Picking a processor is one of the tougher choices you’ll make when buying a new desktop PC or laptop. Even if you’ve already ruled out AMD, deciding which is the best Intel processor for you isn’t an easy task.
Intel makes a lot of CPUs. There are various models – not just for desktops and laptops, but different styles within these categories too. Here, we’ll break down the differences between Core i3 and Core i9, and look at what the jumble of numbers and letters in an Intel CPU name actually mean.
And with Intel’s new 9th Gen CPUs recently released, it’s even tougher to find your ideal processor. The Intel Core i9-9900K, for example, might be an absolute powerhouse for creative tasks, but it’s not necessarily the best Intel processor to buy for gamers.
A new wave of processors are on their way too with Intel’s 10th Generation CPUs, code-named Ice Lake, officially unveiled at Computex 2019. Ice Lake CPUs are shipping right now, while laptops housing the chips are expected to arrive by Christmas.
Still confused? To help, we’ve created this guide to help you find the very best Intel processor to satisfy your needs.
Related: Intel Ice Lake: 10th Generation Intel Core Processor
Best Intel processor: Breaking down the Intel code
Unless you want to shop for a refurbished or end-of-line bargain, first make sure you look at a 8th, 9th or upcoming 10th Gen CPU model.
You can tell if a CPU belongs in this family by looking at the number directly after the ‘i3’, ‘i5’, ‘i7’ or ‘i9’ in the processor name. An Intel Core i9-9900K is a 9th-generation CPU. An i7-8550U is an 8th-generation chipset and the i7-7500U is from the 7th.
While the 9th generation processors currently offer the best performance (soon to be displaced by 10th generation), we’d currently suggest opting for an 8th-gen model instead given their more affordable prices. Buy any CPU older than that, however, and you’ll see a substantial dip in performance.
The letter at the end of a CPU’s name is the second most important part of the Intel code to note. In desktop CPUs, you’ll see either no letter at all, or a ‘K’.
Need to stick to a tight budget, or making a PC for basic tasks? You’ll be fine with an Intel CPU without a letter. These are standard consumer-grade processors.
K-series CPUs are ‘unlocked’. This means you can overclock them more freely, increasing how hard they work to improve performance.
These processors are for enthusiasts who put extra thought into the cooling system in their PC. Overclocking increases the level of heat a CPU creates, and can cause issues with a stock cooler. You can buy ‘standard’ and ‘unlocked’ versions of the Core i3, i5 and i7 processors.
Dig a little deeper and you’ll find CPUs with ‘X’, ‘T’ and ‘B’ letters too. T and B CPUs have extra features for business use. And X-series processors are part of the 7th generation. They remain the fastest processors around, but are far too expensive for most budgets.
The 18-core Intel i9-7980XE costs £1800, for example. You can make a very high-end computer for this price.
Related: Best desktop PCs
Best Intel processor: Laptop CPUs explained
The lineup of Intel laptop processors is fairly simple these days. If you’re after a system you can carry around and will last a good while off a charge, you’ll want a processor that ends in a ‘U’. These are ultra-low voltage processors made for high power efficiency.
‘H’-series processors are used in the highest-performance laptops. They consume more power and will therefore offer shorter battery life, but performance will be better.
Right at the top of the laptop lineup sits an ‘HK’ CPU, the i9-8950HK. Just like K-series desktop processors, this one is unlocked to allow for greater overclocking.
In one of the most exciting updates in Intel laptop CPUs for some time, there are now also ‘G’ processors. These incorporate Radeon RX Vega M graphics processors that often deliver PlayStation 4-beating gaming performance in a portable laptop.
If you want a desktop and you don’t plan to overclock it, buy a standard Intel CPU without a letter on the end of its name. Long-lasting laptops use U-series processors. And if you want a gaming PC that isn’t big or heavy, look for a model such as the HP Spectre X360 with a G-series chipset.
The Whiskey Lake and Amber Lake-based CPUs bring some new changes to the table, namely support for gigabit Wi-Fi, faster video rendering, integrated LTE and a number of efficiency gains which all add up to better power management and improved performance over all. That said, all of the Whiskey Lake CPUs bear the U-series suffix, while the Amber Lake CPUs are all Y-series models.
Following Intel’s reveal at Computex though, we will also be seeing Intel 10th Generation processors being integrated into laptops towards the end of 2019. Not only will these CPUs see an improvement to the processing performance, but will also see a boost to the integrated graphics. Plus the CPU will enable support for Thunderbolt 3 and Wi-Fi 6.
Further down the line, we expect the new Dell XPS Ice Lake laptop to make some serious waves, as it promises to be the first laptop to feature a CPU based on a 10nm manufacturing process.
Intel Dual-core Processor E5200
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Best Intel processor: Core i3 vs i5 vs i7 vs i9 in a desktop
Now that we’ve explained some of the more confusing bits of Intel’s naming conventions, let’s look at which model you should opt for: Core i3, i5, i7 or i9?
As you’d expect, performance increases as you upgrade through the ranks from a Core i3 to a Core i9. But we need to break it down further.
Intel Core i3 desktop processors have four cores. They offer excellent performance for their cost, but they lack support for two core technologies found in higher-end CPUs. These are Hyper-Threading and Turbo Boost.
Hyper-Threading creates virtual cores to operate in a way that a processor with more cores would operate. Turbo Boost dramatically increases the clock speed when more power is needed.
Intel Core i5 desktop CPUs have six cores. Like Core i3 models, they don’t offer Hyper-Threading, but they do have Turbo Boost.
Core i7 processors have both Turbo Boost and Hyper-Threading. They may have six cores like an Intel Core i5, but can operate as if they have 12 cores.
Intel Core i9 CPUs, meanwhile, offer eight cores. The i9 is the most powerful option of the Intel Core ranges, so would be the processor to plump for if you’re not shy spending money.
Related: Best graphics cards
So, which do you need – Turbo Boost or Hyper-Threading? Turbo Boost is useful for most people as it increases the maximum performance of a processor.
Hyper-Threading would prove most useful for heavy multi-taskers and those who use applications such as video editor Adobe Premiere Pro or 3D rendering software. It’s less useful for games or simple applications, which don’t exploit a huge number of cores.
However, this doesn’t mean there’s no benefit to be had from a higher-end CPU if you don’t use such demanding software. Higher-end processors also have higher clock speeds, meaning each of the cores is more powerful, and has a larger CPU cache. This is used to store data handled by the CPU. The larger the cache, the smoother it will operate.
A Core i3 CPU has 6MB, a Core i5 9MB and a Core i7 has 12MB. This a reminder that there’s more to a CPU’s performance than just clock speed, and the number of cores it features.
Here’s a run-down of the main models to consider:
Intel Core i3-8100
Don’t turn your nose up at the Core i3 too quickly. It’s a fantastic sub-£100 brain for an everyday PC or low-cost gaming setup. You can use a relatively high-end graphics card, such as an Nvidia GTX 1070 with this CPU, without much bottlenecking.
Intel Core i5-8400
This is the best Intel processor to buy for the majority of people. It’s a powerful 4-core CPU offering great general performance, and it has enough power to pair with the most expensive consumer graphics cards around. For around £10 more, you can upgrade to the i5-8500, which has a slightly higher clock speed. But the performance difference is minor.
Intel Core i5-8600K
If you want to be able to overclock your CPU significantly, but don’t want to spend thousands on a setup, check out the Intel Core i5-8600K. The price is reasonable, and it’s roughly 15% more powerful than the i5-5400 – even before you start overclocking.
Intel Core i7-8700K
Let’s get serious. The Intel Core i7-8700K has six cores with 12 threads, a 4.7GHz turbo mode and 3.7GHz standard clock speed. While single-core speeds are only a tiny bit better than those of the i5-8500K, its two additional cores result in a more than 40% boost to multi-core performance.
Best Intel processor: 9th Gen Intel Core CPUs
The 9th Generation Intel Core processors look to be the best buy right now, even though the 10th Generation chips will be out shortyl. Note though, that we’ve only been able to test the Intel Core i9-9900K so far, so we can’t comment on which is the best processor for you just yet.
Intel Core i9-9900K
Look at the spec sheet, and the i9-9900K seems to be a powerful beast – eight cores and 16 threads are not to be messed with. Benchmark tests testify that this is one of the very best consumer processors for creative tasks. But if you’re priority is gaming, you’ll find better value with the Intel Core i7-8700K.
Intel Core i7-9700K
Potentially being the perfect middle-ground of the 9th Gen Intel Core processors, the i7 boasts eight cores and eight threads at a more affordable price than the i9. Again, we’re yet to put this CPU through our testing, so we’re currently unable to comment on performance.
Intel Core i5-9600K
Six cores and six threads seems rather measly compared to the 9th Gen i9, but Intel promises that it still offers a competitive performance. We haven’t actually been able to review the Intel Core i5-9600K yet, but we’ll make sure to update this section as soon as we get our hands on it.
Related: Best laptops
Best Intel processor: Core i3 vs i5 vs i7 vs i9 in a laptop
The situation in laptops is a little different. First, relatively few laptops use Core i3 processors compared to Core i5 and i7, while Intel has confirmed there’s no immediate plans for an Core i9 processor for 10th Generation Intel Core CPUs.
Secondly, unlike the desktop version of the Core i3’s, which are all quad-core CPUs, laptop Core i3’s are dual-core processors which feature both Hyper-Threading and Turbo Boost. Where are all the Core i3 laptops? This ‘entry-level’ processor hasn’t been around for as long as its Core i5 and i7 siblings, and often isn’t deemed low-end enough to fit into truly affordable laptops.
Manufacturers often use AMD and Intel Pentium CPUs in their low-cost models instead. Marathi movies 2018 download hd. The Intel Core i5-8250U and i7-8550U are very popular, however.
If you want the fastest possible laptops right now though, then you should be looking for an Intel Core 9th Generation processor, although keep in mind 10th Generation CPUs will be arriving in laptops very soon.
Related: Best MacBook
Best Intel processor: Real-world performance and gaming
If you do a lot of video editing or 3D rendering, then the greater the CPU power, the better. However, there are more important considerations if you want a productivity PC or a system for games.
An Intel Core i3 has enough power to run Windows 10 well, but you need an SSD rather than a hard drive for slick performance.
The G-series laptop CPUs are also the only models with good gaming abilities baked in. An Intel Core i5-8305G will let you play The Witcher 3 at High graphics settings, 1080p resolution, at around 50fps.
All other Intel CPUs use a version of the UHD 630 graphics chipset. It will play The Witcher 3 at Low graphics settings, 720p, at around 23fps – which isn’t great.
No Intel desktop CPU is any good for gaming on its own. And if you want to find the right processor to put at the heart of a gaming rig, we’d recommend spending more on the GPU and less on the CPU if the budget is tight.
For example, a Core i3-8100 CPU with an Nvidia GTX 1080 will provide better frame rates than a Core i7-8700 CPU with Nvidia GTX 1060 GPU. That said, we do recommend treating the Core i5-8400 as an absolute minimum, if you want a CPU to be paired with a very high-end GPU.
With certain games, a lower-end CPU will act as a bottleneck. This is particularly true of games such as Civilization 6 and Total War: Warhammer 2, as a result of all the background calculations involved. Most glossy action adventure games are a lot more GPU-led, and will run fine with a Core i3.
Related: Best PC games
Best Intel processor: Want to get a little deeper?
Primer: what is clock speed? The GHz figure represents the number of clock cycles (calculations) a processor can manage in a second. Put simply, a bigger number means a faster processor.
For example, 3.6GHz means 3,600,000,000 clock cycles. This figure shouldn’t be used to compare processors from different families, generations or manufacturers, however. Bigger isn’t better when comparing AMD and Intel, or 2nd-gen to 9th-gen Intel processors. Different processor families have different levels of efficiency, so how much they get done with each clock cycle is more important than the GHz number itself.
Turbo Boost dynamically increases the clock speed of Core i5 and i7 processors when more power is required. This means the chip can draw less power, produce less heat (most of the time) and only boost when it needs to.
Turbo Boost means you can’t just look at standard clock speed. For example, although a Core i3-8100 runs at 3.6GHz compared with 1.6GHz for the Core i5-7600, the i5 chip can boost up to 3.6GHz when required, so will end up being quicker since it also has more cores.
The more a processor boosts its clock speed, the more heat it will produce. As such, the processors can only Turbo Boost for a limited time, while they remain within a certain temperature range. During long periods of heavy processor activity using all a processor’s cores – such as video encoding – a chip may not Turbo Boost much at all, since it might be too hot to do so safely.
Turbo Boost is a significant part of the reason Core i5 and Core i7 processors outperform Core i3 models in single-core-optimised tasks, even though they have lower base clock speeds.
Why we’re different
Intel creates dozens of models of processors for use in a wide variety of computer systems. The processors vary greatly in power, size and age, though they conform to a few basic categories. Pentium and Core are designations for different processor families, and both see use in current products. The processor model names give some indication of the devices' power, but the designations 'Pentium' and 'Core' by themselves don't tell you much about a specific computer.
Pentium History
Intel debuted the original Pentium processor in 1993, and the device bears little similarity to the ever-more-powerful processors that would follow. The successive Pentium Pro, Pentium 2, Pentium 3 and Pentium 4 processors were among the most popular processors of the 1990s, with competition from AMD devices. Other processors using the Pentium name included the Pentium D, Pentium M and newer Pentium Dual-Core families. The processors have seen use in desktop as well as laptop machines.
Core History
Intel introduced the Core brand in 2006 as a replacement for the Pentium M line of processors, and the initial devices shared much of the same technology with the current Pentium-branded offerings. Followups to the original include the Core Solo, Core Duo, Core 2 Quad, Core i3, Core i5 and Core i7 processor families. Starting with the Core 2, Core products were available for both laptop and desktop computers.
Differences
Though both Pentium and Core devices have seen major changes in available power, Intel generally equips the Core brand with more powerful processors than the equivalent Pentium or Celeron devices, though they often use the same basic processor technology. Newer Core models feature additional unique software such as Intel's Turbo Boost and HyperThreading options for extra configuration. Core processors come pre-installed in many newer Apple computers, while Pentium devices see use only in Windows-based machines.
Analysis
When you're trying to determine the usefulness of a Pentium processor compared to a Core processor, the technical specifications of the device will prove of more use than the branding. Determine the processor's specific clock speeds, bus speed and memory availability. Also note that many Intel processors are created specifically for either a desktop or a mobile PC, though they may share brand names with other incompatible devices, as is the case with the Core 2 Duo T8100 for notebooks and the Core 2 Duo E8500 for desktop use.
References
About the Author
Andrew Mikael began writing in 2010. His articles appear on various websites, where he specializes in media and related technology. Mikael has a Bachelor of Arts in film from Montana State University.
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Barely wrapped your brain around dual-core processors? It only gets worse from here, folks. Welcome to quad core, by way of Intel's Core 2 Extreme QX6700. Don't let the 'Core 2' fool you (great job, Intel Product Naming department), this new chip has four physical processing cores in it that make it a multitasking beast. And if you're still stuck doing only one thing at a time on your desktop, the QX6700's promise for single-application performance is large, as well. We suspect that professionals and forward-looking gamers will be most interested in quad-core chips, and of the pros, the digital-media editors might not want to get rid of their Mac Pro's just yet. We found that with certain applications, Apple's high-end designer box is faster. At $999, the Core 2 Extreme QX6700 will likely end up in only the most expensive of desktops, but the fact is that the multicore revolution is fully upon us. You might not need a PC with such a pricey chip now, but our testing found that for applications and scenarios that will put it to the test, Intel's new quad-core chip will give you an absolute boost in performance.
We spared you the gory chip architecture details in our review of Intel's Core 2 Extreme X6800, and we're going to do the same here. The big news is doubling the number of cores to four; the rest of the chip architecture remains the same for the most part. If you must know all the ins and outs, we will refer you to our Alpha blog post that breaks down the bullet points. The key specs of the Core 2 Extreme QX6700 are its 2.66GHz-per-core clock speed, and its two separate 4MB L2 cache allotments--giving each pair of cores a 4MB pool to draw upon. That's, logically, twice as much cache as the dual-core Extreme X6800 chip. But if you've been paying attention to recent CPU developments, you might remember that the X6800 actually has a faster clock speed, coming in at 2.93GHz. Here's where multicore CPUs start to complicate our understanding of desktop processors.
If you'll recall, both Intel and AMD have been laying the groundwork to get people away from thinking of raw megahertz as the primary indicator of processor capability. The reason in a word is heat: The faster a chip runs, the hotter it becomes. When those Pentium Extreme Edition chips started hitting 3.6GHz and higher, the cumbersome liquid-cooling hardware required to keep them from overheating became a visible, noisy reminder that heat dissipation is a major challenge for system builders. Both AMD and Intel knew this before the Extreme Edition chips came to market, of course, but with the quad-core Core 2 Extreme QX6700, the answer to the problem becomes much easier to understand than even with dual-core CPUs; rather than make the chips faster, Intel has made them able to do more things at once.
Thus, we have four processing cores, each running at 2.66GHz. You have to be able to tap into all of the cores to see a difference in performance, which is why dual-core and multicore CPUs really shine on multitasking tests. So when would you ever be doing so many things at once on a computer? What about if you wanted to burn a DVD, listen to music, and edit a photo all at the same time? Another scenario we like is playing a game on your PC while someone in another room is using that same computer to stream digital media across your home network. If you tried doing those things with a fast, single-core CPU, you'd have to trade off CPU cycles, and your performance would suffer. But with a quad-core chip, in which each core is almost as fast as one single-core processor, suddenly your options increase.
So that's multitasking. What about when you're doing just one thing at a time? That's where multithreaded applications come in. When a program can tap into multiple cores on a single CPU, it's called a multithreaded application. Games are actually a great example of how multithreaded software can benefit. It's easy to understand that when you're playing a game, the graphics processing goes out to the 3D chip and the sound effects go through an audio chip, but what about artificial intelligence? Or physics calculations? Or dynamic scenery generation that creates new environments on the fly? Now what about doing all of those things at once? That's where a multicore chip can give you a benefit. The same goes for any application that involves running more than one process--applying multiple photo filters, encoding audio and video onto a DVD, the list goes on. Many popular applications such as Photoshop and iTunes already support multiple processing threads. You can also expect that more and more programs will ship with multithreaded code.
If you're wondering what kind of performance increase you can expect from the Core 2 Extreme QX6700, we saw dramatic speed increases with multitasking and multithreaded applications compared to Intel's Core 2 Duo Extreme X6800 and AMD's AMD Athlon 64 FX-62--the fastest dual-core chips Intel and AMD had to offer, respectively. Apple's Mac Pro, however, presents a different story. Our Apple test bed (a different system than the one we reviewed back in August) has two dual-core Xeon 5160 chips, each running at 3.0GHz. That makes its raw CPU speed faster than that of the Core 2 Extreme QX6700. On some of our apps--iTunes and Photoshop in particular--differences between running the programs on Windows XP and Apple OS X likely impact performance, but it's worth noting that even with a slower hard drive, the Mac Pro outpaced the Core 2 Extreme QX6700 chip on a number of tests, likely due to its clock speed advantage.
It seems to us that the performance takeaway is that for Windows users who can afford it, the Core 2 Extreme QX6700 is the way to go for the fastest PC today. As our single-core CineBench scores show, you might run into some apps that benefit more from raw clock speed than having multiple cores, but in general, we haven't seen a faster desktop chip. But professionals who have the luxury to choose among platforms are probably better off sticking with a Mac Pro, all other things being equal. We imagine that due to its partnership with Intel, Apple will be updating the CPUs in its high-end desktop in the near future, so it's not hard to fathom a Mac Pro with a single quad-core chip or perhaps two quad-core chips, so just because the current two dual-core Xeon design isn't quite a true 'quad-core CPU,' Mac loyalists shouldn't feel like they're limiting themselves.
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Intel Dual Core Processors List
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CineBench 9.5
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Rendering Multiple CPUs | Rendering Single CPU |
Quake 4 CPU-limited performance test (in fps)
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But say you wanted to build your own quad-core PC. You won't be able to purchase the Core 2 Extreme QX6700 until November 14, and on that date, you'll also have to decide between building one on your own and buying one from Dell, Gateway, Velocity Micro, or any of the other typically high-end PC vendors. If you do go it alone, you'll need an Intel 975XBX2-based motherboard. As the company did with the original Core 2 Duo chips, we expect that Nvidia will have a compatible motherboard chipset for sale as well, but as of November 1, it hadn't announced anything. Neither Intel's nor Nvidia's previous Core 2 Duo-supporting chipsets are compatible with the Core 2 Extreme QX6700, so if you recently purchased such a motherboard, you'll need to upgrade. Memory support officially includes 533MHz and 667MHz DDR2 SDRAM, with unofficial support for faster 800MHz DDR2 RAM.
SAN FRANCISCO—Dual core processors are in. Intel is shifting most of its focus in the processor market to dual core CPUs, suggesting that by the end of 2006, better than 75% of the CPUs Intel ships will be multicore processors.
We sat in on a dual-core architecture session at IDF, presented by Intel’s Benson Inkley. Inkley covered the fundamental concepts of how Intel will be building dual core CPUs.
Dual core CPUs from Intel will ship in two primary classes. The first class will ship with two execution cores on a single semiconductor die. The first iteration of this is the Pentium D (“Smithfield”), which will be built on the company’s 90nm process, similar to that being used for the current Pentium 4 600 CPUs. Each core will have an independent interface to the frontside bus.
Further down the road will be a product code-named MP Paxville—two cores sharing one bus interface. Paxville shares a single bus, and represents an update to the architecture. Paxville is a server CPU, and will need the Intel 8500 chipset. The 8500 supports up to 4 Paxville processors (8 cores total). Two processors share one of the two processor buses built into the chipset.
Pentium D replicates the P4 pipeline almost completely, in a single, 230M transistor die. Note that the Pentium D will require a new motherboard, built around the upcoming 945/955 core logic. If you insert a Pentium D into a current 915 or 925XE motherboard, the system simply won’t boot—neither the CPU or motherboard will be damaged. It simply won’t work. Note that the current LGA775 CPUs will work in 945/955 chipset boards.
The Pentium D and Pentium 4 Extreme Edition 840 will max out at 3.2GHz. Each CPU offers 2MB of L2 cache, with each core being allocated 1MB exclusively. The front-side bus clock is 200MHz (800MHz effective), rather than the faster 266MHz FSB with the current P4EE.
The key difference between the Pentium D and the dual core Pentium 4 Extreme Edition 840 is Hyper-Threading. The Pentium D will have two cores, but each core only supports a single thread at a time. The Extreme Edition supports Hyper-Threading (simultaneous multitasking). So the dual core P4EE will support four threads simultaneously.
One key aspect of dual core CPUs: They behave just like dual-processor systems, but take up a single socket. So software must be written to take advantage of multiple cores. The good news is that applications that have been written to take advantage of Hyper-Threading on the Pentium 4 are already architected to take advantage of dual core CPUs.
Power dissipation is more complex than with single core CPUs. The operating system assigns the load to the processor, so predicting the load on the CPU is problematic. Thermal diodes built onto the die track the temperature in real time. The Pentium D and dual core P4EE use an enhanced power management capability, similar to what’s built into the
This includes dynamic voltage identification (VID). The processor can vary frequency and voltage on the fly, as determined by the workload on the CPU and the thermal environment. This happens in the hardware, with no intervention or knowledge by the OS. No drivers are needed to take advantage of VID. This feature is built into 600 series and Smithfield CPUs with native multipliers greater than 14 (faster than 2.8GHz).
Note that dual core CPUs have to communicate with each other when deciding on power management states. The voltage reduction in the case of the Pentium D only occurs when both cores are ready for the voltage drop. The Pentium D supports the C1E enhanced halt state. This can happen thousands of times per second—even between keystrokes—to maximize thermal management.
Performance Potential
What about performance? Given power dissipation issues, the initial dual core CPUs from Intel will ship with a maximum clock rate of 3.2GHz, whereas the current P4EE clocks at 3.73GHz. It all depends on the application mix. Applications which are designed for multithreading will generally run faster on the dual core CPU. In addition, a system with a significant multitasking load may be more responsive.
In the end, multicore CPUs are better suited for today’s multitasking environments. Windows XP often has as many as 500 threads running, ranging from system services to device drivers to end user applications. So CPUs with multiple cores will likely increase the responsiveness of systems and, in certain cases, raw performance. Accurately measuring performance in these systems will be a major challenge, however.