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Intel Core i7-7820X


Introduction, Chip Background CPU Testing

If you’re in a marketplace for a new desktop CPU, you’re definitely not pang for choice here in 2017.

We started off a year with a launch of Intel’s 7th Generation “Kaby Lake” Core i7-7700KRyzen 7 1800XCore X-Series on a Intel side, and AMD’s competing Ryzen Threadripper chips on Team Red’s side of a exam bench. 

So many has been going on in a area of CPUs this year that it’s unequivocally over a range of this review. You can get a decent clarity of where we’re during from checking a new reviews of a Intel Core i9-7900XAMD Ryzen Threadripper 1920Xour Components page, click a “Reviews” symbol in a tip navigation bar, and slick by a 16 processors we’ve tested and reviewed so distant this year. (Go ahead. We’ll wait.)

Intel Core i7-7820X (Press Hero Shot)

Welcome back! Now that you’re all held up, we’re certain you’re during slightest as eager as we are to demeanour during a Intel Core i7-7820X and see where it fits in.


Intel Core i5-7640X, right adult to a (still not strictly launched) 18-core Intel Core i9-7980XE. The indication we’re looking during here has a 3.6GHz bottom time and a ability for dual cores to ramp as high as 4.5GHz regulating Intel’s Turbo Boost Max 3.0 feature. The Boost speed is significant, as it’s a aloft batch time speed than any other Core X-Series chip, save for a Core i7-7900X, one step adult a stack, that can also strike 4.5GHz.

Currently, 9 chips make adult a Core X-Series lineup, travelling opposite dual pattern generations: 6th Generation Core (dubbed “Skylake X” in their iterations here) and 7th Generation Core (“Kaby Lake X”). Rather than clap off a full list of chips and their simple specs, here’s a chart, approach from Intel…

Intel Core i7-7820X (Core X Specs)

The dual 112-watt chips on a bottom are formed on Kaby Lake architecture, while all above a Core i7-7740X is formed on a comparison Skylake silicon. In some ways, that’s not a outrageous deal, given a dual generations are unequivocally similar. The primary disproportion is that a newer Kaby Lake chips have hardware that creates them concordant with stable video-stream calm in 4K/HDR for stream and arriving services from a likes of Netflix, Amazon, and others. The obtuse Kaby Lake X chips also use dual-channel DDR4 memory, while a Skylake X tools support quad-channel setups.

For a record (and in box we didn’t go examination one of a prior Core X-Series reviews for some-more context, tsk tsk), all of these chips use a same LGA 2066 socket, and are concordant usually with a X299 chipset. We aren’t going to fact a chipset, memory, and other considerations here, yet instead indicate we to progressing reviews, quite a 10-core Intel Core i9-7900X, for that.

The vast differentiator between these chips, aside from a numbers of cores and threads, is a series of PCI Express lanes connected to a chip, that is critical for installing bandwidth-hungry components such as graphics cards and PCI Express/NVMe solid-state drives (SSDs). The span of four-core chips in a Core X-Series lineup (the dual Kaby Lake X chips during a bottom of a draft above) have usually 16 lanes, that is a same as what you’ll find on mainstream offerings like a Core i7-7700K. The 5 Core i9 Skylake X chips that have 10 or some-more cores have 44 PCI Express lanes, while a Core X “middle chips” (including a Core i7-7820X we’re looking during here, and a obtuse Core i7-7800X) have 28 lanes accessible from a CPU.

Intel Core X Family Badges

Now, for many users, 28 lanes should more than suffice, including gamers and enthusiasts who competence wish to implement a integrate of high-end graphics cards in an SLI or CrossFireX configuration, and maybe a span of quick PCI Express-based SSDs. Keep in mind, though, that a X299 chipset provides adult to 24 lanes of a possess for storage, USB ports, and other bandwidth-hungry features. AMD’s competing Ryzen Threadripper platform, however, delivers 64 lanes of PCIe on all of a processors, including a recently announced, lower-end ($549) Threadripper 1900X eight-core.

We’re overtly not certain how all yet a most extreme (and a wealthiest) of users could indeed make use of all those lanes. But if we have your reasons, we competence wish to go a AMD route. Just know that Threadripper motherboards (which run on a new X399 chipset) are positively expensive, starting during $340 when we wrote this. Comparable Core X-Series motherboards (running a X299 chipset) start during a partially “inexpensive” $210.

Really, though, if a discount is what you’re after, and we don’t need some-more than 8 cores and 20 accessible PCI Express lanes from a CPU, a Ryzen 7 1800X is going to be tough to beat. That chip sells for about $429 (and we’ve seen it as low as $399 around some in-store sell specials), with decent, concordant B350 motherboards including an M.2 connector for rapid storage and some LED bling, offered for as small as $69 when we wrote this.

In contrast, a also-eight-core Core i7-7820X we’re looking during here sells for about $599. (BH had it on sale for $586 when we were jacket adult this review.) Paired with an entry-level X299 motherboard, you’re looking during about $800 for a chip-plus-motherboard for a eight-core Intel option, contra as small as $500 for a eight-core AMD option.

Intel Core X Chip Flat

As we’re about to see in testing, a Intel Core i7-7820X performs improved than a AMD Ryzen 7 1800X overall. But does it perform enough better to aver as many as a 60 percent boost in cost for a house and processor combined? And how does Ryzen Threadripper and a 12-core, $799 Threadripper 1920X smoke-stack adult opposite these dual options? For that, we’ll have to excavate into contrast and take a tighten demeanour during performance. So let’s do usually that.



CPU-Specific Performance Testing

For a exam setup, we forsaken a Core i7-7820X into the Asus Prime X299-Deluxe motherboard of a Core X-Series testbed PC, along with 32GB of Corsair memory regulating in a quad-channel setup. An Nvidia GeForce GTX 1080 Founders EditionKingston HyperX Savage was a SATA-interface foot drive. We stranded all those components into Deepcool’s GamerStorm Genome ROG Certified case, that includes a self-contained glass cooler with a vast three-fan radiator.

The Core i7-7820X sits between mainstream chips such as a four-core Core i7-7700KRyzen 7 1800XAMD Ryzen Threadripper 1920X and a 10-core Intel Core i9-7900XAMD Ryzen Threadripper 1950XIntel Core i7-6950X Extreme EditionIntel Core i7-6900K. The final dual were famous as “Broadwell X” in their day.

Also, those final dual chips should show how distant we’ve come from a price-to-performance standpoint in a final year or so—at slightest when it comes to tasks that like lots of cores and threads. But we think a Core i7-7820X’s arch foe will come from AMD’s Ryzen 7 1800X, that was offered for as low as $429 when we wrote this. The Threadripper 1920X will approaching surpass a Core i7-7820X, interjection to a 12 cores. But it also sells for for $799, or a small less. And AMD’s Threadripper motherboards are some-more costly than many allied Intel X299 options, so that creates a Threadripper chip in outcome some-more costly to deploy.


Cinebench R15

First adult in a contrast regimen: Maxon’s CPU-crunching Cinebench R15 test, that is entirely threaded to make use of all accessible processor cores and threads, regulating a CPU rather than a GPU to describe a formidable image. The outcome is a exclusive measure indicating a PC’s bearing for processor-intensive workloads.

Along with a common exam that creates use of all accessible cores, we’ve combined a single-core formula here to get a clarity of how Intel’s eight-core chip fares in easily threaded workloads.

Intel Core i7-7820X (Cinebench)

As we expected, a Core i7-7820X did improved here than a Ryzen 7 1800X, yet a cove between a dual isn’t as good as we competence pattern given a $170 cost disproportion between a dual CPUs alone. Keep in mind, again, that we can collect adult B350 motherboards (with lighting and an M.2 connector) as low as $70, or about a third a cost you’ll compensate for an entry-level X299-based house for a Intel chip. That said, a Intel Core i7-7820X is a faster performer, pulling 19 percent forward of a 1800X on a single-core exam here, and about 8 percent forward in a multi-core test.

The Threadripper 1920X did roughly 40 percent improved than a Core i7-7820X on a multi-core test, yet it’s also a some-more costly processor that runs on a pricier platform.


iTunes 10.6 Conversion Test

We afterwards switched over to a princely iTunes Encoding Test, regulating chronicle 10.6 of iTunes. This exam taxes usually a singular CPU core, as many bequest module still does.

Intel Core i7-7820X (iTunes)

Music encoding doesn’t accurately pull a complicated CPU to a limits, and positively not ones like these. But this is precisely a kind of exam that shows Intel’s chips to their best advantage. Intel’s new Skylake and Kaby Lake architectures do improved than AMD’s Zen on single-thread or easily threaded tasks. That said, unless you’re unresolved on to some unequivocally aged programs, many module that can take good advantage of mixed cores and threads has been updated to do so during this point. 

The Core i7-7820X managed to do improved here than any other consumer chip we’ve tested, if usually by a second or two. The many reduction costly Intel Core i7-7740X (not charted here) finished this same exam usually a second behind a Core i7-7820X. So while a Core i7-7820X excels during easily threaded workloads, quite opposite AMD’s offerings, it doesn’t unequivocally offer a new turn of performance. The Core i7-7700K, that debuted in Jan 2017, also performs about as good on this front, for a lot less.


Handbrake 0.9.9

This is a time-consuming exam of video-crunching capabilities. Handbrake, a apparatus ordinarily used for converting videos from one format to another, advantages from carrying lots of cores and threads during your disposal. In this test, we use a nice, vast hunk of 4K video to see how a chips perform with a postulated charge of this kind. We tasked a CPUs to modify a 12-minute-and-14-second 4K .MOV record (the 4K showcase brief film Tears of Steel) into a 1080p MPEG-4 video.

Intel Core i7-7820X (Handrake)

On this initial real-world exam that takes advantage of lots of cores and threads, we again see a Ryzen Threadripper 1920X and 1950X in another league, as we’d expect. And a Ryzen 7 1800X was indeed slower than a Core i7-7820X, yet not almost so. The eight-core AMD partial finished this exam 25 seconds behind a Core i7-7820X.


POV-Ray 3.7

Next up, regulating a “All CPUs” setting, we ran a POV-Ray benchmark, that hurdles all accessible cores to describe a formidable photo-realistic picture regulating ray tracing. After that, again to get a clarity of how a Core i9 handles single-core performance, we ran a same benchmark regulating a “One CPU” setting.

Intel Core i7-7820X (POV-Ray)

Once again here, a Core i7-7820X was a few seconds forward of a Ryzen 7 1800X on a multi-core test, and some-more than dual mins forward on a longer-running single-core test. The Ryzen Threadripper 1920X was likewise behind on a single-core test, yet significantly faster than a Core i7-7820X when all cores and threads were engaged. Given that a Ryzen Threadripper chip has 4 some-more earthy cores, we’d pattern that.


Blender 2.77a

Blender is an open-source 3D content-creation module that can be used to pattern and emanate visible effects, animation, and 3D models for use in video games or 3D printing. We open a customary exam record (it’s of a drifting squirrel) and time how prolonged a exam processor takes to finish a render.

Intel Core i7-7820X (Blender)

The formula here were all sincerely close, with a Core i7-7820X pulling even with a pricier Core i9-7900X chip for a lead. Interestingly, a Ryzen Threadripper 1920X was usually a second behind these two, yet a Ryzen 7 1800X landed during a behind of a pack, 5 seconds behind a closest competitors.


7-Zip File Compression

Last, we dismissed adult a renouned 7-Zip file-compression module and ran a built-in compression/decompression benchmark, that is another useful exam of a CPU’s multi-core abilities.

Intel Core i7-7820X (7-Zip)

This final exam showed a eight-core Core i7-7820X in a best light (at slightest on a core-hungry benchmark), where it eclipsed a Ryzen 7 1800X by some-more than 20 percent. If you’re mostly compressing/decompressing vast record sets, that positively gives a Core i7-7820X an advantage. Then again, if such tasks are that critical to your workflow, a Ryzen Threadripper and a 12 cores outpaced a 7820X by about 24 percent. Again, a Threadripper is a costlier chip on a pricier platform. So you’ll wish to tailor your bill and height choices to your needs and your sold workflow.

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