Intel Core i7-7820X Skylake-X Review

Reviews
By ,
last updated

Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.

Civilization VI & Battlefield 1

Civilization VI AI Test

Core i9-7900X suffered tremendously during our Civilization VI graphics test, but it clings onto a leading spot in the more CPU-focused AI benchmark. This is surprising considering the metric's preference for quad-core processors.

Even more surprising, Core i7-7820X falls to the bottom of our field. We retested several times with varying parameters, but there is no clear answer to explain the -7820X's lackluster performance. Overclocking helps the -7820X overtake a stock Ryzen 7 1800X, but it embarrassingly trails the tuned six-core Ryzen 5 1600X. 

Civilization VI Graphics Test

Image 1 of 6

Core i7-7820X joins Core i9-7900X at the bottom of this chart, while the 8-core Broadwell-E-based -6900K takes pole position. The Ryzen models are very competitive; they outperform both Skylake-X processors.

Intel suggested to us that some programs might require optimizations to accommodate its new mesh topology. Civilization VI appears to be among them.  

Battlefield 1 (DX11)

Image 1 of 6

The Core i7-7820X shows up ahead of Core i7-6900K on our chart, though the difference is tiny. Although Ryzen takes the bottom positions, again, we're talking about a slight loss of average frame rate compared to much more expensive CPUs. Without question, our Battlefield 1 benchmark is mostly graphics-bound.


MORE: Best CPUs


MORE: Intel & AMD Processor Hierarchy


MORE: All CPUs Content

See more CPUs Reviews
Paul Alcorn
Paul Alcorn
Managing Editor: News and Emerging Tech

Paul Alcorn is the Managing Editor: News and Emerging Tech for Tom's Hardware US. He also writes news and reviews on CPUs, storage, and enterprise hardware.

57 Comments Comment from the forums
  • cknobman
    Just want to say the Ryzen 7 1800x isnt $500 anymore and has not been for weeks now.

    The processor is selling for $420 or less. Heck I bought mine yesterday from Fry's for $393
    Reply
  • artk2219
    19984543 said:
    Just want to say the Ryzen 7 1800x isnt $500 anymore and has not been for weeks now.

    The processor is selling for $420 or less. Heck I bought mine yesterday from Fry's for $393

    Not to mention the fact that you can find the 1700 for even less, and more than likely be able to bump the clocks to atleast match the 1800x. Microcenter was selling them for 269.99 last week.
    Reply
  • Ne0Wolf7
    At least they've done something, but it still too expensive to sway me.
    Perhaps full blown profesionals who need something a bit better than what Ryzen has right now but can go for an i9 would appreciate this, but even hen he/she/it would probably wait to see what threadripper had to offer.
    Reply
  • Scorpionking20
    So many years past, I can't wrap my head around this. Competition in the CPU space? WTH is this?
    Reply
  • Houston_83
    I think the article has some incorrect information on the first page.

    "However, you do have to tolerate a "mere" 28 lanes of PCIe 3.0. Last generation, Core i7-6850K in roughly the same price range gave you 40 lanes, so we consider the drop to 28 a regression. Granted, AMD only exposes 16 lanes with Ryzen 7, so Intel does end the PCIe comparison ahead."

    Doesn't Ryzen have 24 lanes? Still under intel but I'm pretty sure there's more than 16 lanes.
    Reply
  • artk2219
    19984718 said:
    I think the article has some incorrect information on the first page.

    "However, you do have to tolerate a "mere" 28 lanes of PCIe 3.0. Last generation, Core i7-6850K in roughly the same price range gave you 40 lanes, so we consider the drop to 28 a regression. Granted, AMD only exposes 16 lanes with Ryzen 7, so Intel does end the PCIe comparison ahead."

    Doesn't Ryzen have 24 lanes? Still under intel but I'm pretty sure there's more than 16 lanes.

    Ryzen does have 24 lanes, but only 16 are usable, 8 are dedicated to chipset and storage needs.
    Reply
  • JimmiG
    19984740 said:
    19984718 said:
    I think the article has some incorrect information on the first page.

    "However, you do have to tolerate a "mere" 28 lanes of PCIe 3.0. Last generation, Core i7-6850K in roughly the same price range gave you 40 lanes, so we consider the drop to 28 a regression. Granted, AMD only exposes 16 lanes with Ryzen 7, so Intel does end the PCIe comparison ahead."

    Doesn't Ryzen have 24 lanes? Still under intel but I'm pretty sure there's more than 16 lanes.

    It does, but only 16 are usable, 8 are used for chipset and storage needs.

    16X are available for graphics as 1x16 or 2x8.
    4X dedicated for M.2
    4X for the chipset that's split into 8x PCI-E v2 by the X370 and allocated dynamically IIRC
    Reply
  • Zifm0nster
    Would love to give this a chip a spin.... but availability has been zero.... even a month after release.

    I actually do have work application which can utilize the multi-core.
    Reply
  • Math Geek
    does look like intel was caught off guard by amd this time around.

    will take em a couple quarters to figure out what to do. but i'm loving the price/performance amd has brought to the table and know intel will have no choice but to cut prices.

    this is always good for the buyers :D
    Reply
  • Amdlova
    Why we have overclocked cpus ons bench but dont have power compsumation! this review is biased to intel again !? are tomshardware fake news ?
    Reply