10 Cores, 20 Threads
@3.8GHz Skylake-X (2017)

10 Cores, 20 Threads
@3.0GHz Broadwell-E (2016)

Real World Speed
Performance profile from 4,804 user samples
2,977 User Benchmarks
Best Bench: 125% Base clock 3.3 GHz, turbo 4.85 GHz (avg)
Worst Bench: 99% Base clock 3.3 GHz, turbo 4.1 GHz (avg)
Poor: 99% Great: 125%
SPEED RANK: 5th / 1055
Gaming 112%
Desktop 108%
Workstation 132%
1,827 User Benchmarks
Best Bench: 118% Base clock 3 GHz, turbo 4.5 GHz (avg)
Worst Bench: 88% Base clock 3 GHz, turbo 1.2 GHz (avg)
Poor: 88% Great: 118%
SPEED RANK: 12th / 1055
Gaming 100%
Desktop 96%
Nuclear submarine
Workstation 117%
Effective Speed
Effective CPU Speed
112 % Slightly faster effective speed.
100 %
SC Mixed
Avg. Single Core Mixed Speed
129 Pts Slightly faster single-core speed.
113 Pts
QC Mixed
Avg. Quad Core Mixed Speed
508 Pts Slightly faster quad-core speed.
460 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1684 Pts Slightly faster multi-core speed.
1486 Pts
SC Mixed
OC Single Core Mixed Speed
145 Pts Slightly faster OC single-core speed.
135 Pts
QC Mixed
OC Quad Core Mixed Speed
573 Pts Slightly faster OC quad-core speed.
538 Pts
MC Mixed
OC Multi Core Mixed Speed
1902 Pts Slightly faster OC multi-core speed.
1739 Pts
Market Share
Based on 7,919,492 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.16 % Hugely higher market share.
0.02 %
Value For Money
72.9 % Much better value.
54.4 %
User Rating
UBM User Rating
58 % 67 % More popular.
Price (score)
$922 Much cheaper.
8 Months Much more recent.
21 Months
Thermal Design Power (TDP)
140 Watts 140 Watts
CPU Processing Cores
10 cores 10 cores
CPU Processing Threads
20 threads 20 threads
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.8 GHz Faster base frequency.
3 GHz
Turbo Clock
Turbo Clock Speed
4.3 GHz Slightly faster turbo frequency.
4 GHz
SC Int
Single Core Integer Speed
142 Pts Slightly faster single-core int speed.
128 Pts
SC Float
Single Core Floating Point Speed
147 Pts +4% 142 Pts
QC Int
Quad Core Integer Speed
563 Pts Slightly faster quad-core int speed.
514 Pts
QC Float
Quad Core Floating Point Speed
588 Pts +4% 566 Pts
MC Int
Multi Core Integer Speed
1751 Pts Slightly faster multi-core int speed.
1604 Pts
MC Float
Multi Core Floating Point Speed
2006 Pts Slightly faster multi-core fp speed.
1860 Pts
CPU Architecture
Skylake-X (2017) Broadwell-E (2016)
Motherboard Socket
LGA2066 LGA2011-V3
Integrated Graphics
None None
Launch Date
Launch Date
Q2'17 Q2'16
13.75 MB L3 25 MB
Recommended Price
Recommended Customer Price
$989.00 - $999.00 N/A
Memory Types
Memory Types
DDR4-2666 DDR4 2400/2133
Max # of PCI Express Lanes
Max # of PCI Express Lanes
44 40

More specs » More specs »

Intel’s core i9-7900X, from the Skylake-X series, is Intel’s latest 10-core, 20-thread flagship processor. It's the first to bear the i9 moniker and utilize the new X299 (Basin Falls) chipset/motherboard. The 7900X is the fastest CPU on the market today, however, imminent competition from AMD’s 16-core, 32-thread Ryzen Threadripper CPUs and the forthcoming release of more Intel Core X series mean that its reign will be a short one. The i9-7900X supersedes the 10-core Broadwell-E core i7-6950X that held the crown for little over a year. Both are extremely powerful and pricey high end desktop processors (HEDTs) which excel in multi-threaded tasks such as media encoding. However, despite the same power draw (TDP 140W), the newer i9-7900X betters the i7-6950X in terms of peak overclocked performance by 10% mostly thanks to increased clock speeds from 3.0GHz/4.0GHz to 3.3GHz/4.3GHz for base/turbo. It also betters the i7-6950X on price by around 28%. This all translates to the i9-7900X offering around 20% more value for money, even despite its eye-watering $999 price tag. The more accessible pricing (albeit not accessible for the majority) and hurried release of the i9-7900k to market is widely perceived as a reaction to AMD’s Ryzen Threadripper CPUs, rumoured for release towards the end of July 2017. So if you want to own the fastest consumer CPU in the world, it would be wise to wait for the dust to settle. [Jul '17 CPUPro]


The Core i7-6950X is Intel’s new top of the range prosumer CPU. This flagship model has a whopping ten cores with base and turbo frequencies of 3.0 and 4.0 GHz respectively. The 6950X is based on the 14 nm Broadwell-E architecture. It has a TDP of 140 watts, 40 PCIe 3.0 lanes and no integrated graphics. Because of its ridiculously high MSRP of around $2,000, this CPU only makes sense for very niche use cases which could include top end graphics design or video production workstations. Comparing the 6950X and 6700K shows that for typical desktop use the 6950X only offers a gain of around 20% for a whopping 6 fold price increase. This is because desktop computing largely depends on single core performance and the Skylake i7-6700K is both clocked higher and has higher IPC due to its one generation lead over the 6950X. That said, if you want the most powerful desktop processor money can buy, then the 6950X hits the spot. [Jun '16 CPUPro]


Processor Rankings (Price vs Performance) March 2018 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance and price.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

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