IntelBX80677I77700
IntelBX80673I97900X

4 Cores, 8 Threads @3.6GHz, Kaby Lake.
Release date: Q1 2017.

10 Cores, 20 Threads @3.8GHz, Skylake-X.
Release date: Q2 2017.

Real World Speed
Performance profile from 276,149 user samples
256,717 User Benchmarks
Best Bench: 84% Base clock 3.6 GHz, turbo 4 GHz (avg)
Worst Bench: 63% Base clock 3.6 GHz, turbo 4 GHz (avg)
Poor: 63% Great: 84%
SPEED RANK: 289th / 1442
Gaming
Gaming 76%
Battleship
Desktop
Desktop 80%
Battleship
Workstation
Workstation 63%
Destroyer
19,432 User Benchmarks
Best Bench: 92% Base clock 3.3 GHz, turbo 4.95 GHz (avg)
Worst Bench: 72% Base clock 3.3 GHz, turbo 0.7 GHz (avg)
Poor: 72% Great: 92%
SPEED RANK: 209th / 1442
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 89%
Aircraft carrier
Effective Speed
Effective CPU Speed
76.2 % 81.9 % Slightly faster effective speed.
+7%
Memory
Avg. Memory Latency
84 Pts Lower memory latency.
+10%
76.1 Pts
1-Core
Avg. Single Core Speed
110 Pts 123 Pts Faster single-core speed.
+12%
2-Core
Avg. Dual Core Speed
208 Pts 243 Pts Faster dual-core speed.
+17%
4-Core
Avg. Quad Core Speed
371 Pts 470 Pts Faster quad-core speed.
+27%
8-Core
Avg. Octa Core Speed
556 Pts 898 Pts Much faster octa-core speed.
+62%
Memory
OC Memory Latency
93.3 Pts Slightly lower OC memory latency.
+7%
87.6 Pts
1-Core
OC Single Core Speed
122 Pts 138 Pts Faster OC single-core speed.
+13%
2-Core
OC Dual Core Speed
237 Pts 276 Pts Faster OC dual-core speed.
+16%
4-Core
OC Quad Core Speed
414 Pts 548 Pts Much faster OC quad-core speed.
+32%
8-Core
OC Octa Core Speed
633 Pts 1069 Pts Much faster OC octa-core speed.
+69%
Market Share
Based on 67,711,986 CPUs tested
Market Share
Market Share (trailing 30 days)
0.71 % Insanely higher market share.
+1,675%
0.04 %
Value
Value For Money
87.7 % Better value.
+23%
71.5 %
User Rating
UBM User Rating
60 % Slightly more popular.
+9%
55 %
Price
Price (score)
$167 Much cheaper.
+63%
$455
Age
Newest
87 Months 81 Months Slightly more recent.
+7%
TDP
Thermal Design Power (TDP)
65 Watts Much more energy efficient.
+54%
140 Watts
Cores
CPU Processing Cores
4 cores 10 cores Hugely higher core count.
+150%
Threads
CPU Processing Threads
8 threads 20 threads Hugely higher thread count.
+150%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.6 GHz 3.8 GHz Slightly faster base frequency.
+6%
Turbo Clock
Turbo Clock Speed
4.2 GHz 4.3 GHz +2%
64-Core
OC Multi Core Speed
640 Pts 1853 Pts Hugely faster OC 64-core speed.
+190%
64-Core
Avg. Multi Core Speed
572 Pts 1589 Pts Hugely faster 64-core speed.
+178%
Series
CPU Architecture
Kaby Lake Skylake-X
Socket
Motherboard Socket
FCLGA1151 LGA2066
Graphics
Integrated Graphics
HD 630 None
Launch Date
Launch Date
Q1'17 Q2'17
Cache
Cache
8 MB 13.75 MB L3
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2, AVX-512
Recommended Price
Recommended Customer Price
$303.00 - $312.00 $989.00 - $999.00
Max Turbo Frequency
Max Turbo Frequency
4.20 GHz 4.30 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (65W) PCG 2017X
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 128 GB
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4-2666
Memory Channels
Max # of Memory Channels
2 4
Max # of PCI Express Lanes
Max # of PCI Express Lanes
16 44

More specs » More specs »
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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]

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Processor Rankings (Price vs Performance) April 2024 CPU Rankings

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. 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]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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Welcome to our 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 value for money upgrades.

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How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
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 Frequently Asked Questions

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