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IntelBX80673I97900X
IntelBX80662I56600K
▲ 55980 ▼

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

VS
▲ 7428,938 ▼

4 Cores, 4 Threads @3.5GHz, Skylake.
Release date: Q3 2015.

Effective Speed 
+13%
Real World Speed
Performance profile from 361,676 user samples
Benchmark your CPU here
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
342,244 User Benchmarks
Best Bench: 85% Base clock 3.5 GHz, turbo 4.7 GHz (avg)
Worst Bench: 57% Base clock 3.5 GHz, turbo 3.55 GHz (avg)
Poor: 57% Great: 85%
SPEED RANK: 355th / 1442
Gaming
Gaming 72%
Battleship
Desktop
Desktop 80%
Battleship
Workstation
Workstation 55%
Yacht
Effective Speed
Effective CPU Speed 		81.9 % Faster effective speed.
+13% 		72.4 %
Average Score 
+38%
Memory
Avg. Memory Latency 		76.1 Pts 83.3 Pts Slightly lower memory latency.
+9%
1-Core
Avg. Single Core Speed 		123 Pts Faster single-core speed.
+12% 		110 Pts
2-Core
Avg. Dual Core Speed 		243 Pts Faster dual-core speed.
+11% 		218 Pts
4-Core
Avg. Quad Core Speed 		470 Pts Much faster quad-core speed.
+34% 		352 Pts
8-Core
Avg. Octa Core Speed 		898 Pts Hugely faster octa-core speed.
+141% 		373 Pts
Overclocked Score 
+28%
Memory
OC Memory Latency 		87.6 Pts 95.2 Pts Slightly lower OC memory latency.
+9%
1-Core
OC Single Core Speed 		138 Pts +1% 136 Pts
2-Core
OC Dual Core Speed 		276 Pts +3% 269 Pts
4-Core
OC Quad Core Speed 		548 Pts Faster OC quad-core speed.
+20% 		455 Pts
8-Core
OC Octa Core Speed 		1069 Pts Hugely faster OC octa-core speed.
+125% 		476 Pts
Value & Sentiment 
+202%
Market Share
Based on 67,713,788 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.06 % 0.45 % Hugely higher market share.
+650%
Value
Value For Money 		71.2 % 102 % Much better value.
+43%
User Rating
UBM User Rating 		55 % 74 % Much more popular.
+35%
Price
Price (score) 		$462 $81 Hugely cheaper.
+82%
Nice To Haves 
+129%
Age
Newest 		81 Months More recent.
+22% 		104 Months
TDP
Thermal Design Power (TDP) 		140 Watts 91 Watts Much more energy efficient.
+35%
Cores
CPU Processing Cores 		10 cores Hugely higher core count.
+150% 		4 cores
Threads
CPU Processing Threads 		20 threads Hugely higher thread count.
+400% 		4 threads
Lithography
Manufacturing process 		14 nm 14 nm
Base Clock
Base Clock Speed 		3.8 GHz Slightly faster base frequency.
+9% 		3.5 GHz
Turbo Clock
Turbo Clock Speed 		4.3 GHz Faster turbo frequency.
+10% 		3.9 GHz
64-Core
OC Multi Core Speed 		1853 Pts Hugely faster OC 64-core speed.
+283% 		484 Pts
64-Core
Avg. Multi Core Speed 		1589 Pts Hugely faster 64-core speed.
+320% 		378 Pts
Specifications 
Series
CPU Architecture 		Skylake-X Skylake
Socket
Motherboard Socket 		LGA2066 FCLGA1151
Graphics
Integrated Graphics 		None HD 530
Launch Date
Launch Date 		Q2'17 Q3'15
Cache
Cache 		13.75 MB L3 6 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions 		SSE4.1/4.2, AVX2, AVX-512 SSE4.1/4.2, AVX 2.0
Recommended Price
Recommended Customer Price 		$989.00 - $999.00 $242.00 - $243.00
Max Turbo Frequency
Max Turbo Frequency 		4.30 GHz 3.9 GHz
Thermal Solution Specification
Thermal Solution Specification 		PCG 2017X PCG 2015D (130W)
Max Memory Size
Max Memory Size (dependent on memory type) 		128 GB 64 GB
Memory Types
Memory Types 		DDR4-2666 DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Memory Channels
Max # of Memory Channels 		4 2
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		Yes No
Max # of PCI Express Lanes
Max # of PCI Express Lanes 		44 16

More specs » More specs »
Conclusion 
Average Bench 81.9%
Average Bench 72.4%
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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]

MORE DETAILS

The Intel Core i5-6600K is based on the new "Skylake" 14nm manufacturing process. Sporting 4 physical cores with base/turbo clocks of 3.5/3.9 GHz the 6600K and its predecessor, the 4690K share the same basic configuration and disappointingly, offer similar performance. Comparing the 6600K and 6700K shows that the 6700K has faster multi and single core performance. The improved multi core performance is due to Hyperthreading which is the key differentiator for the i7-6700K. The gap in single core performance can largely be eliminated by overclocking the i5-6600K so although the stock effective speed is significantly higher on the 6700K, this gap diminishes significantly when both processors are overclocked. At a 30% discount, the 6600K is the better value gaming CPU. [Aug '15 CPUPro]

MORE DETAILS

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