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IntelBX80662I56600K
IntelBX80671I76900K
▲ 7428,940 ▼

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

VS
▲ 524,888 ▼

8 Cores, 16 Threads @3.2GHz, Broadwell-E.
Release date: Q2 2016.

Effective Speed 
+19%
Real World Speed
Performance profile from 348,999 user samples
Benchmark your CPU here
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
6,755 User Benchmarks
Best Bench: 98% Base clock 4.1 GHz, turbo 4.45 GHz (avg)
Worst Bench: 76% Base clock 3.2 GHz, turbo 1.2 GHz (avg)
Poor: 76% Great: 98%
SPEED RANK: 171st / 1442
Gaming
Gaming 86%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 83%
Aircraft carrier
Effective Speed
Effective CPU Speed 		72.4 % 85.9 % Faster effective speed.
+19%
Average Score 
+32%
Memory
Avg. Memory Latency 		83.3 Pts 87.3 Pts +5%
1-Core
Avg. Single Core Speed 		110 Pts 114 Pts +4%
2-Core
Avg. Dual Core Speed 		218 Pts 228 Pts +5%
4-Core
Avg. Quad Core Speed 		352 Pts 454 Pts Faster quad-core speed.
+29%
8-Core
Avg. Octa Core Speed 		373 Pts 819 Pts Hugely faster octa-core speed.
+120%
Overclocked Score 
+26%
Memory
OC Memory Latency 		95.2 Pts 95.9 Pts +1%
1-Core
OC Single Core Speed 		136 Pts 138 Pts +1%
2-Core
OC Dual Core Speed 		269 Pts 276 Pts +3%
4-Core
OC Quad Core Speed 		455 Pts 545 Pts Faster OC quad-core speed.
+20%
8-Core
OC Octa Core Speed 		476 Pts 985 Pts Hugely faster OC octa-core speed.
+107%
Value & Sentiment 
+353%
Market Share
Based on 67,802,076 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.45 % Insanely higher market share.
+1,400% 		0.03 %
Value
Value For Money 		89.2 % 108 % Better value.
+21%
User Rating
UBM User Rating 		74 % Much more popular.
+42% 		52 %
Price
Price (score) 		$130 $120 Slightly cheaper.
+8%
Nice To Haves 
+87%
Age
Newest 		105 Months 95 Months Slightly more recent.
+10%
TDP
Thermal Design Power (TDP) 		91 Watts Much more energy efficient.
+35% 		140 Watts
Cores
CPU Processing Cores 		4 cores 8 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads 		4 threads 16 threads Hugely higher thread count.
+300%
Lithography
Manufacturing process 		14 nm 14 nm
Base Clock
Base Clock Speed 		3.5 GHz Slightly faster base frequency.
+9% 		3.2 GHz
Turbo Clock
Turbo Clock Speed 		3.9 GHz 4 GHz +3%
64-Core
OC Multi Core Speed 		484 Pts 1428 Pts Hugely faster OC 64-core speed.
+195%
64-Core
Avg. Multi Core Speed 		378 Pts 1206 Pts Hugely faster 64-core speed.
+219%
Specifications 
Series
CPU Architecture 		Skylake Broadwell-E
Socket
Motherboard Socket 		FCLGA1151 LGA2011-V3
Graphics
Integrated Graphics 		HD 530 None
Launch Date
Launch Date 		Q3'15 Q2'16
Cache
Cache 		6 MB SmartCache 20 MB
Recommended Price
Recommended Customer Price 		$242.00 - $243.00 N/A
Max Turbo Frequency
Max Turbo Frequency 		3.9 GHz 4 GHz
Max Memory Size
Max Memory Size (dependent on memory type) 		64 GB 128 GB
Memory Types
Memory Types 		DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4 2400/2133
Memory Channels
Max # of Memory Channels 		2 4
Processor Graphics
Processor Graphics ‡ 		Intel® HD Graphics 530 None
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		No Yes
Max # of PCI Express Lanes
Max # of PCI Express Lanes 		16 40

More specs » More specs »
Conclusion 
Average Bench 72.4%
Average Bench 85.9%
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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

The Core i7-6900K is one of four new Broadwell-E prosumer CPUs. This model has eight cores with base and turbo frequencies of 3.2 and 4.0 GHz respectively. The 6900K is based on a 14 nm architecture, it has a TDP of 140 watts, 40 PCIe 3.0 lanes and no integrated graphics. Because of its MSRP of $1,100, the 6900K only makes sense for very niche use cases which include top end graphics design and video production. Comparing the 6900K and 6700K shows that for typical desktop use the 6900K only offers a gain of around 12% for a whopping three 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 6900K. That said, as a workstation CPU the 6900K is bested only by the $2,000 flagship ten core 6950X. (6900K vs 6950X) [Jun '16 CPUPro]

MORE DETAILS

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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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