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IntelBX80662I56600K
IntelBX80684I78086K
▲ 7428,939 ▼

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

VS
▲ 55793 ▼

6 Cores, 12 Threads @4.00 GHz, Coffee Lake.
Release date ≈ Q2 2018.

Effective Speed 
+26%
Real World Speed
Performance profile from 380,330 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
38,086 User Benchmarks
Best Bench: 102% Base clock 4 GHz, turbo 5.15 GHz (avg)
Worst Bench: 81% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 81% Great: 102%
SPEED RANK: 135th / 1442
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 93%
Nuclear submarine
Workstation
Workstation 82%
Aircraft carrier
Effective Speed
Effective CPU Speed 		72.4 % 90.8 % Faster effective speed.
+26%
Average Score 
+40%
Memory
Avg. Memory Latency 		83.3 Pts 91.6 Pts Slightly lower memory latency.
+10%
1-Core
Avg. Single Core Speed 		110 Pts 132 Pts Faster single-core speed.
+20%
2-Core
Avg. Dual Core Speed 		218 Pts 256 Pts Faster dual-core speed.
+17%
4-Core
Avg. Quad Core Speed 		352 Pts 484 Pts Much faster quad-core speed.
+38%
8-Core
Avg. Octa Core Speed 		373 Pts 800 Pts Hugely faster octa-core speed.
+114%
Overclocked Score 
+31%
Memory
OC Memory Latency 		95.2 Pts 97 Pts +2%
1-Core
OC Single Core Speed 		136 Pts 153 Pts Faster OC single-core speed.
+12%
2-Core
OC Dual Core Speed 		269 Pts 304 Pts Faster OC dual-core speed.
+13%
4-Core
OC Quad Core Speed 		455 Pts 580 Pts Faster OC quad-core speed.
+27%
8-Core
OC Octa Core Speed 		476 Pts 948 Pts Hugely faster OC octa-core speed.
+99%
Value & Sentiment 
+166%
Market Share
Based on 67,738,987 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.5 % Hugely higher market share.
+525% 		0.08 %
Value
Value For Money 		102 % Better value.
+23% 		82.3 %
User Rating
UBM User Rating 		74 % Much more popular.
+35% 		55 %
Price
Price (score) 		$81 Much cheaper.
+80% 		$399
Nice To Haves 
+115%
Age
Newest 		104 Months 70+ Months Much more recent.
+33%
64-Core
OC Multi Core Speed 		484 Pts 1194 Pts Hugely faster OC 64-core speed.
+147%
64-Core
Avg. Multi Core Speed 		378 Pts 1008 Pts Hugely faster 64-core speed.
+167%
Specifications 
Launch Date
Launch Date 		Q3'15 Q2'18
Cache
Cache 		6 MB SmartCache 12 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions 		SSE4.1/4.2, AVX 2.0 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Recommended Price
Recommended Customer Price 		$242.00 - $243.00 N/A
Max Turbo Frequency
Max Turbo Frequency 		3.9 GHz 5.00 GHz
Memory Types
Memory Types 		DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4-2666
Memory Bandwidth
Max Memory Bandwidth 		34.1 GB/s 41.6 GB/s
Processor Graphics
Processor Graphics ‡ 		Intel® HD Graphics 530 Intel® UHD Graphics 630
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.15 GHz 1.20 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡ 		No Yes

More specs » More specs »
Conclusion 
Average Bench 72.4%
Average Bench 90.8%
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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

Intel are celebrating the 40th anniversary of their x86 architecture and 8086 processor with the launch of their high-end i7-8086K. Just 50,000 units of this hex core, twelve threaded Coffee Lake processor have been made available globally. Exactly like the i7-8700K, the 8086K features 12MB of smart (L3) cache, 2 channels of DDR4 RAM and has a TDP of 95W. Essentially, the 8086K is Intel’s current Coffee Lake flagship, the i7-8700K, with a single-core turbo frequency factory overclocked by 300 MHz. Thermals permitting, out of the box, the i7-8086K achieves a single core boost speed of 5.0 GHz – which is a new record for Intel. That said, you would be unlucky if you were unable to achieve a 5.0 GHz single core OC with an 8700K. For everything other than single core, the turbo clock speeds on the 8086K exactly match the 8700K which puts the 8086K firmly into gimmick territory. Directly comparing the 8086K and 8700K shows that for a $100 (24%) price premium you get around a 5% performance improvement which drops to around 2% when both chips are overclocked. If the price gap between the 8086K and the 8700K were to fall to less than 20 USD it may be worth considering the 8086K. [Jun '18 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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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $273Nvidia RTX 4060 $295Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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