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IntelBX80662I76700K
IntelBX80619I73960X
▲ 7847,150 ▼

4 Cores, 8 Threads @4.0GHz, Skylake.
Release date: Q3 2015.

VS
▲ 53588 ▼

6 Cores, 12 Threads @3.3GHz, Sandy Bridge-E.
Release date: Q3 2011.

Effective Speed 
+4%
Real World Speed
Performance profile from 591,143 user samples
Benchmark your CPU here
588,978 User Benchmarks
Best Bench: 90% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 70% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 70% Great: 90%
SPEED RANK: 224th / 1442
Gaming
Gaming 81%
Aircraft carrier
Desktop
Desktop 85%
Aircraft carrier
Workstation
Workstation 67%
Battle cruiser
2,165 User Benchmarks
Best Bench: 89% Base clock 3.3 GHz
Worst Bench: 66% Base clock 3.3 GHz, turbo 0.85 GHz (avg)
Poor: 66% Great: 89%
SPEED RANK: 270th / 1442
Gaming
Gaming 78%
Battleship
Desktop
Desktop 79%
Battleship
Workstation
Workstation 67%
Battle cruiser
Effective Speed
Effective CPU Speed 		80.8 % +4% 77.7 %
Average Score 
+10%
Memory
Avg. Memory Latency 		88.6 Pts +2% 87.1 Pts
1-Core
Avg. Single Core Speed 		119 Pts Faster single-core speed.
+23% 		96.7 Pts
2-Core
Avg. Dual Core Speed 		224 Pts Faster dual-core speed.
+17% 		192 Pts
4-Core
Avg. Quad Core Speed 		395 Pts Slightly faster quad-core speed.
+7% 		369 Pts
8-Core
Avg. Octa Core Speed 		597 Pts +2% 585 Pts
Overclocked Score 
+5%
Memory
OC Memory Latency 		95.9 Pts +1% 95.3 Pts
1-Core
OC Single Core Speed 		137 Pts Faster OC single-core speed.
+16% 		118 Pts
2-Core
OC Dual Core Speed 		258 Pts Faster OC dual-core speed.
+11% 		233 Pts
4-Core
OC Quad Core Speed 		459 Pts +0% 457 Pts
8-Core
OC Octa Core Speed 		696 Pts 715 Pts +3%
Value & Sentiment 
+∞%
Market Share
Based on 67,714,564 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		1.13 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		91.1 % Better value.
+16% 		78.7 %
User Rating
UBM User Rating 		78 % Much more popular.
+47% 		53 %
Price
Price (score) 		$180 Much cheaper.
+32% 		$265
Nice To Haves 
+0%
Age
Newest 		104 Months Much more recent.
+31% 		151 Months
TDP
Thermal Design Power (TDP) 		91 Watts Much more energy efficient.
+30% 		130 Watts
Cores
CPU Processing Cores 		4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads 		8 threads 12 threads Much higher thread count.
+50%
Lithography
Manufacturing process 		14 nm Much newer manufacturing.
+56% 		32 nm
Base Clock
Base Clock Speed 		4 GHz Faster base frequency.
+21% 		3.3 GHz
Turbo Clock
Turbo Clock Speed 		4.2 GHz Slightly faster turbo frequency.
+8% 		3.9 GHz
64-Core
OC Multi Core Speed 		716 Pts 888 Pts Faster OC 64-core speed.
+24%
64-Core
Avg. Multi Core Speed 		612 Pts 728 Pts Faster 64-core speed.
+19%
Specifications 
Series
CPU Architecture 		Skylake Sandy Bridge-E
Socket
Motherboard Socket 		FCLGA1151 FCLGA2011
Graphics
Integrated Graphics 		HD 530 None
Launch Date
Launch Date 		Q3'15 Q4'11
Cache
Cache 		8 MB SmartCache 15 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions 		SSE4.1/4.2, AVX 2.0 SSE4.2, AVX, AES
Lithography
Lithography 		14 nm 32 nm
Recommended Price
Recommended Customer Price 		$339.00 - $350.00 N/A
Max Turbo Frequency
Max Turbo Frequency 		4.2 GHz 3.9 GHz
Bus Speed
Bus Speed 		8 GT/s DMI3 5 GT/s DMI2
Memory Types
Memory Types 		DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR3 1066/1333/1600
Memory Channels
Max # of Memory Channels 		2 4
Memory Bandwidth
Max Memory Bandwidth 		34.1 GB/s 51.2 GB/s
Package Size
Package Size 		37.5mm x 37.5mm 52.5mm x 45.0mm
PCI Express Revision
PCI Express Revision 		3.0 2.0
Max # of PCI Express Lanes
Max # of PCI Express Lanes 		16 40

More specs » More specs »
Conclusion 
Average Bench 80.8%
Average Bench 77.7%
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The Core i7-6700K is Intel's latest "Skylake" flagship processor. It replaces the hugely successful i7-4790K and takes the crown as the fastest mainstream consumer CPU available. Comparing performance and specs between the 4790K and 6700K shows that the configuration is largely unchanged (same base clocks, cores, threads) but the improved manufacturing process (14nm) brings a small reduction in TDP and a performance improvement of 8%; almost exactly the same jump as between the Ivy Bridge 3770K and Haswell 4770K. Owners of any unlocked-K Intel CPU from Sandy Bridge or onwards still have no real reason to upgrade as the performance improvements are largely academic but the i7-6700K will be the CPU of choice for the vast majority of top end PC builds in 2015. [Aug '15 CPUPro]

MORE DETAILS

The fact that the near three year old Intel i7-3960X still tops the speed charts reflects just how little competition there is in the CPU market. Intel have dominated for so long that there is simply no economic incentive to push the speed boundaries at anywhere nearly the pace of improvement we saw in previous years. The i7-3960X has 6 cores and 12 threads which is two cores more than the vast majority of Intel's other top end processors. The extra two cores explain why the 3960X still performs so well compared to the majority of the 3960X's newer siblings. This processor will offer little more than a far cheaper i3 to regular desktop users but for server orientated workloads it is still one of the best processors available. [Mar '14 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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