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IntelBX80662I76700K
IntelBX80673I77820X
▲ 7847,150 ▼

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

VS
▲ 631,512 ▼

8 Cores, 16 Threads @3.6GHz, Skylake-X.
Release date: Q2 2017.

Effective Speed 
+1%
Real World Speed
Performance profile from 617,502 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
28,524 User Benchmarks
Best Bench: 92% Base clock 3.6 GHz, turbo 4.7 GHz (avg)
Worst Bench: 70% Base clock 3.6 GHz, turbo 3.85 GHz (avg)
Poor: 70% Great: 92%
SPEED RANK: 233rd / 1442
Gaming
Gaming 80%
Aircraft carrier
Desktop
Desktop 81%
Aircraft carrier
Workstation
Workstation 81%
Aircraft carrier
Effective Speed
Effective CPU Speed 		80.8 % +1% 80.1 %
Average Score 
+9%
Memory
Avg. Memory Latency 		88.6 Pts Lower memory latency.
+17% 		75.5 Pts
1-Core
Avg. Single Core Speed 		119 Pts 121 Pts +2%
2-Core
Avg. Dual Core Speed 		224 Pts 238 Pts Slightly faster dual-core speed.
+6%
4-Core
Avg. Quad Core Speed 		395 Pts 455 Pts Faster quad-core speed.
+15%
8-Core
Avg. Octa Core Speed 		597 Pts 822 Pts Much faster octa-core speed.
+38%
Overclocked Score 
+10%
Memory
OC Memory Latency 		95.9 Pts Lower OC memory latency.
+13% 		85 Pts
1-Core
OC Single Core Speed 		137 Pts 138 Pts +1%
2-Core
OC Dual Core Speed 		258 Pts 272 Pts Slightly faster OC dual-core speed.
+5%
4-Core
OC Quad Core Speed 		459 Pts 533 Pts Faster OC quad-core speed.
+16%
8-Core
OC Octa Core Speed 		696 Pts 976 Pts Much faster OC octa-core speed.
+40%
Value & Sentiment 
+687%
Market Share
Based on 67,718,785 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		1.1 % Insanely higher market share.
+2,650% 		0.04 %
Value
Value For Money 		91.1 % Better value.
+23% 		73.8 %
User Rating
UBM User Rating 		78 % More popular.
+24% 		63 %
Price
Price (score) 		$180 Much cheaper.
+52% 		$375
Nice To Haves 
+43%
Age
Newest 		104 Months 81 Months More recent.
+22%
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 		8 threads 16 threads Hugely higher thread count.
+100%
Lithography
Manufacturing process 		14 nm 14 nm
Base Clock
Base Clock Speed 		4 GHz Faster base frequency.
+11% 		3.6 GHz
Turbo Clock
Turbo Clock Speed 		4.2 GHz 4.5 GHz Slightly faster turbo frequency.
+7%
64-Core
OC Multi Core Speed 		716 Pts 1445 Pts Hugely faster OC 64-core speed.
+102%
64-Core
Avg. Multi Core Speed 		612 Pts 1263 Pts Hugely faster 64-core speed.
+106%
Specifications 
Series
CPU Architecture 		Skylake Skylake-X
Socket
Motherboard Socket 		FCLGA1151 LGA2066
Graphics
Integrated Graphics 		HD 530 None
Launch Date
Launch Date 		Q3'15 Q2'17
Cache
Cache 		8 MB SmartCache 11 MB L3
Instruction Set Extensions
Instruction Set Extensions 		SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX 2.0, AVX-512
Recommended Price
Recommended Customer Price 		$339.00 - $350.00 $589.00 - $599.00
Max Turbo Frequency
Max Turbo Frequency 		4.2 GHz 4.30 GHz
Thermal Solution Specification
Thermal Solution Specification 		PCG 2015D (130W) PCG 2017X
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 DDR4-2666
Memory Channels
Max # of Memory Channels 		2 4
Max # of PCI Express Lanes
Max # of PCI Express Lanes 		16 28

More specs » More specs »
Conclusion 
Average Bench 80.8%
Average Bench 80.1%
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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 I7-7820X is the second of three new Skylake-X HEDT (high end desktop processors) released by Intel as part of their core X series (the others being the flagship 10-core i9-7900X and the 6-core i7-7800X). The 7820X is an 8-core, 16-thread CPU which will amply satisfy all but the heaviest of multi-threaded use cases. The 7820X requires a relatively expensive X299 (Basin Falls) motherboard, which costs upwards of $250. The 7820X is listed at $599 which is about $200 more than AMD's current flagship 8-core, 16 thread Ryzen 7 1800X. In addition to better IPC, the 7820X is higher clocked with base and max boost clocks of 3.6/4.5 GHz respectively, compared to 3.6G/4.0 GHz for the Ryzen 7 1800X. The additional $200 (50%) buys you around 20% more performance in both single and multi core workloads. Intel have also released several Kabylake-X HEDT CPUs: the 4-thread i5-7640X and the 8-thread i7-7740X and will shortly release of even higher spec Skylake-X processors. It's probably wise to hold off purchasing until the eagerly anticipated 16-core, 32-thread Ryzen Threadripper CPUs are launched later this month. [Jul '17 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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HDDRAMUSB
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