IntelBX80662I76700K
IntelBX80684I59400

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

6 Cores, 6 Threads @2.90 GHz, 65 W.
Release date ≈ Q1 2019.

Real World Speed
Performance profile from 479,816 user samples
467,605 User Benchmarks
Best Bench: 95% Base clock 4 GHz, turbo 4.7 GHz (avg)
Worst Bench: 68% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 68% Great: 95%
SPEED RANK: 98th / 1272
Gaming
Gaming 83%
Aircraft carrier
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 69%
Battle cruiser
12,211 User Benchmarks
Best Bench: 92% Base clock 2.9 GHz, turbo 3.9 GHz (avg)
Worst Bench: 76% Base clock 2.9 GHz, turbo 1.7 GHz (avg)
Poor: 76% Great: 92%
SPEED RANK: 55th / 1272
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 88%
Aircraft carrier
Workstation
Workstation 72%
Battleship
Effective Speed
Effective CPU Speed
83.5 % 87 % +4%
Memory
Avg. Memory Latency
90 Pts +1% 89.4 Pts
1-Core
Avg. Single Core Mixed Speed
123 Pts +3% 119 Pts
2-Core
Avg. Dual Core Mixed Speed
235 Pts 236 Pts +0%
4-Core
Avg. Quad Core Mixed Speed
416 Pts 459 Pts Faster quad-core speed.
+10%
8-Core
Avg. Octa Core Mixed Speed
627 Pts 651 Pts +4%
Memory
OC Memory Latency
96.9 Pts +2% 94.6 Pts
1-Core
OC Single Core Mixed Speed
142 Pts Faster OC single-core speed.
+14%
125 Pts
2-Core
OC Dual Core Mixed Speed
277 Pts Faster OC dual-core speed.
+12%
248 Pts
4-Core
OC Quad Core Mixed Speed
510 Pts +5% 488 Pts
8-Core
OC Octa Core Mixed Speed
743 Pts +5% 709 Pts
Market Share
Based on 34,473,907 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.19 % Hugely higher market share.
+750%
0.14 %
Value
Value For Money
83.7 % 101 % Better value.
+20%
User Rating
UBM User Rating
140 % Hugely more popular.
+133%
60 %
Price
Price (score)
$276 $165 Much cheaper.
+40%
Age
Newest
62 Months 19+ Months Much more recent.
+69%
64-Core
OC Multi Core Mixed Speed
745 Pts +5% 712 Pts
64-Core
Avg. Multi Core Mixed Speed
634 Pts 659 Pts +4%
Launch Date
Launch Date
Q3'15 Q1'19
Cache
Cache
8 MB SmartCache 9 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Max Turbo Frequency
Max Turbo Frequency
4.2 GHz 4.10 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (65W)
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 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 1.05 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
TSX-NI
Intel® TSX-NI
Yes No

More specs » More specs »
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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

Already not the best choice, and Ryzen 3rd gen is coming out soon. [Jul '19 GamingEliot]

MORE DETAILS

Processor Rankings (Price vs Performance) October 2020 CPU Rankings.

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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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

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How it works

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  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
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 Frequently Asked Questions

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HDDRAMUSB
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Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $548SanDisk Extreme 16GB $28
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