IntelBX80662I76700K
AMDFD8350FRHKBOX

4 Cores, 8 Threads
@4.0GHz Skylake (2015)

8 Cores, 8 Threads
@4.0GHz Piledriver (2012)

Real World Speed
Performance profile from 249,764 user samples
160,642 User Benchmarks
Best Bench: 106% Base clock 4 GHz, turbo 5 GHz (avg)
Worst Bench: 79% Base clock 4 GHz, turbo 1.25 GHz (avg)
Poor: 79% Great: 106%
SPEED RANK: 23rd / 980
Gaming
Gaming 92%
Nuclear submarine
Desktop
Desktop 93%
Nuclear submarine
Workstation
Workstation 68%
Battle cruiser
89,122 User Benchmarks
Best Bench: 65% Base clock 4.9 GHz
Worst Bench: 49% Base clock 4.2 GHz, turbo 1.4 GHz (avg)
Poor: 49% Great: 65%
SPEED RANK: 204th / 980
Gaming
Gaming 57%
Gunboat
Desktop
Desktop 57%
Gunboat
Workstation
Workstation 46%
Yacht
Effective Speed
Effective CPU Speed
91.9 % Much faster effective speed.
+61%
57.2 % -61%
SC Mixed
Avg. Single Core Mixed Speed
129 Pts Much faster single-core speed.
+68%
76.6 Pts -68%
QC Mixed
Avg. Quad Core Mixed Speed
450 Pts Much faster quad-core speed.
+61%
280 Pts -61%
MC Mixed
Avg. Multi Core Mixed Speed
688 Pts Much faster multi-core speed.
+42%
486 Pts -42%
SC Mixed
OC Single Core Mixed Speed
144 Pts Much faster OC single-core speed.
+68%
85.5 Pts -68%
QC Mixed
OC Quad Core Mixed Speed
530 Pts Much faster OC quad-core speed.
+66%
320 Pts -66%
MC Mixed
OC Multi Core Mixed Speed
778 Pts Much faster OC multi-core speed.
+40%
557 Pts -40%
Market Share
Based on 5,944,432 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.29 % Much higher market share.
+32%
1.74 % -32%
Value
Value For Money
93.4 % Better value.
+15%
80.9 % -15%
User Rating
UBM User Rating
106 % Much more popular.
+43%
74 % -43%
Price
Price (score)
$279 -59% $115 Much cheaper.
+59%
Age
Newest
27 Months Much more recent.
+56%
61 Months -56%
TDP
Thermal Design Power (TDP)
91 Watts More energy efficient.
+27%
125 Watts -27%
Cores
CPU Processing Cores
4 cores -100% 8 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads
8 threads 0% 8 threads 0%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+56%
32 nm -56%
Base Clock
Base Clock Speed
4 GHz 0% 4 GHz 0%
Turbo Clock
Turbo Clock Speed
4.2 GHz 0% 4.2 GHz 0%
SC Int
Single Core Integer Speed
142 Pts Much faster single-core int speed.
+54%
92 Pts -54%
SC Float
Single Core Floating Point Speed
147 Pts Hugely faster single-core fp speed.
+85%
79.6 Pts -85%
QC Int
Quad Core Integer Speed
514 Pts Much faster quad-core int speed.
+50%
342 Pts -50%
QC Float
Quad Core Floating Point Speed
545 Pts Hugely faster quad-core fp speed.
+84%
296 Pts -84%
MC Int
Multi Core Integer Speed
718 Pts Faster multi-core int speed.
+27%
566 Pts -27%
MC Float
Multi Core Floating Point Speed
817 Pts Much faster multi-core fp speed.
+68%
485 Pts -68%
Series
CPU Architecture
Skylake (2015) Piledriver (2012)
Socket
Motherboard Socket
FCLGA1151 AM3+
Graphics
Integrated Graphics
HD 530 None
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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]

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In terms of raw single-core performance the flagship AMD FX-8350 is lagging behind intel's processor line-up by over two generations. The PassMark Single Thread scores for the i5-2500K vs the FX-8350 are 1863 to 1520 which shows that in terms of raw per-core processing the FX-8350 is lagging the two year old i5 by 23%. Where the AMD FX makes up is on multi-core performance, with a score of 9156 vs 6745, the AMD leads the Intel 2500K by 36% making it the far more capable multi-threaded server orientated performer. The AMD is also cheaper but significantly more power hungry which counts strongly against it as a sever proposition. The FX-8350 could be a good fit for specific server use cases but for general consumer use, which is single and dual core intensive, Intel's two year old i5-2500K delivers better performance. [May '13 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) November 2017 CPU Rankings.

Welcome to our desktop CPU comparison. We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by price to yield a value for money rating which is geared towards gamers. Calculated values don't always paint the whole picture so we check them against hundreds of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top CPUs. [CPUPro]

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.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

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CPUGPUSSD
Intel Core i7-7700K $280Nvidia GTX 1070 $410Samsung 850 Evo 250GB $88
AMD Ryzen 7 1700 $250AMD RX 480 $240Samsung 850 Pro 256GB $110
Intel Core i5-7600K $180Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $160SanDisk Extreme 64GB $30
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $17
Seagate Barracuda 7200.14 1TB $52Corsair Vengeance LPX DDR4 3200 C16 2x8GB $195SanDisk Ultra Fit 32GB $12
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