IntelBX80662I56600K
IntelBX80684I99900K
Real World Speed
Performance profile from 439,707 user samples
244,179 User Benchmarks
Best Bench: 94% Base clock 3.5 GHz, turbo 4.8 GHz (avg)
Worst Bench: 66% Base clock 3.5 GHz, turbo 4.25 GHz (avg)
Poor: 66% Great: 94%
SPEED RANK: 111th / 1255
Gaming
Gaming 81%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 62%
Destroyer
195,528 User Benchmarks
Best Bench: 106% Base clock 3.6 GHz, turbo 5.2 GHz (avg)
Worst Bench: 86% Base clock 3.6 GHz, turbo 4.7 GHz (avg)
Poor: 86% Great: 106%
SPEED RANK: 10th / 1255
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 99%
Nuclear submarine
Workstation
Workstation 98%
Nuclear submarine
Effective Speed
Effective CPU Speed
81.4 % 98.6 % Faster effective speed.
+21%
Memory
Avg. Memory Latency
88.6 Pts 93.5 Pts Slightly lower memory latency.
+6%
1-Core
Avg. Single Core Mixed Speed
117 Pts 142 Pts Faster single-core speed.
+21%
2-Core
Avg. Dual Core Mixed Speed
231 Pts 282 Pts Faster dual-core speed.
+22%
4-Core
Avg. Quad Core Mixed Speed
429 Pts 556 Pts Faster quad-core speed.
+30%
8-Core
Avg. Octa Core Mixed Speed
434 Pts 1024 Pts Hugely faster octa-core speed.
+136%
Memory
OC Memory Latency
96.7 Pts 97.7 Pts +1%
1-Core
OC Single Core Mixed Speed
141 Pts 154 Pts Slightly faster OC single-core speed.
+9%
2-Core
OC Dual Core Mixed Speed
279 Pts 308 Pts Faster OC dual-core speed.
+10%
4-Core
OC Quad Core Mixed Speed
538 Pts 615 Pts Faster OC quad-core speed.
+14%
8-Core
OC Octa Core Mixed Speed
538 Pts 1167 Pts Hugely faster OC octa-core speed.
+117%
Market Share
Based on 30,503,987 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.65 % 1.31 % Hugely higher market share.
+102%
Value
Value For Money
89.7 % Slightly better value.
+6%
84.9 %
User Rating
UBM User Rating
119 % 189 % Much more popular.
+59%
Price
Price (score)
$195 Much cheaper.
+59%
$480
Age
Newest
59 Months 20 Months Much more recent.
+66%
TDP
Thermal Design Power (TDP)
91 Watts +4% 95 Watts
Cores
CPU Processing Cores
4 cores 8 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads
4 threads 16 threads Hugely higher thread count.
+300%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.5 GHz 3.6 GHz +3%
Turbo Clock
Turbo Clock Speed
3.9 GHz 5 GHz Faster turbo frequency.
+28%
64-Core
OC Multi Core Mixed Speed
541 Pts 1628 Pts Hugely faster OC 64-core speed.
+201%
64-Core
Avg. Multi Core Mixed Speed
439 Pts 1469 Pts Hugely faster 64-core speed.
+235%
Series
CPU Architecture
Skylake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 530 UHD 630
Launch Date
Launch Date
Q3'15 Q4'18
Cache
Cache
6 MB SmartCache 16 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 $488.00 - $499.00
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
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes

More specs » More specs »
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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]

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The Intel i9-9900K is an 8 core, 16 thread, unlocked 9th generation Coffee Lake processor. It has a base / boost clocks of 3.6 / 4.7 GHz and a single-core boost of 5.0 GHz (the highest frequency achieved yet from this class of Intel CPU). It features 16 MB of cache, a 95W TDP and Intel UHD 630 graphics. The 9900K is compatible with the new Z390 chipset, and subject to a BIOS update, is also compatible with the older Z370 chipset. Aimed at users who do not wish to compromise, the i9-9900K offers the best gaming and desktop experience available at any price. Heavy workstation users should consider the Ryzen 9 3900X which is similarly priced. Comparing the overclocked 3900X shows that it is just 10% worse for gaming and desktop (sub octa-core) but around 40% better for 64-core computations. Gamers should consider the 9700K which offers identical overclocked gaming performance at a $100 USD discount. [Oct '18 CPUPro]

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Processor Rankings (Price vs Performance) July 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.
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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

  • - Download and run UserBenchMark.
  • - 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.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

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CPUGPUSSD
Intel Core i5-9600K $195Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9400F $155Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $365Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $50
HDDRAMUSB
Seagate Barracuda 1TB (2016) $41Corsair Vengeance LPX DDR4 3200 C16 2x8GB $76SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Extreme 16GB $24
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