IntelBX80623I72600
IntelBX80684I59600K

4 Cores, 8 Threads @3.4GHz, Sandy Bridge.
Release date: Q1 2011.

6 Cores, 6 Threads @3.7GHz, Coffee Lake.
Release date: Q4 2018.

Real World Speed
Performance profile from 337,408 user samples
117,289 User Benchmarks
Best Bench: 78% Base clock 3.3 GHz, turbo 3.95 GHz (avg)
Worst Bench: 61% Base clock 3.4 GHz, turbo 3.45 GHz (avg)
Poor: 61% Great: 78%
SPEED RANK: 277th / 1276
Gaming
Gaming 71%
Battleship
Desktop
Desktop 75%
Battleship
Workstation
Workstation 56%
Gunboat
220,119 User Benchmarks
Best Bench: 104% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 84% Base clock 3.7 GHz, turbo 0.6 GHz (avg)
Poor: 84% Great: 104%
SPEED RANK: 22nd / 1276
Gaming
Gaming 95%
Nuclear submarine
Desktop
Desktop 95%
Nuclear submarine
Workstation
Workstation 79%
Battleship
Effective Speed
Effective CPU Speed
71.2 % 94.6 % Much faster effective speed.
+33%
Memory
Avg. Memory Latency
87.7 Pts 91.9 Pts +5%
1-Core
Avg. Single Core Mixed Speed
90.6 Pts 135 Pts Much faster single-core speed.
+49%
2-Core
Avg. Dual Core Mixed Speed
172 Pts 268 Pts Much faster dual-core speed.
+56%
4-Core
Avg. Quad Core Mixed Speed
299 Pts 526 Pts Much faster quad-core speed.
+76%
8-Core
Avg. Octa Core Mixed Speed
435 Pts 752 Pts Much faster octa-core speed.
+73%
Memory
OC Memory Latency
93.5 Pts 96.8 Pts +4%
1-Core
OC Single Core Mixed Speed
100 Pts 154 Pts Much faster OC single-core speed.
+54%
2-Core
OC Dual Core Mixed Speed
195 Pts 306 Pts Much faster OC dual-core speed.
+57%
4-Core
OC Quad Core Mixed Speed
362 Pts 609 Pts Much faster OC quad-core speed.
+68%
8-Core
OC Octa Core Mixed Speed
506 Pts 879 Pts Much faster OC octa-core speed.
+74%
Market Share
Based on 36,429,802 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.39 % 1.37 % Hugely higher market share.
+251%
Value
Value For Money
78.4 % 105 % Much better value.
+33%
User Rating
UBM User Rating
88 % 221 % Hugely more popular.
+151%
Price
Price (score)
$196 $193 +2%
Age
Newest
119 Months 25 Months Much more recent.
+79%
TDP
Thermal Design Power (TDP)
95 Watts 95 Watts
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
8 threads Much higher thread count.
+33%
6 threads
Lithography
Manufacturing process
32 nm 14 nm Much newer manufacturing.
+56%
Base Clock
Base Clock Speed
3.4 GHz 3.7 GHz Slightly faster base frequency.
+9%
Turbo Clock
Turbo Clock Speed
3.8 GHz 4.6 GHz Faster turbo frequency.
+21%
64-Core
OC Multi Core Mixed Speed
509 Pts 888 Pts Much faster OC 64-core speed.
+74%
64-Core
Avg. Multi Core Mixed Speed
442 Pts 762 Pts Much faster 64-core speed.
+72%
Series
CPU Architecture
Sandy Bridge Coffee Lake
Socket
Motherboard Socket
LGA1155 FCLGA1151
Graphics
Integrated Graphics
HD 2000 UHD 630
Launch Date
Launch Date
Q1'11 Q4'18
Cache
Cache
8 MB SmartCache 9 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Embedded Options Available
Embedded Options Available
Yes No
Lithography
Lithography
32 nm 14 nm
Recommended Price
Recommended Customer Price
$273.00 $262.00 - $263.00
Max Turbo Frequency
Max Turbo Frequency
3.8 GHz 4.60 GHz
Bus Speed
Bus Speed
5 GT/s DMI 8 GT/s DMI3
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3 1066/1333 DDR4-2666
Memory Bandwidth
Max Memory Bandwidth
21 GB/s 41.6 GB/s
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 2000 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
850 MHz 350 MHz
# of Displays Supported
# of Displays Supported ‡
2 3
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.35 GHz 1.15 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
PCI Express Revision
PCI Express Revision
2.0 3.0

More specs » More specs »
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If there is any chance whatsoever that you may decide to overclock your CPU then it makes a lot more sense to go for the 2600K "K" version which, thanks to its unlocked clock multiplier, is a lot easier to overclock. For the few extra pounds it costs, I would recommend taking the K version just on the off chance because there are easily 10%+ performance gains to be had. Otherwise this is still a superb processor and still holds its own against the i7-4770 which is its two generations newer replacement. [Feb '12 CPUPro]

MORE DETAILS

The hex-core i5-9600K is third in Intel’s line-up of 9th generation Coffee Lake CPUs. It has a TDP of 95W and requires an aftermarket cooler (such as the $20 GAMMAXX 400). The 9600K was designed to be overclocked. Once this is enabled in the BIOS (requires a Z-series motherboard), the 9600K runs 10% faster. In terms of performance, the i5-9600K is almost unbeatable for desktop users and it has sufficient multi-core performance to handle all but the most demanding workstation tasks. For CPU encoding (Cinebench, Blender, Handbrake etc.) the Ryzen 3000 series offers great 64-core performance. For example the overclocked Ryzen 3600 is approximately 13% worse for gaming, desktop and normal consumer workloads but it is 27% faster for 64-core processing. CPU encoding is akin to using hair clippers on a lawn, encoding tasks are far better performed by dedicated hardware such an NVENC or QuickSync. At stock clocks the i5-9600K is around 8% slower than Intel’s flagship i9-9900K but when both are overclocked, the 9600K closes the gaming gap to within two or three percent. Considering that the 9900K is the fastest gaming processor available, and almost twice the price of the 9600K, this is no small feat. The i5-9600K is aimed squarely at gamers who are not willing to compromise on performance but don't want to pay more than they need to. [Oct '18 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) December 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

  • - 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.

 Frequently Asked Questions

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The Best.
CPUGPUSSD
Intel Core i5-9600K $193Nvidia RTX 3070 $500Crucial MX500 250GB $34
Intel Core i5-9400F $155Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $78
Intel Core i5-10600K $250Nvidia GTX 1650S (Super) $190Samsung 850 Pro 512GB $181
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $71SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $71SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $639SanDisk Ultra Fit 32GB $16
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