IntelBX80684I58600K
IntelBX80646I34130

6 Cores, 6 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2017.

2 Cores, 4 Threads @3.4GHz, Haswell.
Release date: Q3 2013.

Real World Speed
Performance profile from 134,834 user samples
113,173 User Benchmarks
Best Bench: 120% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 88% Base clock 3.6 GHz, turbo 1.25 GHz (avg)
Poor: 88% Great: 120%
SPEED RANK: 33rd / 1165
Gaming
Gaming 102%
UFO
Desktop
Desktop 99%
Nuclear submarine
Workstation
Workstation 74%
Battleship
21,661 User Benchmarks
Best Bench: 57% Base clock 3.4 GHz
Worst Bench: 36% Base clock 3.4 GHz, turbo 1.1 GHz (avg)
Poor: 36% Great: 57%
SPEED RANK: 340th / 1165
Gaming
Gaming 52%
Yacht
Desktop
Desktop 59%
Gunboat
Workstation
Workstation 31%
Sail boat
Effective Speed
Effective CPU Speed
102 % Hugely faster effective speed.
+97%
51.7 %
SC Mixed
Avg. Single Core Mixed Speed
134 Pts Much faster single-core speed.
+48%
90.6 Pts
QC Mixed
Avg. Quad Core Mixed Speed
518 Pts Hugely faster quad-core speed.
+119%
237 Pts
MC Mixed
Avg. Multi Core Mixed Speed
744 Pts Hugely faster multi-core speed.
+204%
245 Pts
SC Mixed
OC Single Core Mixed Speed
156 Pts Much faster OC single-core speed.
+54%
101 Pts
QC Mixed
OC Quad Core Mixed Speed
617 Pts Hugely faster OC quad-core speed.
+133%
265 Pts
MC Mixed
OC Multi Core Mixed Speed
889 Pts Hugely faster OC multi-core speed.
+233%
267 Pts
Market Share
Based on 18,472,065 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.82 % Hugely higher market share.
+486%
0.14 %
Value
Value For Money
106 % Much better value.
+62%
65.6 %
User Rating
UBM User Rating
135 % Hugely more popular.
+141%
56 %
Price
Price (score)
$260 $154 Much cheaper.
+41%
Age
Newest
21 Months Much more recent.
+70%
70 Months
TDP
Thermal Design Power (TDP)
95 Watts 54 Watts Much more energy efficient.
+43%
Cores
CPU Processing Cores
6 cores Hugely higher core count.
+200%
2 cores
Threads
CPU Processing Threads
6 threads Much higher thread count.
+50%
4 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm
Base Clock
Base Clock Speed
3.6 GHz Slightly faster base frequency.
+6%
3.4 GHz
Turbo Clock
Turbo Clock Speed
4.3 GHz Faster turbo frequency.
+26%
3.4 GHz
SC Int
Single Core Integer Speed
150 Pts Much faster single-core int speed.
+50%
99.9 Pts
SC Float
Single Core Floating Point Speed
162 Pts Much faster single-core fp speed.
+59%
102 Pts
QC Int
Quad Core Integer Speed
589 Pts Hugely faster quad-core int speed.
+134%
252 Pts
QC Float
Quad Core Floating Point Speed
648 Pts Hugely faster quad-core fp speed.
+140%
270 Pts
MC Int
Multi Core Integer Speed
851 Pts Hugely faster multi-core int speed.
+238%
252 Pts
MC Float
Multi Core Floating Point Speed
954 Pts Hugely faster multi-core fp speed.
+253%
270 Pts
Series
CPU Architecture
Coffee Lake Haswell
Socket
Motherboard Socket
FCLGA1151 FCLGA1150
Graphics
Integrated Graphics
UHD 630 HD 4400
Launch Date
Launch Date
Q4'17 Q3'13
Cache
Cache
9 MB 3 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX 2.0
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
N/A $117.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI2
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2013C
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-2666 DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
ECC Memory Supported
ECC Memory Supported ‡
No Yes
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD graphics 4400
Graphics Video Max Memory
Graphics Video Max Memory
64 GB 2 GB
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 No
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
Yes No
TSX-NI
Intel® TSX-NI
Yes No
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
PCI Express Revision
PCI Express Revision
3.0 Up to 3.0
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16 or 2x8 or 1x8+2x4 Up to 1x16, 2x8, 1x8+2x4

More specs » More specs »
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The unlocked hex-core i5-8600K from Intel’s latest Coffee Lake generation of processors is the new flagship of the i5 series, succeeding the Kaby Lake quad-core i5-7600K. The 8th generation of processors brings the largest performance uplift since Sandy Bridge by adding more cores at each of the i3, i5 and i7 product lines. Like the other Coffee Lake processors, the i5-8600K is built upon optimized 14nm architecture, marginally improved upon from Kaby Lake and Skylake. The 8600K has a 95W TDP and a nominal stock clock of 3.6 GHz, which boosts to 4.1 GHz for all six cores, 4.2 GHz for dual/quad and 4.3 GHz for single core. Early benchmarks put the i5-8600K’s effective speed 15% ahead of the i5-7600K. A 50% increase in multi-core speed is explained by two additional cores and thanks to the quad-core clock bump from 4 GHz on the 7600K to 4.2 GHz on the 8600K there is also an additional 5% performance boost across all workloads. All Coffee Lake processors require a 300-series chipset, making a straight CPU upgrade unfeasible despite sharing the same socket as their Z270 predecessors. Even though most games still use less than 4 cores simultaneously, the i5-8600K is a great choice for gamers (especially streamers) but for $80 less, the 8350K which is faster than last years 7600K and only marginally weaker for gaming than the 8600K is certainly well worth considering as well. [Oct '17 CPUPro]

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From the point of view of a consumer that typically uses a PC for surfing the web, checking email, listening to music and watching videos, I consider that the Haswell i3 processors currently represent the best value for money. The i3-4130 has a performance profile that is just 7% below the top nine group leader average yet it only costs half as much. Power users that play intensive 3d games or run video editing, graphics design or CAD packages will benefit from more than two cores and will do well to look elsewhere but for regular users overall responsiveness will remain largely unchanged regardless of how much more is spent on the CPU. (My new value pick is the G3420 which supersedes my recommendation of the i3-4130.) [Sep '13 CPUPro]

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Processor Rankings (Price vs Performance) July 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. 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.

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HDDRAMUSB
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