IntelBX80684I58600K
$260
IntelBX80684I38350K
 $260 

6 Cores, 6 Threads
@3.6GHz Coffee Lake (2017)

4 Cores, 4 Threads
@4.0GHz Coffee Lake (2017)

Real World Speed
Performance profile from 144 user samples
55 User Benchmarks
Best Bench: 124% Base clock 3.6 GHz, turbo 5.2 GHz (avg)
Worst Bench: 92% Base clock 3.6 GHz, turbo 5.2 GHz (avg)
Poor: 92% Great: 124%
SPEED RANK: 9th / 980
Gaming
Gaming 106%
UFO
Desktop
Desktop 102%
UFO
Workstation
Workstation 77%
Battleship
89 User Benchmarks
Best Bench: 116% Base clock 4 GHz, turbo 5 GHz (avg)
Worst Bench: 79% Base clock 4 GHz, turbo 4 GHz (avg)
Poor: 79% Great: 116%
SPEED RANK: 16th / 980
Gaming
Gaming 98%
Nuclear submarine
Desktop
Desktop 96%
Nuclear submarine
Workstation
Workstation 60%
Gunboat
Effective Speed
Effective CPU Speed
106 % Slightly faster effective speed.
+7%
98.4 % -7%
SC Mixed
Avg. Single Core Mixed Speed
138 Pts +2% 135 Pts -2%
QC Mixed
Avg. Quad Core Mixed Speed
538 Pts Slightly faster quad-core speed.
+5%
511 Pts -5%
MC Mixed
Avg. Multi Core Mixed Speed
779 Pts Much faster multi-core speed.
+49%
524 Pts -49%
SC Mixed
OC Single Core Mixed Speed
159 Pts +1% 158 Pts -1%
QC Mixed
OC Quad Core Mixed Speed
632 Pts +3% 615 Pts -3%
MC Mixed
OC Multi Core Mixed Speed
944 Pts Much faster OC multi-core speed.
+53%
618 Pts -53%
Market Share
Based on 5,465,458 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.15 % Hugely higher market share.
+275%
0.04 % -275%
Value
Value For Money
110 % Slightly better value.
+6%
104 % -6%
User Rating
UBM User Rating
59 % +2% 58 % -2%
Price
Price (score)
$260 -4% $250 +4%
Age
Newest
0 Months Hugely more recent.
+100%
1 Months -100%
TDP
Thermal Design Power (TDP)
95 Watts -4% 91 Watts +4%
Cores
CPU Processing Cores
6 cores Much higher core count.
+50%
4 cores -50%
Threads
CPU Processing Threads
6 threads Much higher thread count.
+50%
4 threads -50%
Lithography
Manufacturing process
14 nm 0% 14 nm 0%
Base Clock
Base Clock Speed
3.6 GHz -11% 4 GHz Slightly faster base frequency.
+11%
Turbo Clock
Turbo Clock Speed
4.3 GHz Slightly faster turbo frequency.
+8%
4 GHz -8%
SC Int
Single Core Integer Speed
155 Pts +1% 154 Pts -1%
SC Float
Single Core Floating Point Speed
163 Pts +1% 161 Pts -1%
QC Int
Quad Core Integer Speed
616 Pts +3% 600 Pts -3%
QC Float
Quad Core Floating Point Speed
650 Pts +1% 642 Pts -1%
MC Int
Multi Core Integer Speed
920 Pts Much faster multi-core int speed.
+54%
599 Pts -54%
MC Float
Multi Core Floating Point Speed
974 Pts Much faster multi-core fp speed.
+51%
644 Pts -51%
Series
CPU Architecture
Coffee Lake (2017) Coffee Lake (2017)
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 UHD 630
Cache
Cache
9 MB 8 MB
Memory Types
Memory Types
DDR4-2666 DDR4-2400
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 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

More specs » More specs »
ADVERTISEMENT

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]

MORE DETAILS

The quad core i3-8350K hails from Intel’s most recent (and as yet unreleased) generation of Coffee Lake processors. It has a stock clock of 4.0 GHz, 8MB of cache and a TDP of 95W. The 8350K is the first i3 processor to feature four cores (previous generations of i3s had two cores and four threads). With this eighth generation of processors, Intel has introduced a step change in their nomenclature which witnesses the old quad core i5s become the new quad core i3s. Our benchmarks show a 25% increase in effective speed between generations of i3 8350K vs 7350K and near equivalence between the outgoing i5-7600K and the new i3-8350K. Although the price points of Coffee Lake are not yet known, if Intel keep them roughly in line with the previous generations (i3 ~= $140) this will represent the best improvement in value for money since Sandy Bridge as the 8350K at $140 would be 34.8% cheaper than a 7600K at $215. Cynics among us will see this as an effort to fend off competition from AMD’s new multi-core Ryzen processors. It appears Intel may have been successful with this move as early benchmarks from the 8350K suggest that it beats the more expensive 8 core Ryzen 7 1700 in single and quad core performance by 25%. The 8350K is a great choice for gaming builds, but the budget will also need to factor in a complementary motherboard based on the new 300 series chipset. Expect the quad core i3-8100 which is the 8350K’s little sister featuring a base clock of 3.6 GHz, to follow shortly. [Aug '17 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) October 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

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-7700K $300Nvidia GTX 1070 $380Samsung 850 Evo 250GB $98
AMD Ryzen 7 1700 $280AMD RX 480 $491Samsung 850 Pro 256GB $120
Intel Core i5-7600K $220Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $159
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $163SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $842SanDisk Extreme 32GB $22
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $180SanDisk Ultra Fit 32GB $13
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback