IntelBX80677I77700K
IntelBX80684I58600K

4 Cores, 8 Threads @4.2GHz, Kaby Lake.
Release date: Q1 2017.

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

Real World Speed
Performance profile from 240,026 user samples
196,742 User Benchmarks
Best Bench: 110% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 82% Base clock 4.2 GHz, turbo 1.1 GHz (avg)
Poor: 82% Great: 110%
SPEED RANK: 21st / 1122
Gaming
Gaming 96%
Nuclear submarine
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 71%
Battleship
43,284 User Benchmarks
Best Bench: 117% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 90% Base clock 3.6 GHz, turbo 0.8 GHz (avg)
Poor: 90% Great: 117%
SPEED RANK: 12th / 1122
Gaming
Gaming 101%
UFO
Desktop
Desktop 98%
Nuclear submarine
Workstation
Workstation 74%
Battleship
Effective Speed
Effective CPU Speed
95.5 % 101 % Slightly faster effective speed.
+6%
SC Mixed
Avg. Single Core Mixed Speed
136 Pts +3% 132 Pts
QC Mixed
Avg. Quad Core Mixed Speed
464 Pts 516 Pts Slightly faster quad-core speed.
+11%
MC Mixed
Avg. Multi Core Mixed Speed
722 Pts 748 Pts +4%
SC Mixed
OC Single Core Mixed Speed
153 Pts +1% 152 Pts
QC Mixed
OC Quad Core Mixed Speed
552 Pts 598 Pts Slightly faster OC quad-core speed.
+8%
MC Mixed
OC Multi Core Mixed Speed
819 Pts 873 Pts Slightly faster OC multi-core speed.
+7%
Market Share
Based on 10,334,635 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.17 % Much higher market share.
+33%
1.63 %
Value
Value For Money
96.4 % 108 % Slightly better value.
+12%
User Rating
UBM User Rating
125 % 129 % +3%
Price
Price (score)
$285 $245 Slightly cheaper.
+14%
Age
Newest
19 Months 10 Months Much more recent.
+47%
TDP
Thermal Design Power (TDP)
91 Watts +4% 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
14 nm 14 nm
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
+17%
3.6 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz +5% 4.3 GHz
SC Int
Single Core Integer Speed
150 Pts +3% 146 Pts
SC Float
Single Core Floating Point Speed
158 Pts 159 Pts +1%
QC Int
Quad Core Integer Speed
537 Pts 574 Pts Slightly faster quad-core int speed.
+7%
QC Float
Quad Core Floating Point Speed
572 Pts 628 Pts Slightly faster quad-core fp speed.
+10%
MC Int
Multi Core Integer Speed
758 Pts 839 Pts Slightly faster multi-core int speed.
+11%
MC Float
Multi Core Floating Point Speed
866 Pts 940 Pts Slightly faster multi-core fp speed.
+9%
Series
CPU Architecture
Kaby Lake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 630 UHD 630
Launch Date
Launch Date
Q1'17 Q4'17
Cache
Cache
8 MB 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$339.00 - $350.00 N/A
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (130W)
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 350 MHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »
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The Core i7-7700K is Intel’s flagship Kaby Lake based CPU which is reported to have the same IPC as its predecessor, Skylake. Comparing the 7700K and 6700K shows that both average effective speed and peak overclocked speed are up by 7%. Most of the increase in average effective speed is explained by the 5% boost in base clocks from 4.0 to 4.2 GHz. The improved peak lab speed is attributable to a combination of better overclocking capacity and improvements in Intel’s speedshift technology which make the 7700K slightly more responsive. Kaby Lake also has marginally better HD 630 integrated graphics. The i7-7700K is priced similarly to the i7-6700K so for top end gaming and workstation builds, the 7700K is the clear choice for 2017. AMD’s Ryzen will release later this year so things could change at that time. [Jan '17 CPUPro]

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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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Processor Rankings (Price vs Performance) August 2018 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.
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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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  • - Reports are generated and presented on userbenchmark.com.
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CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $370Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $270Samsung 850 Evo 500GB $120
Intel Core i5-8600K $245AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $155SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $901SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $175SanDisk Ultra Fit 32GB $12
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