IntelBX80684I78700K
IntelBX80677I77700K

6 Cores, 12 Threads @3.7GHz, Coffee Lake.
Release date: Q4 2017.

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

Real World Speed
Performance profile from 395,327 user samples
164,304 User Benchmarks
Best Bench: 125% Base clock 3.7 GHz, turbo 5.5 GHz (avg)
Worst Bench: 92% Base clock 3.7 GHz, turbo 1.3 GHz (avg)
Poor: 92% Great: 125%
SPEED RANK: 13th / 1137
Gaming
Gaming 108%
UFO
Desktop
Desktop 105%
UFO
Workstation
Workstation 96%
Nuclear submarine
231,023 User Benchmarks
Best Bench: 110% Base clock 5.2 GHz
Worst Bench: 82% Base clock 4.2 GHz, turbo 1.2 GHz (avg)
Poor: 82% Great: 110%
SPEED RANK: 27th / 1137
Gaming
Gaming 96%
Nuclear submarine
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 71%
Battleship
Effective Speed
Effective CPU Speed
108 % Slightly faster effective speed.
+12%
95.7 %
SC Mixed
Avg. Single Core Mixed Speed
137 Pts +1% 136 Pts
QC Mixed
Avg. Quad Core Mixed Speed
522 Pts Slightly faster quad-core speed.
+12%
466 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1085 Pts Much faster multi-core speed.
+50%
722 Pts
SC Mixed
OC Single Core Mixed Speed
155 Pts +2% 152 Pts
QC Mixed
OC Quad Core Mixed Speed
614 Pts Slightly faster OC quad-core speed.
+11%
554 Pts
MC Mixed
OC Multi Core Mixed Speed
1250 Pts Much faster OC multi-core speed.
+54%
811 Pts
Market Share
Based on 12,239,225 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.6 % Much higher market share.
+75%
2.06 %
Value
Value For Money
102 % Slightly better value.
+14%
89.4 %
User Rating
UBM User Rating
156 % More popular.
+19%
131 %
Price
Price (score)
$340 +3% $350
Age
Newest
13 Months Much more recent.
+41%
22 Months
TDP
Thermal Design Power (TDP)
95 Watts 91 Watts +4%
Cores
CPU Processing Cores
6 cores Much higher core count.
+50%
4 cores
Threads
CPU Processing Threads
12 threads Much higher thread count.
+50%
8 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.7 GHz 4.2 GHz Slightly faster base frequency.
+14%
Turbo Clock
Turbo Clock Speed
4.7 GHz +4% 4.5 GHz
SC Int
Single Core Integer Speed
151 Pts +2% 148 Pts
SC Float
Single Core Floating Point Speed
160 Pts +2% 157 Pts
QC Int
Quad Core Integer Speed
596 Pts Slightly faster quad-core int speed.
+10%
540 Pts
QC Float
Quad Core Floating Point Speed
635 Pts Slightly faster quad-core fp speed.
+9%
585 Pts
MC Int
Multi Core Integer Speed
1144 Pts Much faster multi-core int speed.
+54%
744 Pts
MC Float
Multi Core Floating Point Speed
1321 Pts Much faster multi-core fp speed.
+53%
862 Pts
Series
CPU Architecture
Coffee Lake Kaby Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 HD 630
Launch Date
Launch Date
Q4'17 Q1'17
Cache
Cache
12 MB 8 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX 2.0
Recommended Price
Recommended Customer Price
N/A $339.00 - $350.00
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2015D (130W)
Memory Types
Memory Types
DDR4-2666 DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350 MHz 350.00 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.20 GHz 1.15 GHz
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
Yes No
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 i7-8700K is Intel’s latest, top of the range, 8th generation Coffee Lake processor. Like Kaby Lake and Sky Lake before that, Coffee Lake is based on Intel’s 14nm architecture which has been slightly optimized on each iteration. Following AMD’s modus operandi, Intel has upped the cores and threads across the range of their CPUs. In previous generations, a 6-core processor would have been a high-end desk-top (HEDT) processor, however the i7-8700K is the first Intel CPU with 6 cores and 12 threads to be classified (and priced) as a mainstream consumer processor. Specifically, the i7-8700K features a base clock speed of 3.7 GHz which boosts to 4.7 GHz (4.5 GHz for the previous generation i7-7700k), 12MB of smart (L3) cache and 2 channels of DDR4 RAM. The majority of the performance improvements over the 7th generation stem from the higher core count which results in a 50% increase in multi-core speed between the i7-7700k and i7-8700k. A new motherboard will need to be factored into the budget when upgrading to the 8700K as it requires a new Intel Z370 chipset which has supposedly been designed to better deliver power to CPUs with a greater number of cores. Also available in this latest release of CPUs is the 6 core 6 thread i5-8600k which is a more rational option (around $100 cheaper) for the vast majority of users that don’t require hyper-threading. Sandy bridge owners can finally justify an upgrade but with the next iteration of AMD's Zen architecture just around the corner the CPU market will be a lot faster moving now that Intel, once again, has to compete. [Sep '17 CPUPro]

MORE DETAILS

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]

MORE DETAILS

Processor Rankings (Price vs Performance) November 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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CPUGPUSSD
Intel Core i7-8700K $340Nvidia GTX 1070 $330Samsung 850 Evo 250GB $77
AMD Ryzen 5 1600 $130Nvidia GTX 1060-6GB $220Samsung 850 Evo 500GB $100
Intel Core i5-8600K $237AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $130SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $12
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