IntelBX80684I78700K
IntelBX80677I77700

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

4 Cores, 8 Threads @3.6GHz, Kaby Lake.
Release date: Q1 2017.

Real World Speed
Performance profile from 1,003,004 user samples
746,287 User Benchmarks
Best Bench: 100% Base clock 3.7 GHz, turbo 5.05 GHz (avg)
Worst Bench: 76% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 76% Great: 100%
SPEED RANK: 146th / 1439
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 90%
Nuclear submarine
Workstation
Workstation 80%
Battleship
256,717 User Benchmarks
Best Bench: 84% Base clock 3.6 GHz, turbo 4 GHz (avg)
Worst Bench: 63% Base clock 3.6 GHz, turbo 4 GHz (avg)
Poor: 63% Great: 84%
SPEED RANK: 286th / 1439
Gaming
Gaming 76%
Battleship
Desktop
Desktop 80%
Battleship
Workstation
Workstation 63%
Destroyer
Effective Speed
Effective CPU Speed
88.4 % Faster effective speed.
+16%
76.2 %
Memory
Avg. Memory Latency
90.1 Pts Slightly lower memory latency.
+7%
84 Pts
1-Core
Avg. Single Core Speed
128 Pts Faster single-core speed.
+16%
110 Pts
2-Core
Avg. Dual Core Speed
249 Pts Faster dual-core speed.
+20%
208 Pts
4-Core
Avg. Quad Core Speed
466 Pts Faster quad-core speed.
+26%
371 Pts
8-Core
Avg. Octa Core Speed
770 Pts Much faster octa-core speed.
+38%
556 Pts
Memory
OC Memory Latency
96.5 Pts +3% 93.3 Pts
1-Core
OC Single Core Speed
148 Pts Faster OC single-core speed.
+21%
122 Pts
2-Core
OC Dual Core Speed
292 Pts Faster OC dual-core speed.
+23%
237 Pts
4-Core
OC Quad Core Speed
558 Pts Much faster OC quad-core speed.
+35%
414 Pts
8-Core
OC Octa Core Speed
892 Pts Much faster OC octa-core speed.
+41%
633 Pts
Market Share
Based on 67,361,224 CPUs tested
Market Share
Market Share (trailing 30 days)
1.64 % Hugely higher market share.
+86%
0.88 %
Value
Value For Money
97.8 % Better value.
+12%
87.7 %
User Rating
UBM User Rating
81 % Much more popular.
+33%
61 %
Price
Price (score)
$192 $167 Cheaper.
+13%
Age
Newest
76 Months More recent.
+11%
85 Months
TDP
Thermal Design Power (TDP)
95 Watts 65 Watts Much more energy efficient.
+32%
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 +3% 3.6 GHz
Turbo Clock
Turbo Clock Speed
4.7 GHz Faster turbo frequency.
+12%
4.2 GHz
64-Core
OC Multi Core Speed
1147 Pts Much faster OC 64-core speed.
+79%
640 Pts
64-Core
Avg. Multi Core Speed
971 Pts Much faster 64-core speed.
+70%
572 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 $303.00 - $312.00
Max Turbo Frequency
Max Turbo Frequency
4.70 GHz 4.20 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2015C (65W)
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
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]

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Processor Rankings (Price vs Performance) February 2024 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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