IntelBX80684I78700K
IntelBX80684I38350K

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

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4 Cores, 4 Threads @4.0GHz, Coffee Lake.
Release date: Q3 2017.

Real World Speed
Performance profile from 335,239 user samples
322,715 User Benchmarks
Best Bench: 107% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 76% Base clock 3.7 GHz, turbo 4.3 GHz (avg)
Poor: 76% Great: 107%
SPEED RANK: 14th / 1184
Gaming
Gaming 92%
Nuclear submarine
Desktop
Desktop 95%
Nuclear submarine
Workstation
Workstation 79%
Battleship
12,524 User Benchmarks
Best Bench: 90% Base clock 2.7 GHz, turbo 2.7 GHz (avg)
Worst Bench: 57% Base clock 4 GHz, turbo 4 GHz (avg)
Poor: 57% Great: 90%
SPEED RANK: 75th / 1184
Gaming
Gaming 74%
Battleship
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 45%
Yacht
Effective Speed
Effective CPU Speed
92.4 % Faster effective speed.
+24%
74.2 %
1-Core
Avg. Single Core Mixed Speed
137 Pts Slightly faster single-core speed.
+10%
125 Pts
2-Core
Avg. Dual Core Mixed Speed
270 Pts Slightly faster dual-core speed.
+9%
248 Pts
4-Core
Avg. Quad Core Mixed Speed
520 Pts Slightly faster quad-core speed.
+13%
462 Pts
8-Core
Avg. Octa Core Mixed Speed
848 Pts Hugely faster octa-core speed.
+80%
470 Pts
64-Core
Avg. Multi Core Mixed Speed
1065 Pts Hugely faster 64-core speed.
+125%
473 Pts
1-Core
OC Single Core Mixed Speed
155 Pts +4% 149 Pts
2-Core
OC Dual Core Mixed Speed
308 Pts Slightly faster OC dual-core speed.
+5%
293 Pts
4-Core
OC Quad Core Mixed Speed
608 Pts Slightly faster OC quad-core speed.
+8%
565 Pts
8-Core
OC Octa Core Mixed Speed
990 Pts Much faster OC octa-core speed.
+76%
564 Pts
64-Core
OC Multi Core Mixed Speed
1220 Pts Hugely faster OC 64-core speed.
+113%
574 Pts
Market Share
Based on 21,082,021 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.02 % Insanely higher market share.
+2,786%
0.07 %
Value
Value For Money
86.4 % +2% 84.7 %
User Rating
UBM User Rating
133 % Hugely more popular.
+111%
63 %
Price
Price (score)
$355 $172 Much cheaper.
+52%
Age
Newest
24 Months +4% 25 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 Hugely higher thread count.
+200%
4 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.7 GHz 4 GHz Slightly faster base frequency.
+8%
Turbo Clock
Turbo Clock Speed
4.7 GHz Faster turbo frequency.
+17%
4 GHz
Series
CPU Architecture
Coffee Lake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 UHD 630
Cache
Cache
12 MB 8 MB
Memory Types
Memory Types
DDR4-2666 DDR4-2400
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.20 GHz 1.15 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 No
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
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

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 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 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop users. 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
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Intel Core i5-9600K $240Nvidia RTX 2060 $349Samsung 850 Evo 500GB $107
Intel Core i7-9700K $350Nvidia GTX 1660-Ti $270Samsung 850 Pro 256GB $200
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
Seagate Barracuda 3TB (2016) $78G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $70SanDisk Ultra Fit 32GB $14
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