IntelBX80684I78700K
IntelBX80684I59400F

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

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About

6 Cores, 6 Threads @2.9GHz, Coffee Lake.
Release date: Q1 2019.

Real World Speed
Performance profile from 417,125 user samples
384,815 User Benchmarks
Best Bench: 106% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 80% Base clock 3.7 GHz, turbo 4.55 GHz (avg)
Poor: 80% Great: 106%
SPEED RANK: 15th / 1197
Gaming
Gaming 93%
Nuclear submarine
Desktop
Desktop 94%
Nuclear submarine
Workstation
Workstation 79%
Battleship
32,310 User Benchmarks
Best Bench: 86% Base clock 2.9 GHz, turbo 3.9 GHz (avg)
Worst Bench: 76% Base clock 2.9 GHz, turbo 3.9 GHz (avg)
Poor: 76% Great: 86%
SPEED RANK: 48th / 1197
Gaming
Gaming 83%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 59%
Gunboat
Effective Speed
Effective CPU Speed
93.3 % Slightly faster effective speed.
+13%
82.6 %
1-Core
Avg. Single Core Mixed Speed
137 Pts Slightly faster single-core speed.
+13%
121 Pts
2-Core
Avg. Dual Core Mixed Speed
270 Pts Slightly faster dual-core speed.
+13%
238 Pts
4-Core
Avg. Quad Core Mixed Speed
521 Pts Slightly faster quad-core speed.
+12%
466 Pts
8-Core
Avg. Octa Core Mixed Speed
845 Pts Faster octa-core speed.
+27%
663 Pts
64-Core
Avg. Multi Core Mixed Speed
1058 Pts Much faster 64-core speed.
+57%
672 Pts
1-Core
OC Single Core Mixed Speed
155 Pts Faster OC single-core speed.
+23%
126 Pts
2-Core
OC Dual Core Mixed Speed
308 Pts Faster OC dual-core speed.
+24%
248 Pts
4-Core
OC Quad Core Mixed Speed
602 Pts Faster OC quad-core speed.
+23%
490 Pts
8-Core
OC Octa Core Mixed Speed
983 Pts Much faster OC octa-core speed.
+38%
714 Pts
64-Core
OC Multi Core Mixed Speed
1213 Pts Much faster OC 64-core speed.
+69%
719 Pts
Market Share
Based on 21,816,548 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.98 % Hugely higher market share.
+98%
1 %
Value
Value For Money
86.4 % 98.3 % Slightly better value.
+14%
User Rating
UBM User Rating
142 % 171 % More popular.
+20%
Price
Price (score)
$367 $148 Much cheaper.
+60%
Age
Newest
25 Months 9 Months Much more recent.
+64%
TDP
Thermal Design Power (TDP)
95 Watts 65 Watts Much more energy efficient.
+32%
Cores
CPU Processing Cores
6 cores 6 cores
Threads
CPU Processing Threads
12 threads Hugely higher thread count.
+100%
6 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.7 GHz Faster base frequency.
+28%
2.9 GHz
Turbo Clock
Turbo Clock Speed
4.7 GHz Slightly faster turbo frequency.
+15%
4.1 GHz
Series
CPU Architecture
Coffee Lake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 None
Launch Date
Launch Date
Q4'17 Q1'19
Cache
Cache
12 MB 9 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2015C (65W)
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 128 GB
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
TSX-NI
Intel® TSX-NI
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
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

Intel’s Core i5-9400F is a hex-core 9th generation Coffee Lake desktop processor. It features base / boost clocks of 2.9 / 4.1 GHz, 9 MB of cache, a 65W TDP and it ships with a cooler but it does not have integrated graphics like the “non-F” variants. Although the 9400F is compatible with the enthusiast grade Z390 chipset it is normally paired with a better value for money B360 motherboard. At its launch the i5-9400F retailed for $180 but prices have dropped to a point that it now represents an excellent value proposition to gamers. Comparing the i5-9400F to the Ryzen 3600 shows that the 3600 is 8% better for quad-core processing but it costs 40% ($50) more than the 9400F. Ordinarily higher quad-core performance would result in better gaming but the Ryzen 3000 memory controller, although significantly improved over previous Ryzen iterations, still has limited bandwidth and high latency. Gamers can invest the $50 savings in a better GPU, for example by upgrading from an AMD RX 570 to an RX 580. Since the GPU makes the most difference to gaming, the end result is a system which offers far superior real world gaming performance for similar money. For those gamers who demand the best of the best, it is necessary to jump to one of the higher frequency SKUs such as the 9600K but for everyone else the i5-9400F offers unparalleled value. [Aug '19 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) November 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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  • - CPU tests include: integer, floating and string.
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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
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  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-9400F $148Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $45
Intel Core i5-9600K $210AMD RX 5700 $370Samsung 850 Evo 120GB $150
Intel Core i7-9700K $340AMD RX 590 $186Samsung 860 Evo 250GB $51
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $85Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Ultra Fit 32GB $14
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