IntelBX80684I78700K
IntelBX80684I59400F

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

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

Real World Speed
Performance profile from 544,424 user samples
454,731 User Benchmarks
Best Bench: 105% Base clock 3.7 GHz, turbo 5.2 GHz (avg)
Worst Bench: 84% Base clock 3.7 GHz, turbo 4.3 GHz (avg)
Poor: 84% Great: 105%
SPEED RANK: 19th / 1241
Gaming
Gaming 95%
Nuclear submarine
Desktop
Desktop 96%
Nuclear submarine
Workstation
Workstation 86%
Aircraft carrier
89,693 User Benchmarks
Best Bench: 92% Base clock 4.1 GHz
Worst Bench: 79% Base clock 2.9 GHz, turbo 0.8 GHz (avg)
Poor: 79% Great: 92%
SPEED RANK: 42nd / 1241
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 73%
Battleship
Effective Speed
Effective CPU Speed
94.8 % Slightly faster effective speed.
+7%
88.3 %
Memory
Avg. Memory Latency
94 Pts +3% 91.5 Pts
1-Core
Avg. Single Core Mixed Speed
136 Pts Faster single-core speed.
+14%
119 Pts
2-Core
Avg. Dual Core Mixed Speed
267 Pts Faster dual-core speed.
+14%
235 Pts
4-Core
Avg. Quad Core Mixed Speed
514 Pts Faster quad-core speed.
+12%
460 Pts
8-Core
Avg. Octa Core Mixed Speed
832 Pts Faster octa-core speed.
+27%
657 Pts
Memory
OC Memory Latency
97.8 Pts +2% 95.8 Pts
1-Core
OC Single Core Mixed Speed
154 Pts Faster OC single-core speed.
+23%
125 Pts
2-Core
OC Dual Core Mixed Speed
306 Pts Faster OC dual-core speed.
+23%
248 Pts
4-Core
OC Quad Core Mixed Speed
606 Pts Faster OC quad-core speed.
+24%
489 Pts
8-Core
OC Octa Core Mixed Speed
976 Pts Much faster OC octa-core speed.
+36%
716 Pts
Market Share
Based on 28,734,969 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.44 % Higher market share.
+13%
1.28 %
Value
Value For Money
89 % 102 % Better value.
+14%
User Rating
UBM User Rating
174 % 211 % More popular.
+21%
Price
Price (score)
$350 $165 Much cheaper.
+53%
Age
Newest
31 Months 15 Months Much more recent.
+52%
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 Faster turbo frequency.
+15%
4.1 GHz
64-Core
OC Multi Core Mixed Speed
1212 Pts Much faster OC 64-core speed.
+69%
718 Pts
64-Core
Avg. Multi Core Mixed Speed
1039 Pts Much faster 64-core speed.
+57%
662 Pts
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 the point ($135) 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 a 2060S to a 2070S. 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) May 2020 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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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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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
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  • - Share your opinion by voting.

 Frequently Asked Questions

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The Best.
CPUGPUSSD
Intel Core i5-9400F $165Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9600K $199Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $365Nvidia RTX 2070S (Super) $500Samsung 850 Pro 512GB $240
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Ultra Fit 32GB $16
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