IntelBX80684I99900K
IntelBX80684I78700K

8 Cores, 16 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2018.

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

CSGO
Dust 2 1080p Max
298 EFps +5% 284 EFps
GTAV
Franklin & Lamar 1080p Max
108 EFps +2% 106 EFps
Overwatch
Temple of Anubis 1080p Max
138 EFps 139 EFps +1%
PUBG
M249 Training 1080p Max
137 EFps 139 EFps +1%
Fortnite
UserBenchmark Island 1080p Max
149 EFps Slightly Better Fortnite EFps.
+7%
139 EFps
Real World Speed
Performance profile from 759,061 user samples
262,042 User Benchmarks
Best Bench: 105% Base clock 3.6 GHz, turbo 5.15 GHz (avg)
Worst Bench: 87% Base clock 3.6 GHz, turbo 4.5 GHz (avg)
Poor: 87% Great: 105%
SPEED RANK: 11th / 1272
Gaming
Gaming 98%
Nuclear submarine
Desktop
Desktop 99%
Nuclear submarine
Workstation
Workstation 98%
Nuclear submarine
497,019 User Benchmarks
Best Bench: 104% Base clock 3.7 GHz, turbo 5.05 GHz (avg)
Worst Bench: 80% Base clock 3.7 GHz, turbo 0.9 GHz (avg)
Poor: 80% Great: 104%
SPEED RANK: 23rd / 1272
Gaming
Gaming 93%
Nuclear submarine
Desktop
Desktop 95%
Nuclear submarine
Workstation
Workstation 85%
Aircraft carrier
Effective Speed
Effective CPU Speed
98.2 % Slightly faster effective speed.
+5%
93.5 %
Memory
Avg. Memory Latency
93.3 Pts +1% 92.4 Pts
1-Core
Avg. Single Core Mixed Speed
143 Pts Slightly faster single-core speed.
+6%
135 Pts
2-Core
Avg. Dual Core Mixed Speed
283 Pts Slightly faster dual-core speed.
+7%
265 Pts
4-Core
Avg. Quad Core Mixed Speed
553 Pts Slightly faster quad-core speed.
+9%
509 Pts
8-Core
Avg. Octa Core Mixed Speed
1016 Pts Faster octa-core speed.
+23%
824 Pts
Memory
OC Memory Latency
97.6 Pts 97.6 Pts
1-Core
OC Single Core Mixed Speed
154 Pts 154 Pts
2-Core
OC Dual Core Mixed Speed
308 Pts +0% 307 Pts
4-Core
OC Quad Core Mixed Speed
609 Pts +0% 607 Pts
8-Core
OC Octa Core Mixed Speed
1162 Pts Faster OC octa-core speed.
+19%
973 Pts
Market Share
Based on 34,512,126 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.39 % 1.48 % Slightly higher market share.
+6%
Value
Value For Money
89.1 % 93.4 % +5%
User Rating
UBM User Rating
158 % 158 %
Price
Price (score)
$395 $279 Cheaper.
+29%
Age
Newest
24 Months Much more recent.
+33%
36 Months
TDP
Thermal Design Power (TDP)
95 Watts 95 Watts
Cores
CPU Processing Cores
8 cores Much higher core count.
+33%
6 cores
Threads
CPU Processing Threads
16 threads Much higher thread count.
+33%
12 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.6 GHz 3.7 GHz +3%
Turbo Clock
Turbo Clock Speed
5 GHz Slightly faster turbo frequency.
+6%
4.7 GHz
64-Core
OC Multi Core Mixed Speed
1615 Pts Much faster OC 64-core speed.
+34%
1208 Pts
64-Core
Avg. Multi Core Mixed Speed
1465 Pts Much faster 64-core speed.
+43%
1026 Pts
Series
CPU Architecture
Coffee Lake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 UHD 630
Launch Date
Launch Date
Q4'18 Q4'17
Cache
Cache
16 MB SmartCache 12 MB
Instruction Set Extensions
Instruction Set Extensions
Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$488.00 - $499.00 N/A
Max Turbo Frequency
Max Turbo Frequency
5.00 GHz 4.70 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (130W)
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »
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The Intel i9-9900K is an 8 core, 16 thread, unlocked 9th generation Coffee Lake processor. It has a base / boost clocks of 3.6 / 4.7 GHz and a single-core boost of 5.0 GHz (the highest frequency achieved yet from this class of Intel CPU). It features 16 MB of cache, a 95W TDP and Intel UHD 630 graphics. The 9900K is compatible with the new Z390 chipset, and subject to a BIOS update, is also compatible with the older Z370 chipset. Aimed at users who do not wish to compromise, the i9-9900K offers the best gaming and desktop experience available at any price. Heavy workstation users should consider the Ryzen 9 3900X which is similarly priced. Comparing the overclocked 3900X shows that it is just 10% worse for gaming and desktop (sub octa-core) but around 40% better for 64-core computations. Gamers should consider the 9700K which offers identical overclocked gaming performance at a $100 USD discount. [Oct '18 CPUPro]

MORE DETAILS

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

Processor Rankings (Price vs Performance) October 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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  • - 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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  • - Explore your best upgrade options with a virtual PC build.
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HDDRAMUSB
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