Intel
IntelBX80684I99900K

6 Cores, 12 Threads @2 GHz, Sandy Bridge EP.
Release date ≤ Q1 2014.

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

Real World Speed
Performance profile from 330,706 user samples
2,390 User Benchmarks
Best Bench: 64% Base clock 2 GHz, turbo 2.25 GHz (avg)
Worst Bench: 50% Base clock 2 GHz, turbo 2.3 GHz (avg)
Poor: 50% Great: 64%
SPEED RANK: 496th / 1289
Gaming
Gaming 59%
Gunboat
Desktop
Desktop 60%
Gunboat
Workstation
Workstation 48%
Yacht
328,316 User Benchmarks
Best Bench: 105% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 85% Base clock 3.6 GHz, turbo 4.7 GHz (avg)
Poor: 85% Great: 105%
SPEED RANK: 12th / 1289
Gaming
Gaming 98%
Nuclear submarine
Desktop
Desktop 98%
Nuclear submarine
Workstation
Workstation 98%
Nuclear submarine
Effective Speed
Effective CPU Speed
59.4 % 97.9 % Much faster effective speed.
+65%
Memory
Avg. Memory Latency
77.5 Pts 93.1 Pts Lower memory latency.
+20%
1-Core
Avg. Single Core Mixed Speed
57.1 Pts 143 Pts Hugely faster single-core speed.
+150%
2-Core
Avg. Dual Core Mixed Speed
116 Pts 283 Pts Hugely faster dual-core speed.
+144%
4-Core
Avg. Quad Core Mixed Speed
224 Pts 551 Pts Hugely faster quad-core speed.
+146%
8-Core
Avg. Octa Core Mixed Speed
354 Pts 1012 Pts Hugely faster octa-core speed.
+186%
Memory
OC Memory Latency
83.6 Pts 97.5 Pts Lower OC memory latency.
+17%
1-Core
OC Single Core Mixed Speed
65.5 Pts 154 Pts Hugely faster OC single-core speed.
+135%
2-Core
OC Dual Core Mixed Speed
130 Pts 306 Pts Hugely faster OC dual-core speed.
+135%
4-Core
OC Quad Core Mixed Speed
250 Pts 608 Pts Hugely faster OC quad-core speed.
+143%
8-Core
OC Octa Core Mixed Speed
396 Pts 1165 Pts Hugely faster OC octa-core speed.
+194%
Market Share
Based on 40,329,903 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.02 % 1.26 % Insanely higher market share.
+6,200%
Value
Value For Money
54.2 % 90.2 % Much better value.
+66%
User Rating
UBM User Rating
51 % 82 % Much more popular.
+61%
Price
Price (score)
$386 $375 +3%
Age
Newest
83+ Months 28 Months Much more recent.
+66%
64-Core
OC Multi Core Mixed Speed
471 Pts 1613 Pts Hugely faster OC 64-core speed.
+242%
64-Core
Avg. Multi Core Mixed Speed
440 Pts 1450 Pts Hugely faster 64-core speed.
+230%
Launch Date
Launch Date
Q1'12 Q4'18
Cache
Cache
15 MB SmartCache 16 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
AVX Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Embedded Options Available
Embedded Options Available
Yes No
Lithography
Lithography
32 nm 14 nm
Recommended Price
Recommended Customer Price
$382.00 - $410.00 $488.00 - $499.00
Max Turbo Frequency
Max Turbo Frequency
2.5 GHz 5.00 GHz
Bus Speed
Bus Speed
7.2 GT/s QPI 8 GT/s DMI3
Scalability
Scalability
2S Only 1S Only
Max Memory Size
Max Memory Size (dependent on memory type)
384 GB 64 GB
Memory Types
Memory Types
DDR3 800/1066/1333 DDR4-2666
Memory Channels
Max # of Memory Channels
4 2
Memory Bandwidth
Max Memory Bandwidth
42.6 GB/s 41.6 GB/s
ECC Memory Supported
ECC Memory Supported ‡
Yes No
Package Size
Package Size
52.5mm x 45.0mm 37.5mm x 37.5mm
Max CPU Configuration
Max CPU Configuration
2 1
Turbo Boost Tech
Intel® Turbo Boost Technology ‡
1.0 2.0
Identity Protection Tech
Intel® Identity Protection Technology ‡
No Yes
Max # of PCI Express Lanes
Max # of PCI Express Lanes
40 16

More specs » More specs »
ADVERTISEMENT

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

Processor Rankings (Price vs Performance) February 2021 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]

ADVERTISEMENT

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.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

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.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-10400F $143Nvidia RTX 3060-Ti $400Crucial MX500 250GB $48
Intel Core i5-10600K $230Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i7-10700K $326Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $40
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $73SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback