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IntelBX80684I99900KS
IntelBX80677I77740X
▲ 561,719 ▼
  

8 Cores, 16 Threads @4.00 GHz, 127 W.
Release date ≈ Q4 2019.

VS
▲ 53240 ▼

4 Cores, 8 Threads @4.30 GHz, Kaby Lake.
Release date ≈ Q3 2017.

Effective Speed 
+14%
Real World Speed
Performance profile from 17,934 user samples
Benchmark your CPU here
12,840 User Benchmarks
Best Bench: 105% Base clock 4 GHz, turbo 5.1 GHz (avg)
Worst Bench: 89% Base clock 4 GHz, turbo 5 GHz (avg)
Poor: 89% Great: 105%
SPEED RANK: 82nd / 1442
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 100%
Nuclear submarine
Workstation
Workstation 99%
Nuclear submarine
5,094 User Benchmarks
Best Bench: 96% Base clock 4.3 GHz, turbo 5.15 GHz (avg)
Worst Bench: 74% Base clock 4.3 GHz, turbo 1 GHz (avg)
Poor: 74% Great: 96%
SPEED RANK: 160th / 1442
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 91%
Nuclear submarine
Workstation
Workstation 74%
Battleship
Effective Speed
Effective CPU Speed 		98.8 % Faster effective speed.
+14% 		87 %
Average Score 
+20%
Memory
Avg. Memory Latency 		92.8 Pts +3% 90.5 Pts
1-Core
Avg. Single Core Speed 		147 Pts Faster single-core speed.
+11% 		133 Pts
2-Core
Avg. Dual Core Speed 		289 Pts Faster dual-core speed.
+15% 		252 Pts
4-Core
Avg. Quad Core Speed 		563 Pts Faster quad-core speed.
+25% 		451 Pts
8-Core
Avg. Octa Core Speed 		1016 Pts Much faster octa-core speed.
+45% 		699 Pts
Overclocked Score 
+13%
Memory
OC Memory Latency 		97.7 Pts +1% 96.7 Pts
1-Core
OC Single Core Speed 		155 Pts +3% 151 Pts
2-Core
OC Dual Core Speed 		308 Pts Slightly faster OC dual-core speed.
+5% 		293 Pts
4-Core
OC Quad Core Speed 		614 Pts Faster OC quad-core speed.
+15% 		532 Pts
8-Core
OC Octa Core Speed 		1148 Pts Much faster OC octa-core speed.
+40% 		819 Pts
Value & Sentiment 
+3%
Market Share
Based on 67,713,620 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % 0.02 %
User Rating
UBM User Rating 		56 % Slightly more popular.
+6% 		53 %
Nice To Haves 
+84%
Age
Newest 		54+ Months Much more recent.
+33% 		81+ Months
64-Core
OC Multi Core Speed 		1664 Pts Hugely faster OC 64-core speed.
+102% 		824 Pts
64-Core
Avg. Multi Core Speed 		1531 Pts Hugely faster 64-core speed.
+116% 		710 Pts
Specifications 
Launch Date
Launch Date 		Q4'19 Q2'17
Cache
Cache 		16 MB Intel® Smart Cache 8 MB
Instruction Set Extensions
Instruction Set Extensions 		Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 SSE4.1/4.2, AVX2
Max Turbo Frequency
Max Turbo Frequency 		5.00 GHz 4.50 GHz
Bus Speed
Bus Speed 		8 GT/s 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification 		PCG 2015D PCG 2017X
Max Memory Size
Max Memory Size (dependent on memory type) 		128 GB 64 GB
Processor Graphics
Processor Graphics ‡ 		Intel® UHD Graphics 630 None
Turbo Boost Tech
Intel® Turbo Boost Technology ‡ 		2 2.0
PCI Express Revision
PCI Express Revision 		3 3.0

More specs » More specs »
Conclusion 
Average Bench 98.8%
Average Bench 87%
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The Intel's specially binned i9-9900K, featuring 5GHz all core boost and base clock of 4GHz. This CPU is one of the most powerful Intel CPU in term of day-to-day and gaming performance but with TDP of 127W, bulky air cooler or 240mm AIO is recommended to make sure the CPU doesn't overheat, and open loop liquid cooling if you want to OC. [Jun '20 ColdSpy]

MORE DETAILS

Kaby Lake-X CPUs is probably one of the Intel's most embarrassing release ever for their HEDT platform. Requires X299 motherboard and only offered 16 PCIe lanes whilst being only little better than i7-7700K. [Oct '19 ColdSpy]

MORE DETAILS

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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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  • 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 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 value for money upgrades.

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  • - Reports are generated and presented on userbenchmark.com
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 Frequently Asked Questions

Processors FAQ
AMD vs Intel: Gaming performance 2012-2021
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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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