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Intel
IntelBX80684I99900KS
▲ 53336 ▼
  

4 Cores, 8 Threads @2.93 GHz, Lynnfield.
Release date ≈ Q1 2015.

VS
▲ 573,638 ▼
  

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

Effective Speed 
+44%
Real World Speed
Performance profile from 21,570 user samples
Benchmark your CPU here
8,730 User Benchmarks
Best Bench: 78% Base clock 3.8 GHz, turbo 4.1 GHz (avg)
Worst Bench: 58% Base clock 2.8 GHz, turbo 1.15 GHz (avg)
Poor: 58% Great: 78%
SPEED RANK: 449th / 1468
Gaming
Gaming 69%
Battle cruiser
Desktop
Desktop 72%
Battleship
Workstation
Workstation 52%
Yacht
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: 99th / 1468
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 100%
Nuclear submarine
Workstation
Workstation 99%
Nuclear submarine
Effective Speed
Effective CPU Speed 		68.7 % 98.8 % Much faster effective speed.
+44%
Average Score 
+94%
Memory
Avg. Memory Latency 		89.4 Pts 92.8 Pts +4%
1-Core
Avg. Single Core Speed 		80.4 Pts 147 Pts Hugely faster single-core speed.
+83%
2-Core
Avg. Dual Core Speed 		153 Pts 289 Pts Hugely faster dual-core speed.
+89%
4-Core
Avg. Quad Core Speed 		264 Pts 563 Pts Hugely faster quad-core speed.
+113%
8-Core
Avg. Octa Core Speed 		364 Pts 1,016 Pts Hugely faster octa-core speed.
+179%
Overclocked Score 
+72%
Memory
OC Memory Latency 		96.3 Pts 97.7 Pts +1%
1-Core
OC Single Core Speed 		97.2 Pts 155 Pts Much faster OC single-core speed.
+59%
2-Core
OC Dual Core Speed 		186 Pts 308 Pts Much faster OC dual-core speed.
+66%
4-Core
OC Quad Core Speed 		331 Pts 614 Pts Hugely faster OC quad-core speed.
+85%
8-Core
OC Octa Core Speed 		463 Pts 1,148 Pts Hugely faster OC octa-core speed.
+148%
Value & Sentiment 
+∞%
Market Share
Based on 69,026,464 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.06 % Insanely higher market share.
+∞%
User Rating
UBM User Rating 		53 % 57 % Slightly more popular.
+8%
Nice To Haves 
+207%
Age
Newest 		116+ Months 61+ Months Much more recent.
+47%
64-Core
OC Multi Core Speed 		465 Pts 1,664 Pts Hugely faster OC 64-core speed.
+258%
64-Core
Avg. Multi Core Speed 		368 Pts 1,531 Pts Hugely faster 64-core speed.
+316%
Specifications 
Launch Date
Launch Date 		Q3'09 Q4'19
Cache
Cache 		8 MB SmartCache 16 MB Intel® Smart Cache
Instruction Set Extensions
Instruction Set Extensions 		SSE4.2 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Lithography
Lithography 		45 nm 14 nm
Max Turbo Frequency
Max Turbo Frequency 		3.6 GHz 5.00 GHz
Bus Speed
Bus Speed 		2.5 GT/s DMI 8 GT/s
Max Memory Size
Max Memory Size (dependent on memory type) 		32 GB 128 GB
Memory Types
Memory Types 		DDR3 800/1066/1333 DDR4-2666
Memory Bandwidth
Max Memory Bandwidth 		21 GB/s 41.6 GB/s
ECC Memory Supported
ECC Memory Supported ‡ 		Yes No
Thermal Monitoring Technologies
Thermal Monitoring Technologies 		No Yes
Turbo Boost Tech
Intel® Turbo Boost Technology ‡ 		1.0 2
AES New Instructions
Intel® AES New Instructions 		No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡ 		Yes No
PCI Express Revision
PCI Express Revision 		2.0 3
PCI Express Configurations
PCI Express Configurations ‡ 		1x16, 2x8, 4x4 Up to 1x16, 2x8, 1x8+2x4

More specs » More specs »
Conclusion 
Average Bench 68.7%
Average Bench 98.8%

It's the best performer for the old, old Socket H1/LGA 1156, and it's useful for turning an old SFF (let's say, like an HP Compaq Elite 8100), into a gaming system (if you're insane enough), or into a little server useful for small things like Minecraft! It's a great buy if you want to modernize a LGA 1156 system since it's around $15 today. Just remember it doesn't have integrated graphics. [Dec '19 Raceplays]

MORE DETAILS

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

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