Buy on Amazon
$265
In Stock
Availability
Availability
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AvailabilityMSRP in USD: $539
Availability
MSRP in USD: $539
Key Differences
In short — Core i9-11900K outperforms Core i3-8121U on the selected game parameters. We do not have the prices of both CPUs to compare value. The better performing Core i9-11900K is 1046 days newer than Core i3-8121U.
Advantages of Intel Core i3-8121U
- Consumes up to 88% less energy than Intel Core i9-11900K - 15 vs 125 Watts
Advantages of Intel Core i9-11900K
- Performs up to 11% better in DOOM Eternal than Core i3-8121U - 530 vs 477 FPS
- Can execute more multi-threaded tasks simultaneously than Intel Core i3-8121U - 16 vs 4 threads
- Works without a dedicated GPU, while Intel Core i3-8121U doesn't have integrated graphics
DOOM Eternal
Resolution
1920 x 1080
Game Graphics
Nightmare
Core i9-11900K
Desktop • Mar 16th, 2021
FPS
530
100%
Value, $/FPS
$0.5/FPS
100%
Price, $
$265
100%
FPS and Value Winner
Intel Core i9-11900K Desktop Processor 8 Cores up to 5.3 GHz Unlocked LGA1200 (Intel 500 Series & Select 400 Chipset) 125W
Buy for $265 on Amazon
In Stock
Updated 130 minutes ago
TOP 5 Games
Resolution
1920 x 1080
Game Graphics
Nightmare
Core i3-8121U
Mobile • May 5th, 2018
Core i9-11900K
Desktop • Mar 16th, 2021
Geekbench 5 Benchmarks
Intel Core i3-8121U | vs | Intel Core i9-11900K |
|---|---|---|
| May 5th, 2018 | Release Date | Mar 16th, 2021 |
| Core i3 | Collection | Core i9 |
| Cannon Lake | Codename | Rocket Lake |
| Intel BGA 1440 | Socket | Intel Socket 1200 |
Mobile | Segment | Desktop |
| 2 | Cores | 8 |
| 4 | Threads | 16 |
| 2.2 GHz | Base Clock Speed | 3.5 GHz |
| 3.2 GHz | Turbo Clock Speed | 5.3 GHz |
15 W | TDP | 125 W |
10 nm | Process Size | 14 nm |
| 22.0x | Multiplier | 35.0x |
| None | Integrated Graphics | UHD Graphics 750 |
| No | Overclockable | Yes |
Builds Using Core i3-8121U or Core i9-11900K
DOOM Eternal, 1920 x 1080, Nightmare
203 FPS
$10.44/FPS
GeForce RTX 3060
Core i9-11900K
16 GB, 2 TB SSD
Buy on Amazon
$2,119
In Stock
203 FPS
$9.35/FPS
GeForce RTX 3060
Core i9-11900K
64 GB, 2 TB SSD
Buy on Amazon
$1,898
In Stock
226 FPS
$8.75/FPS
GeForce RTX 4060
Core i9-11900K
32 GB, 512 GB SSD + 1 TB HDD
Buy on Amazon
$1,978
In Stock
351 FPS
$6.13/FPS
GeForce RTX 4070 SUPER
Core i9-11900K
64 GB, 1 TB SSD + 2 TB HDD
Buy on Amazon
$2,149.99
In Stock
203 FPS
$10.14/FPS
GeForce RTX 3060
Core i9-11900K
16 GB, 1 TB SSD
Buy on Amazon
$2,059
In Stock
203 FPS
$8.37/FPS
GeForce RTX 3060
Core i9-11900K
64 GB, 512 GB SSD
Buy on Amazon
$1,699
In Stock
173 FPS
$10.69/FPS
GeForce RTX 3050
Core i9-11900K
32 GB, 2 TB SSD
Buy on Amazon
$1,849
In Stock
311 FPS
$11.57/FPS
GeForce RTX 3080
Core i9-11900K
16 GB, 1 TB SSD + 2 TB HDD
Buy on Amazon
$3,599
In Stock
311 FPS
$10.93/FPS
GeForce RTX 3080
Core i9-11900K
16 GB, N/A Storage
Buy on Amazon
$3,399.99
In Stock
173 FPS
$10.69/FPS
GeForce RTX 3050
Core i9-11900K
64 GB, 1 TB SSD
Buy on Amazon
$1,849
In Stock
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