In Atomfall, the Core i5-8400T is slightly slower than the Core i9-9940X. However, it's a much better value for money, as it's $1176 cheaper!
Core i5-8400T
- Up to 91% cheaper – $113.37 vs $1288.88
- Up to 91% cheaper
- Up to 91% better value in Atomfall – $0.55 vs $5.99/FPS
- Up to 91% better value in Atomfall
- Consumes up to 79% less energy – 35 vs 165 Watts
- Consumes up to 79% less energy
- Can run games without a dedicated GPU using its integrated graphics
- Can run games without a dedicated GPU using its integrated graphics
Core i9-9940X
- Up to 5% faster in Atomfall – 215 vs 204 FPS
- Up to 5% faster in Atomfall
- Is 6 months and 17 days newer – Oct 19, 2018 vs Apr 02, 2018
- Is 6 months and 17 days newer
Atomfall FPS Calculator
Core i5-8400T vs Core i9-9940X: Comparison of performance and price
Core i5-8400T
Apr 2nd, 2018
Average FPS
204 FPS
95%
Min 1% FPS
153 FPS
95%
Price, $
$113.37
100%
Value, $/FPS
$0.55/FPS
100%
Core i9-9940X
Oct 19th, 2018
Average FPS
215 FPS
100%
Min 1% FPS
161 FPS
100%
Price, $
$1288.88
8%
Value, $/FPS
$5.99/FPS
9%
Synthetic Benchmarks
The Core i5-8400T vs Core i9-9940X in synthetic CPU benchmarks
Performance Specifications
The Core i5-8400T vs Core i9-9940X in core CPU performance specifications
Core i5-8400T
Apr 2nd, 2018
Cores
6-core
43%
L3 Cache
9 MB
47%
Base Frequency
1.7 GHz
52%
Turbo Frequency
3.3 GHz
73%
Max. DDR4 RAM Speed
2666 MHz
100%
Core i9-9940X
Oct 19th, 2018
Cores
14-core
100%
L3 Cache
19.25 MB
100%
Base Frequency
3.3 GHz
100%
Turbo Frequency
4.5 GHz
100%
Max. DDR4 RAM Speed
2666 MHz
100%
Specifications
Comparison of core specifications
Core i5-8400T Apr 2nd, 2018 | SpecificationsComparison of core specifications | Core i9-9940X Oct 19th, 2018 |
|---|---|---|
| General | ||
| Apr 2nd, 2018 | Released | Oct 19th, 2018 |
$182.00 | MSRP | $1,387.00 |
Desktop | Segment | Desktop |
| LGA1151 | Socket | LGA2066 |
35 W | Power Consumption | 165 W |
| Other Features | ||
| 2666 MHz (DDR4) | RAM | 2666 MHz (DDR4) |
UHD Graphics 630 | Integrated GPU | No Integrated Graphics |
| Not Overclockable | Overclock Support | Overclockable |
