Rust
4K@165Hz·05:13 played
LiamLewis·1h ago
Public
261
FPSAverage
204
FPS1% Low
76%/45°C
77%/48°C
32 GB
72%usage
Core i5-8400 vs Core Ultra 5 245KF
The Core i5-8400 is quite a bit slower than the Core Ultra 5 245KF on average across 100+ games and it's also a worse value for money, as it's only $44.20 cheaper!
Core i5-840027% Score
- Up to 62% cheaper – $144.80 vs $189.00
Core Ultra 5 245KF69% Score
- Up to 87% faster on average across 100+ games
- Is 7 years and 2 months newer
- Up to 16% better value for money
- Up to 62% more expensive – $189.00 vs $144.80
FPS Comparison Across Popular Games
Predicted average FPS at 1080p, 1440p, and 4K, based on real game benchmarks.
Specs & Benchmark Comparison
Side-by-side specs, synthetic benchmarks, and key hardware differences.
Base Frequencyhelp
Core Ultra 5 245KF has a 50% higher base clock.
LGA1151
Sockethelp
LGA1851Coffee Lake
Codenamehelp
Arrow Lake-SDesktop
Segmenthelp
DesktopUHD Graphics 630
Integrated GPUhelp
No Integrated Graphics2666 MHz (DDR4)
RAMhelp
6400 MHz (DDR5)Not Overclockable
Overclock Supporthelp
OverclockableFrequently Asked Questions
compare_arrowsWhich is better, Core i5-8400 or Core Ultra 5 245KF?expand_more
The Core Ultra 5 245KF. It's 156% faster than the Core i5-8400 on average across 100+ games, scoring 69/100 vs 27/100 in our gaming rating.
speedHow much faster is Core Ultra 5 245KF than Core i5-8400?expand_more
156% faster on average. The gap varies by game and resolution, check the per-game FPS comparison above.
aspect_ratioWhich is better for 1440p and 4K gaming, Core i5-8400 or Core Ultra 5 245KF?expand_more
The Core Ultra 5 245KF is faster at both resolutions. Toggle the resolution selector above to see per-game FPS.
paidIs the Core Ultra 5 245KF worth buying in 2026?expand_more
It scores 69/100 in our gaming rating, faster than most CPUs on the market. Good buy if the price is right.
differenceWhat is the difference between Core i5-8400 and Core Ultra 5 245KF?expand_more
Performance: Core i5-8400 scores 27/100, Core Ultra 5 245KF scores 69/100. They also differ in core count, clock speeds, L3 cache, and power draw. Full breakdown in the specs section above.
compressWill the Core i5-8400 or Core Ultra 5 245KF bottleneck my PC?expand_more
Depends on the rest of your build, especially your GPU. Swap the paired GPU in the FPS section above to see if it limits performance, or use our bottleneck calculator for a full analysis.
upgradeIs it worth upgrading to the Core i5-8400 or Core Ultra 5 245KF?expand_more
The Core Ultra 5 245KF is the stronger pick at 69/100. Compare your current CPU against it to see the exact FPS gain across 100+ games.
Popular Comparisons
i5-8400 vs Ryzen 7 7800X3Di5-8400 vs Ryzen 7 9700Xi5-8400 vs Ryzen 9 9900Xi5-8400 vs Ryzen 7 7700Xi5-8400 vs Ryzen 5 5500i5-8400 vs Ultra 7 265KFi5-8400 vs Ryzen 7 9850X3Di5-8400 vs Ryzen 5 7600Xi5-8400 vs Ultra 5 245Ki5-8400 vs Ultra 7 270K Plusi5-8400 vs Ryzen 5 8500Gi5-8400 vs Ryzen 5 4500i5-8400 vs i3-12100Fi5-8400 vs Ryzen 5 7500X3Di5-8400 vs i3-7100Ti5-8400 vs i5-4670i5-8400 vs Ryzen 5 3500Xi5-8400 vs Ryzen 5 5600i5-8400 vs i5-4440SUltra 5 245KF vs Ryzen 7 7800X3DUltra 5 245KF vs Ryzen 7 9700XUltra 5 245KF vs Ryzen 9 9900XUltra 5 245KF vs Ryzen 7 7700XUltra 5 245KF vs Ryzen 5 5500Ultra 5 245KF vs Ultra 7 265KFUltra 5 245KF vs Ryzen 7 9850X3DUltra 5 245KF vs Ryzen 5 7600XUltra 5 245KF vs Ultra 5 245KUltra 5 245KF vs Ultra 7 270K PlusUltra 5 245KF vs Ryzen 5 8500GUltra 5 245KF vs Ryzen 5 4500Ultra 5 245KF vs i3-12100FUltra 5 245KF vs Ryzen 5 7500X3DUltra 5 245KF vs i3-7100TUltra 5 245KF vs i5-4670Ultra 5 245KF vs Ryzen 5 3500XUltra 5 245KF vs Ryzen 5 5600Ultra 5 245KF vs i5-4440S