Core i5-6400 vs Core Ultra 9 285K
The Core i5-6400 is much slower than the Core Ultra 9 285K on average across 100+ games. However, it's a better value for money, as it's $318.54 cheaper!
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 9 285K has a 37% higher base clock.
LGA1151
Sockethelp
LGA1851Skylake
Codenamehelp
Arrow Lake-SDesktop
Segmenthelp
DesktopHD Graphics 530
Integrated GPUhelp
Arc Xe-LPG Graphics 64EU2133 MHz (DDR4)
RAMhelp
6400 MHz (DDR5)Not Overclockable
Overclock Supporthelp
OverclockableFrequently Asked Questions
compare_arrowsWhich is better, Core i5-6400 or Core Ultra 9 285K?expand_more
The Core Ultra 9 285K. It's 252% faster than the Core i5-6400 on average across 100+ games, scoring 74/100 vs 21/100 in our gaming rating.
speedHow much faster is Core Ultra 9 285K than Core i5-6400?expand_more
252% 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 i5-6400 or Core Ultra 9 285K?expand_more
The Core Ultra 9 285K is faster at both resolutions. Toggle the resolution selector above to see per-game FPS.
paidIs the Core Ultra 9 285K worth buying in 2026?expand_more
It scores 74/100 in our gaming rating, faster than most CPUs on the market. Good buy if the price is right.
differenceWhat is the difference between Core i5-6400 and Core Ultra 9 285K?expand_more
Performance: Core i5-6400 scores 21/100, Core Ultra 9 285K scores 74/100. They also differ in core count, clock speeds, L3 cache, and power draw. Full breakdown in the specs section above.
compressWill the Core i5-6400 or Core Ultra 9 285K 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 i5-6400 or Core Ultra 9 285K?expand_more
The Core Ultra 9 285K is the stronger pick at 74/100. Compare your current CPU against it to see the exact FPS gain across 100+ games.