Core 2 Duo E8400 vs Core Ultra 7 265F
The Core 2 Duo E8400 is slightly slower than the Core Ultra 7 265F on average across 100+ games. We cannot compare value as at least one CPU is out of stock.
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 2 Duo E8400 has a 25% higher base clock.
LGA775
Sockethelp
LGA1851Wolfdale
Codenamehelp
Arrow Lake-SDesktop
Segmenthelp
DesktopNo Integrated Graphics
Integrated GPUhelp
No Integrated GraphicsDDR1, DDR2, DDR3
RAMhelp
6400 MHz (DDR5)Not Overclockable
Overclock Supporthelp
Not OverclockableFrequently Asked Questions
compare_arrowsWhich is better, Core 2 Duo E8400 or Core Ultra 7 265F?expand_more
The Core Ultra 7 265F. It's 26% faster than the Core 2 Duo E8400 on average across 100+ games, scoring 59/100 vs 47/100 in our gaming rating.
speedHow much faster is Core Ultra 7 265F than Core 2 Duo E8400?expand_more
26% 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 2 Duo E8400 or Core Ultra 7 265F?expand_more
The Core Ultra 7 265F is faster at both resolutions. Toggle the resolution selector above to see per-game FPS.
paidIs the Core Ultra 7 265F worth buying in 2026?expand_more
It scores 59/100 in our gaming rating, faster than most CPUs on the market. Good buy if the price is right.
differenceWhat is the difference between Core 2 Duo E8400 and Core Ultra 7 265F?expand_more
Performance: Core 2 Duo E8400 scores 47/100, Core Ultra 7 265F scores 59/100. They also differ in core count, clock speeds, L3 cache, and power draw. Full breakdown in the specs section above.
compressWill the Core 2 Duo E8400 or Core Ultra 7 265F 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 2 Duo E8400 or Core Ultra 7 265F?expand_more
The Core Ultra 7 265F is the stronger pick at 59/100. Compare your current CPU against it to see the exact FPS gain across 100+ games.
Popular Comparisons
2 Duo E8400 vs Ryzen 7 7800X3D2 Duo E8400 vs Ryzen 5 7600X2 Duo E8400 vs Ryzen 9 9950X3D2 Duo E8400 vs Ryzen 7 7700X2 Duo E8400 vs Ryzen 9 9900X2 Duo E8400 vs Ryzen 7 9850X3D2 Duo E8400 vs Ryzen 7 9700X2 Duo E8400 vs Ryzen 5 8500G2 Duo E8400 vs Ultra 7 265KF2 Duo E8400 vs Ryzen 9 9900X3D2 Duo E8400 vs i3-12100F2 Duo E8400 vs Ryzen 5 7500X3DAtom D510 vs 2 Duo E8400Athlon II X2 240 vs 2 Duo E84002 Duo E8400 vs Ryzen 7 9800X3D2 Duo E8400 vs Pentium E54002 Duo E8400 vs Ultra 5 245K2 Duo E8400 vs Ultra 5 245KFUltra 7 265F vs Ryzen 7 7800X3DUltra 7 265F vs Ryzen 5 7600XUltra 7 265F vs Ryzen 9 9950X3DUltra 7 265F vs Ryzen 7 7700XUltra 7 265F vs Ryzen 9 9900XUltra 7 265F vs Ryzen 7 9850X3DUltra 7 265F vs Ryzen 7 9700XUltra 7 265F vs Ryzen 5 8500GUltra 7 265F vs Ultra 7 265KFUltra 7 265F vs Ryzen 9 9900X3Di3-12100F vs Ultra 7 265FUltra 7 265F vs Ryzen 5 7500X3DAtom D510 vs Ultra 7 265FAthlon II X2 240 vs Ultra 7 265FUltra 7 265F vs Ryzen 7 9800X3DUltra 7 265F vs Pentium E5400Ultra 5 245K vs Ultra 7 265FUltra 5 245KF vs Ultra 7 265F