Core Ultra 7 265KF vs Xeon E5640
The Core Ultra 7 265KF is faster than the Xeon E5640 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 Ultra 7 265KF has a 46% higher base clock.
Turbo Frequencyhelp
Core Ultra 7 265KF boosts 88% higher.
LGA1851
Sockethelp
LGA1366Arrow Lake-S
Codenamehelp
Westmere-EPDesktop
Segmenthelp
Server/WorkstationNo Integrated Graphics
Integrated GPUhelp
No Integrated Graphics6400 MHz (DDR5)
RAMhelp
DDR3Overclockable
Overclock Supporthelp
Not OverclockableFrequently Asked Questions
compare_arrowsWhich is better, Core Ultra 7 265KF or Xeon E5640?expand_more
Neither, they're within 1% of each other across 100+ games. Pick based on price, availability, or platform compatibility.
aspect_ratioWhich is better for 1440p and 4K gaming, Core Ultra 7 265KF or Xeon E5640?expand_more
The Core Ultra 7 265KF is faster at both resolutions. Toggle the resolution selector above to see per-game FPS.
paidIs the Core Ultra 7 265KF worth buying in 2026?expand_more
It scores 66/100 in our gaming rating, faster than most CPUs on the market. Good buy if the price is right.
differenceWhat is the difference between Core Ultra 7 265KF and Xeon E5640?expand_more
Performance: Core Ultra 7 265KF scores 66/100, Xeon E5640 scores 66/100. They also differ in core count, clock speeds, L3 cache, and power draw. Full breakdown in the specs section above.
compressWill the Core Ultra 7 265KF or Xeon E5640 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 Ultra 7 265KF or Xeon E5640?expand_more
The Core Ultra 7 265KF is the stronger pick at 66/100. Compare your current CPU against it to see the exact FPS gain across 100+ games.
Popular Comparisons
Ultra 7 265KF vs Ryzen 7 7800X3DUltra 7 265KF vs Ryzen 5 7600XUltra 7 265KF vs Ryzen 9 9950X3DUltra 7 265KF vs Ryzen 7 7700XUltra 7 265KF vs Ryzen 9 9900XUltra 7 265KF vs Ryzen 7 9850X3DUltra 7 265KF vs Ryzen 7 9700XUltra 7 265KF vs Ryzen 5 8500GUltra 7 265KF vs Ryzen 9 9900X3Di3-12100F vs Ultra 7 265KFUltra 7 265KF vs Ryzen 5 7500X3DCeleron G1610 vs Ultra 7 265KFAthlon II X2 240 vs Ultra 7 265KFUltra 7 265KF vs Ryzen 7 9800X3DUltra 7 265KF vs Pentium E5400Ultra 5 245K vs Ultra 7 265KFUltra 5 245KF vs Ultra 7 265KFRyzen 7 7800X3D vs Xeon E5640Ryzen 5 7600X vs Xeon E5640Ryzen 9 9950X3D vs Xeon E5640Ryzen 7 7700X vs Xeon E5640Ryzen 9 9900X vs Xeon E5640Ryzen 7 9850X3D vs Xeon E5640Ryzen 7 9700X vs Xeon E5640Ryzen 5 8500G vs Xeon E5640Ryzen 9 9900X3D vs Xeon E5640i3-12100F vs Xeon E5640Ryzen 5 7500X3D vs Xeon E5640Celeron G1610 vs Xeon E5640Athlon II X2 240 vs Xeon E5640Ryzen 7 9800X3D vs Xeon E5640Pentium E5400 vs Xeon E5640Ultra 5 245K vs Xeon E5640Ultra 5 245KF vs Xeon E5640