HowManyFPS Desktop App v1.28.0Track Bottlenecks and Boost Your FPSOpen HowManyFPS.com on your PC to benchmark

CPU Comparison: FPS, Specs & Value

Core i7-5775R vs Xeon E5-2666 v3

The Core i7-5775R is slightly faster than the Xeon E5-2666 v3 on average across 100+ games. We cannot compare value as at least one CPU is out of stock.

bar_chartBenchmarks groupCommunity calculateFPS Calculator compressBottleneck Calculator

CPU

View All CPUs

Up to 7% faster on average across 100+ games
Is 6 months newer
Available for $384

CPU

View All CPUs

FPS Comparison Across Popular Games

Predicted average FPS at 1080p, 1440p, and 4K, based on real game benchmarks.

Resolution

Quality

Paired GPU

View Compare All GPUs

Select GPU

Fortnite2017

Core i7-5775R

326FPS

Xeon E5-2666 v3

325FPS

Overwatch 22023

Core i7-5775R

518FPS

Xeon E5-2666 v3

517FPS

League of Legends2009

Core i7-5775R

203FPS

Xeon E5-2666 v3

190FPS

Grand Theft Auto V2013

Core i7-5775R

202FPS

Xeon E5-2666 v3

200FPS

Minecraft2011

Core i7-5775R

608FPS

Xeon E5-2666 v3

599FPS

Valorant2020

580FPS

571FPS

513FPS

494FPS

Destiny 22017

Core i7-5775R

Xeon E5-2666 v3

Specs & Benchmark Comparison

Side-by-side specs, synthetic benchmarks, and key hardware differences.

Scorehelp

Core i7-5775R

24%

Xeon E5-2666 v3

31%

Xeon E5-2666 v3 ranks 7 points higher.

Coreshelp

Core i7-5775R

Xeon E5-2666 v3

Xeon E5-2666 v3 has 6 more cores.

Threadshelp

Core i7-5775R

Xeon E5-2666 v3

Xeon E5-2666 v3 has 12 more threads.

L3 Cachehelp

Core i7-5775R

6 MB

Xeon E5-2666 v3

25 MB

Xeon E5-2666 v3 has 19 MB more L3 cache.

Base Frequencyhelp

Core i7-5775R

3.3 GHz

Xeon E5-2666 v3

2.9 GHz

Core i7-5775R has a 14% higher base clock.

Turbo Frequencyhelp

Core i7-5775R

3.8 GHz

Xeon E5-2666 v3

3.5 GHz

Core i7-5775R boosts 9% higher.

TDPhelp

Core i7-5775R

65W

Xeon E5-2666 v3

135W

Core i7-5775R draws 70W less power.

Pricehelp

Core i7-5775R

Xeon E5-2666 v3

Core i7-5775RXeon E5-2666 v3

Intel BGA 1364

Sockethelp

LGA2011-3

Broadwell

Codenamehelp

Haswell-EP

Desktop

Segmenthelp

Server/Workstation

Iris Pro Graphics 6200

Integrated GPUhelp

No Integrated Graphics

1866 MHz (DDR3)

RAMhelp

2133 MHz (DDR3), 2133 MHz (DDR4)

Not Overclockable

Overclock Supporthelp

Not Overclockable

Frequently Asked Questions

compare_arrowsWhich is better, Core i7-5775R or Xeon E5-2666 v3?expand_more

The Core i7-5775R. It's 29% faster than the Xeon E5-2666 v3 on average across 100+ games, scoring 24/100 vs 31/100 in our gaming rating.

speedHow much faster is Core i7-5775R than Xeon E5-2666 v3?expand_more

29% 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 i7-5775R or Xeon E5-2666 v3?expand_more

The Core i7-5775R is faster at both resolutions. Toggle the resolution selector above to see per-game FPS.

paidIs the Core i7-5775R worth buying in 2026?expand_more

It scores 24/100 in our gaming rating, faster than most CPUs on the market. Good buy if the price is right.

differenceWhat is the difference between Core i7-5775R and Xeon E5-2666 v3?expand_more

Performance: Core i7-5775R scores 24/100, Xeon E5-2666 v3 scores 31/100. They also differ in core count, clock speeds, L3 cache, and power draw. Full breakdown in the specs section above.

compressWill the Core i7-5775R or Xeon E5-2666 v3 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 i7-5775R or Xeon E5-2666 v3?expand_more

The Core i7-5775R is the stronger pick at 24/100. Compare your current CPU against it to see the exact FPS gain across 100+ games.