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Intel logo Core i7-875K
versus
Intel logo Core i5-661

Intel Core i7-875K logo Intel Core i5-661 logo
General information Core i7-875K Core i5-661
Launched Q2 2010 Q1 2010
Used in Desktop Desktop
Factory Intel Intel
Socket LGA1156 LGA1156
Series Name Intel Core i7 Intel Core i5
Core Family Name Lynnfield Clarkdale
Clock 2.9 GHz 12.1 % 3.3 GHz 0 %
Turbo Clock 3.6 GHz 0 % 3.6 GHz 0 %
Cores 4 0 % 2 50 %
Threads 8 0 % 4 50 %
Thermal Design Power (TDP) 95 W 0 % 87 W 8.4 %
Lithography 45 nm 0 % 32 nm 28.9 %
L1 Cache 4 × 32 kB Instruction
4 × 32 kB Data
2 × 32 kB Instruction
2 × 32 kB Data
L2 Cache 4 × 256 kB
2 × 256 kB
L3 Cache 1 × 8 MB
1 × 4 MB
ECC Supported No No
Multithreading Supported Yes Yes
Performance Core i7-875K Core i5-661
Overall Score 37606 0 % 35510 5.6 %
Future Proof 18 % 0 % 17 % 5.6 %
Benchmark Score 2000 0 % 1590 20.5 %
Single Thread Score 1334.6 7.9 % 1449.6 0 %
Encrypting Data 4557.2 MB/s 0 % 3608.6 MB/s 20.8 %
Compressing Data 66.7 MB/s 0 % 37.7 MB/s 43.5 %
String objects sorting 9222.5 thousand/s 0 % 5375.4 thousand/s 41.7 %
Prime numbers generation 22.2 millions/s 0 % 11 millions/s 50.5 %
Mathemathic operations (integer) 16478.5 millions/s 0 % 9661.2 millions/s 41.4 %
Mathemathic operations (float) 7209 millions/s 0 % 4045.9 millions/s 43.9 %

Comparison of average FPS

Comparison of average FPS count by settings on resolution 1920 × 1080 (FHD (1080p)) for Core i7-875K, Core i5-661.

Average frames per second Core i7-875K Core i5-661
Screen resolution: 1920 × 1080 pixels   Change
Ultra settings 66.4 FPS 60.2 FPS
High settings 106.3 FPS 96.3 FPS
Medium settings 132.8 FPS 120.4 FPS
Low settings 166.0 FPS 150.5 FPS
Difference 0 % 9.4 %

Grand Theft Auto V Frames per second

Comparison of FPS count by settings on resolution 1920 × 1080 (FHD (1080p)) in game 1920 × 1080 (FHD (1080p)) for Grand Theft Auto V.

Grand Theft Auto V Core i7-875K Core i5-661
Screen resolution: 1920 × 1080 pixels   Change
Ultra settings 116.9 FPS 113.2 FPS
High settings 187.0 FPS 181.1 FPS
Medium settings 233.7 FPS 226.4 FPS
Low settings 292.2 FPS 283.0 FPS
Difference 0 % 3.1 %
Configuration Settings
Gaming astronaut image
Video game
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Screen resolution Screen resolution image
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