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Intel Core i5 661

CPUBoss Winner
Front view of Intel Core i5 661

Differences What are the advantages of each

Front view of Intel Core i5 661

Reasons to consider the
Intel Core i5 661

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Higher clock speed 3.33 GHz vs 3.2 GHz Around 5% higher clock speed
Much better overclocked clock speed (Air) 4.66 GHz vs 4.31 GHz Around 10% better overclocked clock speed (Air)
Front view of Intel Core i5 650

Reasons to consider the
Intel Core i5 650

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much better overclocked clock speed (Water) 5.08 GHz vs 3.33 GHz Around 55% better overclocked clock speed (Water)
Higher Maximum operating temperature 72.6 °C vs 69.8 °C Around 5% higher Maximum operating temperature

Benchmarks Real world tests of Core i5 661 vs 650

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i5 661
4,966
Core i5 650
4,709

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i5 661
2,244
Core i5 650
2,168

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i5 661
1,600,000 MB/s
Core i5 650
1,550,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i5 661
4,874
Core i5 650
4,675

GeekBench (64-bit) Data courtesy Primate Labs

Core i5 661
6,481
Core i5 650
4,902

GeekBench

Core i5 661
6,481
Core i5 650
6,669

PassMark Data courtesy Passmark

Core i5 661
3,184
Core i5 650
3,116

PassMark (Single Core)

Core i5 661
1,324
Core i5 650
1,319

Specifications Full list of technical specs

summary

Core i5 661  vs
650 
Clock speed 3.33 GHz 3.2 GHz
Turbo clock speed 3.6 GHz 3.46 GHz
Cores Dual core Dual core
Socket type
LGA 1156
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 87W 73W
Annual home energy cost 36.95 $/year 37.54 $/year
Annual commercial energy cost 96.71 $/year 96.89 $/year
Performance per watt 5.96 pt/W 4.67 pt/W
Idle power consumption 67W 69.1W
Peak power consumption 110.4W 110.6W
Typical power consumption 99.55W 100.22W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 2,500 MT/s 2,500 MT/s

details

Core i5 661  vs
650 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 4 MB 4 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 32 nm 32 nm
Transistor count 382,000,000 382,000,000
Max CPUs 1 1
Clock multiplier 25 24
Voltage range 0.65 - 1.4V 0.65 - 1.4V
Operating temperature Unknown - 69.8°C Unknown - 72.6°C

overclocking

Overclocked clock speed 4.66 GHz 4.31 GHz
Overclocked clock speed (Water) 3.33 GHz 5.08 GHz
Overclocked clock speed (Air) 4.66 GHz 4.31 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics Intel® HD Graphics
Number of displays supported 2 2
GPU clock speed 900 MHz 733 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Maximum bandwidth 21,333.32 MB/s 21,333.32 MB/s
Maximum memory size 16,773.12 MB 16,773.12 MB
Intel Core i5 661
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Intel Core i5 650
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