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Differences What are the advantages of each

Front view of Intel Core i5 750

Reasons to consider the
Intel Core i5 750

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CPUBoss is not aware of any important advantages of the 750 vs the 661.

Front view of Intel Core i5 661

Reasons to consider the
Intel Core i5 661

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required

Benchmarks Real world tests of Core i5 750 vs 661

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i5 750
6,025
Core i5 661
4,966

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i5 750
2,013
Core i5 661
2,244

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i5 750
127,600 MB/s
Core i5 661
1,600,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i5 750
5,656
Core i5 661
4,874

GeekBench (64-bit) Data courtesy Primate Labs

Core i5 750
6,332
Core i5 661
6,481

GeekBench

Core i5 750
7,570
Core i5 661
6,481

PassMark Data courtesy Passmark

Core i5 750
3,711
Core i5 661
3,184

PassMark (Single Core)

Core i5 750
1,138
Core i5 661
1,324

Reviews Word on the street

Specifications Full list of technical specs

summary

Core i5 750  vs
661 
Clock speed 2.66 GHz 3.33 GHz
Turbo clock speed 3.2 GHz 3.6 GHz
Cores Quad core Dual core
Socket type
LGA 1156
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing No No
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 95W 87W
Annual home energy cost 42.81 $/year 36.95 $/year
Annual commercial energy cost 122.73 $/year 96.71 $/year
Performance per watt 0.89 pt/W 5.96 pt/W
Idle power consumption 69.5W 67W
Peak power consumption 140.1W 110.4W
Typical power consumption 122.45W 99.55W

bus

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

details

Core i5 750  vs
661 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 8 MB 4 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 45 nm 32 nm
Transistor count 774,000,000 382,000,000
Max CPUs 1 1
Clock multiplier 20 25
Voltage range 0.65 - 1.4V 0.65 - 1.4V
Operating temperature Unknown - 72.7°C Unknown - 69.8°C

overclocking

Overclocked clock speed 4.13 GHz 4.66 GHz
Overclocked clock speed (Water) 4.09 GHz 3.33 GHz
Overclocked clock speed (Air) 4.13 GHz 4.66 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics
Number of displays supported N/A 2
GPU clock speed N/A 900 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 16,384 MB 16,773.12 MB
Intel Core i5 750
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Intel Core i5 661
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