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Differences What are the advantages of each

Front view of Intel Core i5 660

Reasons to consider the
Intel Core i5 660

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Higher clock speed 3.33 GHz vs 3.1 GHz More than 5% higher clock speed
Much lower typical power consumption 59.31W vs 93.6W More than 35% lower typical power consumption
Much better overclocked clock speed (Air) 4.28 GHz vs 3.54 GHz More than 20% better overclocked clock speed (Air)
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Water) 4.86 GHz vs 3.51 GHz Around 40% better overclocked clock speed (Water)
Much lower annual home energy cost 17.59 $/year vs 27.75 $/year More than 35% lower annual home energy cost
Much lower annual commercial energy cost 63.95 $/year vs 100.92 $/year More than 35% lower annual commercial energy cost
Front view of Intel Core i5 2400

Reasons to consider the
Intel Core i5 2400

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More cores 4 vs 2 Twice as many cores; run more applications at once
Supports more RAM 32,768 MB vs 16,773.12 MB Supports more than 95% more RAM
Newer Jan, 2011 vs Jan, 2010 Release date a year later

Benchmarks Real world tests of Core i5 660 vs 2400

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i5 660
1,640,000 MB/s
Core i5 2400
2,260,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

Core i5 660
5,664
Core i5 2400
10,769

3D Mark 11 (Physics)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i5 660  vs
2400 
Clock speed 3.33 GHz 3.1 GHz
Turbo clock speed 3.6 GHz 3.4 GHz
Cores Dual core Quad core
Socket type
LGA 1156
LGA 1155
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 73W 95W
Annual home energy cost 17.59 $/year 27.75 $/year
Annual commercial energy cost 63.95 $/year 100.92 $/year
Performance per watt 9.23 pt/W 8.14 pt/W
Typical power consumption 59.31W 93.6W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 2,500 MT/s 5,000 MT/s

details

Core i5 660  vs
2400 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
L3 cache 4 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 1 1
Clock multiplier 25 31
Operating temperature Unknown - 72.6°C Unknown - 72.6°C

overclocking

Overclocked clock speed 4.28 GHz 3.54 GHz
Overclocked clock speed (Water) 4.86 GHz 3.51 GHz
Overclocked clock speed (Air) 4.28 GHz 3.54 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics Intel® HD Graphics 2000
Number of displays supported 2 2
GPU clock speed 733 MHz 850 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 32,768 MB
Intel Core i5 660
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Intel Core i5 2400
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