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Differences What are the advantages of each

Front view of Intel Core i5 2400

Reasons to consider the
Intel Core i5 2400

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Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Better overclocked clock speed (Water) 3.51 GHz vs 3.2 GHz Around 10% better overclocked clock speed (Water)
Newer Jan, 2011 vs May, 2010 Release date 7 months later
Front view of AMD Athlon II X2 B26

Reasons to consider the
AMD Athlon II X2 B26

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Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Much lower typical power consumption 52.81W vs 93.6W Around 45% lower typical power consumption
Higher clock speed 3.2 GHz vs 3.1 GHz Around 5% higher clock speed
Much better overclocked clock speed (Air) 4 GHz vs 3.54 GHz Around 15% better overclocked clock speed (Air)
Much lower annual home energy cost 15.66 $/year vs 27.75 $/year Around 45% lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 100.92 $/year Around 45% lower annual commercial energy cost
Higher Maximum operating temperature 74 °C vs 72.6 °C Almost the same

Benchmarks Real world tests of Core i5 2400 vs Athlon II X2 B26

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 2400
2,260,000 MB/s
Athlon II X2 B26
129.4 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i5 2400  vs
Athlon II X2 B26 
Clock speed 3.1 GHz 3.2 GHz
Cores Quad core Dual core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

details

Core i5 2400  vs
Athlon II X2 B26 
Threads 4 2
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 1 1
Operating temperature Unknown - 72.6°C Unknown - 74°C

overclocking

Overclocked clock speed 3.54 GHz 4 GHz
Overclocked clock speed (Water) 3.51 GHz 3.2 GHz
Overclocked clock speed (Air) 3.54 GHz 4 GHz

power consumption

TDP 95W 65W
Annual home energy cost 27.75 $/year 15.66 $/year
Annual commercial energy cost 100.92 $/year 56.94 $/year
Performance per watt 8.14 pt/W 1.25 pt/W
Typical power consumption 93.6W 52.81W
Intel Core i5 2400
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AMD Athlon II X2 B26
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