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Differences What are the advantages of each

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
Significantly higher clock speed 3.2 GHz vs 2.7 GHz Around 20% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Air) 4 GHz vs 3.56 GHz More than 10% better overclocked clock speed (Air)
Newer May, 2010 vs Sep, 2009 Release date 8 months later
Front view of AMD Athlon II X2 215

Reasons to consider the
AMD Athlon II X2 215

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Significantly better overclocked clock speed (Water) 3.79 GHz vs 3.2 GHz Around 20% better overclocked clock speed (Water)

Benchmarks Real world tests of Athlon II X2 B26 vs 215

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

Athlon II X2 B26
129.4 MB/s
Athlon II X2 215
109,100 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon II X2 B26  vs
215 
Clock speed 3.2 GHz 2.7 GHz
Cores Dual core Dual core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

bus

Clock speed 2,000 MHz 2,000 MHz

details

Athlon II X2 B26  vs
215 
Threads 2 2
L2 cache 2 MB 1 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Operating temperature Unknown - 74°C Unknown - 74°C

overclocking

Overclocked clock speed 4 GHz 3.56 GHz
Overclocked clock speed (Water) 3.2 GHz 3.79 GHz
Overclocked clock speed (Air) 4 GHz 3.56 GHz

power consumption

TDP 65W 65W
Annual home energy cost 15.66 $/year 15.66 $/year
Annual commercial energy cost 56.94 $/year 56.94 $/year
Performance per watt 1.25 pt/W 1.62 pt/W
Typical power consumption 52.81W 52.81W
AMD Athlon II X2 B26
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AMD Athlon II X2 215
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