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Differences What are the advantages of each

Front view of AMD Athlon II X2 270

Reasons to consider the
AMD Athlon II X2 270

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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 0.5 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Water) 4.09 GHz vs 3.4 GHz More than 20% better overclocked clock speed (Water)
Front view of AMD A4 5300

Reasons to consider the
AMD A4 5300

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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
Much better overclocked clock speed (Air) 4.49 GHz vs 4.02 GHz More than 10% better overclocked clock speed (Air)
Newer Oct, 2012 vs May, 2011 Release date over 1 years later

Benchmarks Real world tests of Athlon II X2 270 vs A4 5300

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 270
136,900 MB/s
A4 5300
2,030,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

3D Mark 11 (Physics)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon II X2 270  vs
A4 5300 
Clock speed 3.4 GHz 3.4 GHz
Cores Dual core Dual core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
SSE3
SSE
CLMUL
AMD64
SSE4.1
FMA4
SSE4.2
CVT16
AMD-V
3DNow!
AES
Supports dynamic frequency scaling Yes Yes

details

Athlon II X2 270  vs
A4 5300 
Threads 2 2
L2 cache 2 MB 1 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 1

overclocking

Overclock popularity 1 5
Overclocked clock speed 4.02 GHz 4.49 GHz
Overclocked clock speed (Water) 4.09 GHz 3.4 GHz
Overclocked clock speed (Air) 4.02 GHz 4.49 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 2.03 pt/W 7.32 pt/W
Typical power consumption 52.81W 52.81W
AMD Athlon II X2 270
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AMD A4 5300
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