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Differences What are the advantages of each

Front view of AMD Athlon X4 730

Reasons to consider the
AMD Athlon X4 730

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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 more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost
Front view of AMD Athlon II X4 640

Reasons to consider the
AMD Athlon II X4 640

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Higher clock speed 3 GHz vs 2.8 GHz More than 5% higher clock speed

Benchmarks Real world tests of Athlon X4 730 vs II X4 640

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 X4 730
1,725,000 MB/s
Athlon II X4 640
121,100 MB/s

Specifications Full list of technical specs

summary

Athlon X4 730  vs
II X4 640 
Clock speed 2.8 GHz 3 GHz
Cores Quad core Quad core

features

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

details

Athlon X4 730  vs
II X4 640 
Threads 4 4
L2 cache 4 MB 2 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 1 1

power consumption

TDP 65W 95W
Annual home energy cost 15.66 $/year 22.89 $/year
Annual commercial energy cost 56.94 $/year 83.22 $/year
Performance per watt 16.18 pt/W 1.54 pt/W
Typical power consumption 52.81W 77.19W
AMD Athlon X4 730
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AMD Athlon II X4 640
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