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Differences What are the advantages of each

Front view of AMD Athlon X2 7750

Reasons to consider the
AMD Athlon X2 7750

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Much newer manufacturing process 65 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better PassMark score 1,577 vs 1,145 Around 40% better PassMark score
Much better PassMark (Single core) score 901 vs 691 More than 30% better PassMark (Single core) score
Much better geekbench 2 (32-bit) score 2,341 vs 1,629 Around 45% better geekbench 2 (32-bit) score
Significantly higher clock speed 2.7 GHz vs 2.3 GHz More than 15% higher clock speed
Much better overclocked clock speed (Air) 3.07 GHz vs 2.75 GHz More than 10% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 3.38 GHz vs 3.13 GHz Around 10% better overclocked clock speed (Water)
Front view of AMD Athlon 64 X2 4400+

Reasons to consider the
AMD Athlon 64 X2 4400+

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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

Benchmarks Real world tests of Athlon X2 7750 vs 64 X2 4400+

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 X2 7750
101,750 MB/s
Athlon 64 X2 4400+
85.5 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon X2 7750  vs
64 X2 4400+ 
Clock speed 2.7 GHz 2.3 GHz
Cores Dual core Dual core
Socket type
AM2+
AM2
939

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

details

Athlon X2 7750  vs
64 X2 4400+ 
Threads 2 2
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 65 nm 90 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.07 GHz 2.75 GHz
Overclocked clock speed (Water) 3.38 GHz 3.13 GHz
PassMark (Overclocked) 1,848.4 1,605.4
Overclocked clock speed (Air) 3.07 GHz 2.75 GHz

power consumption

TDP 95W 65W
Annual home energy cost 22.89 $/year 15.66 $/year
Annual commercial energy cost 83.22 $/year 56.94 $/year
Performance per watt 1.05 pt/W 0.89 pt/W
Typical power consumption 77.19W 52.81W
AMD Athlon X2 7750
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AMD Athlon 64 X2 4400+
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