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Differences What are the advantages of each

Front view of AMD Athlon II X2 245

Reasons to consider the
AMD Athlon II X2 245

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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 newer manufacturing process 45 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 2.9 GHz vs 2.3 GHz More than 25% higher clock speed
Much better PassMark score 1,690 vs 1,145 Around 50% better PassMark score
Much better PassMark (Single core) score 974 vs 691 More than 40% better PassMark (Single core) score
Much better geekbench 2 (32-bit) score 2,630 vs 1,629 More than 60% better geekbench 2 (32-bit) score
Much better performance per watt 1.73 pt/W vs 0.89 pt/W Around 95% better performance per watt
Much better overclocked clock speed (Air) 3.64 GHz vs 2.75 GHz More than 30% better overclocked clock speed (Air)
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 GHz vs 3.13 GHz Around 30% 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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CPUBoss is not aware of any important advantages of the Athlon 64 X2 4400+ vs the Athlon II X2 245.

Benchmarks Real world tests of Athlon II X2 245 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 II X2 245
116,550 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 II X2 245  vs
64 X2 4400+ 
Clock speed 2.9 GHz 2.3 GHz
Cores Dual core Dual core
Socket type
AM3
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 II X2 245  vs
64 X2 4400+ 
Threads 2 2
L2 cache 2 MB 1 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 45 nm 90 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.64 GHz 2.75 GHz
Overclocked clock speed (Water) 4 GHz 3.13 GHz
PassMark (Overclocked) 1,955.2 1,605.4
Overclocked clock speed (Air) 3.64 GHz 2.75 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 1.73 pt/W 0.89 pt/W
Typical power consumption 52.81W 52.81W
AMD Athlon II X2 245
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AMD Athlon 64 X2 4400+
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