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Differences What are the advantages of each

Front view of AMD Sempron 2650

Reasons to consider the
AMD Sempron 2650

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Much more l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 2 vs 1 Twice as many cores; run more applications at once
More threads 2 vs 1 Twice as many threads
Front view of AMD Athlon 64 3400+

Reasons to consider the
AMD Athlon 64 3400+

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Much higher clock speed 2.2 GHz vs 1.4 GHz More than 55% higher clock speed

Benchmarks Real world tests of Sempron 2650 vs Athlon 64 3400+

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Sempron 2650  vs
Athlon 64 3400+ 
Clock speed 1.4 GHz 2.2 GHz
Cores Dual core Single core
Socket type
FS1b
939

features

Has a NX bit Yes Yes
Instruction set extensions
SSE2
F16C
MMX
AVX
SSE3
SSE
AMD64
SSE4.1
SSE4.2
AMD-V
3DNow!
Supplemental SSE3
AES

details

Sempron 2650  vs
Athlon 64 3400+ 
Threads 2 1
L2 cache 1 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Max CPUs 1 1

power consumption

Typical power consumption 20.31W N/A
AMD Sempron 2650
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AMD Athlon 64 3400+
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