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Differences What are the advantages of each

Front view of AMD Athlon X2 4450B

Reasons to consider the
AMD Athlon X2 4450B

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More cores 2 vs 1 Twice as many cores; run more applications at once
More threads 2 vs 1 Twice as many threads
Much higher Maximum operating temperature 78 °C vs 65 °C 20% higher Maximum operating temperature
Front view of AMD Athlon 1640B

Reasons to consider the
AMD Athlon 1640B

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CPUBoss is not aware of any important advantages of the Athlon 1640B vs the Athlon X2 4450B.

Benchmarks Real world tests of Athlon X2 4450B vs 1640B

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 4450B
63,200 MB/s
Athlon 1640B
64.8 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon X2 4450B  vs
1640B 
Clock speed 2.3 GHz 2.7 GHz
Cores Dual core Single core
Socket type
AM2+
AM2
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
3DNow!

power consumption

TDP 45W 45W
Annual home energy cost 10.84 $/year 10.84 $/year
Annual commercial energy cost 39.42 $/year 39.42 $/year
Performance per watt 1.58 pt/W 0.93 pt/W
Typical power consumption 36.56W 36.56W

details

Athlon X2 4450B  vs
1640B 
Architecture x86-64 x86-64
Threads 2 1
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 1 MB/core
L3 cache 0.5 MB 0.5 MB
L3 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 65 nm 65 nm
Max CPUs 1 1
Operating temperature Unknown - 78°C Unknown - 65°C

overclocking

Overclocked clock speed 3 GHz 2.7 GHz
Overclocked clock speed (Water) 2.58 GHz 2.7 GHz
Overclocked clock speed (Air) 3 GHz 2.7 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A
AMD Athlon X2 4450B
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AMD Athlon 1640B
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