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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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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much more l3 cache 2 MB vs 0.5 MB 4x more l3 cache; more data can be stored in the l3 cache for quick access later
Much better PassMark score 1,577 vs 1,098 Around 45% better PassMark score
Much better PassMark (Single core) score 901 vs 669 Around 35% better PassMark (Single core) score
Much better geekbench 2 (32-bit) score 2,341 vs 1,585 Around 50% better geekbench 2 (32-bit) score
Significantly higher clock speed 2.7 GHz vs 2.3 GHz More than 15% higher clock speed
Much more l3 cache per core 1 MB/core vs 0.25 MB/core 4x more l3 cache per core
Better overclocked clock speed (Air) 3.07 GHz vs 3.01 GHz Almost the same
Better overclocked clock speed (Water) 3.38 GHz vs 3.27 GHz Around 5% better overclocked clock speed (Water)
Newer Dec, 2008 vs Apr, 2008 Release date 7 months later
Front view of AMD Athlon X2 4450e

Reasons to consider the
AMD Athlon X2 4450e

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Much better performance per watt 1.56 pt/W vs 1.05 pt/W Around 50% better performance per watt
Much lower typical power consumption 36.56W vs 77.19W 2.1x lower typical power consumption
Significantly higher Maximum operating temperature 78 °C vs 73 °C More than 5% higher Maximum operating temperature
Much lower annual commercial energy cost 39.42 $/year vs 83.22 $/year 2.1x lower annual commercial energy cost
Much lower annual home energy cost 10.84 $/year vs 22.89 $/year 2.1x lower annual home energy cost

Benchmarks Real world tests of Athlon X2 7750 vs 4450e

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 X2 4450e
63,550 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

Cinebench R10 32-Bit

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon X2 7750  vs
4450e 
Clock speed 2.7 GHz 2.3 GHz
Cores Dual core Dual core
Socket type
AM2+
AM2
Is unlocked Yes No

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

power consumption

TDP 95W 45W
Annual home energy cost 22.89 $/year 10.84 $/year
Annual commercial energy cost 83.22 $/year 39.42 $/year
Performance per watt 1.05 pt/W 1.56 pt/W
Typical power consumption 77.19W 36.56W

details

Athlon X2 7750  vs
4450e 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 2 MB 0.5 MB
L3 cache per core 1 MB/core 0.25 MB/core
Manufacture process 65 nm 65 nm
Max CPUs 1 1
Operating temperature Unknown - 73°C Unknown - 78°C

overclocking

Overclocked clock speed 3.07 GHz 3.01 GHz
Overclocked clock speed (Water) 3.38 GHz 3.27 GHz
Overclocked clock speed (Air) 3.07 GHz 3.01 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 7750
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AMD Athlon X2 4450e
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