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Differences What are the advantages of each

Front view of AMD Phenom X3 B77

Reasons to consider the
AMD Phenom X3 B77

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CPUBoss is not aware of any important advantages of the Phenom X3 B77 vs the Phenom II X3 720.

Front view of AMD Phenom II X3 720

Reasons to consider the
AMD Phenom II X3 720

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking

Benchmarks Real world tests of Phenom X3 B77 vs II X3 720

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Phenom X3 B77  vs
II X3 720 
Clock speed 3.2 GHz 2.8 GHz
Cores Tri core Tri core
Is unlocked No Yes

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

bus

Clock speed 2,000 MHz 2,000 MHz

details

Phenom X3 B77  vs
II X3 720 
Threads 3 3
L2 cache 1.5 MB 2 MB
L2 cache per core 0.5 MB/core 0.67 MB/core
L3 cache 0 MB 6 MB
L3 cache per core 0 MB/core 2 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.2 GHz 3.61 GHz
Overclocked clock speed (Water) 4.4 GHz 3.86 GHz
Overclocked clock speed (Air) 3.2 GHz 3.61 GHz

power consumption

TDP 95W 95W
Annual home energy cost 22.89 $/year 22.89 $/year
Annual commercial energy cost 83.22 $/year 83.22 $/year
Performance per watt 1.38 pt/W 1.38 pt/W
Typical power consumption 77.19W 77.19W
AMD Phenom X3 B77
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AMD Phenom II X3 720
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