CPUBoss Review Our evaluation of B55 vs 545 among desktop CPUs (over 75W)

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

2.3

CPUBoss Score

Combination of all six facets

Winner
AMD Phenom II X2 B55 

CPUBoss recommends the AMD Phenom II X2 B55  based on its .

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VS

Differences What are the advantages of each

Front view of AMD Phenom II X2 B55

Reasons to consider the
AMD Phenom II X2 B55

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CPUBoss is not aware of any important advantages of the B55 vs the 545.

Front view of AMD Phenom II X2 545

Reasons to consider the
AMD Phenom II X2 545

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

Benchmarks Real world tests of Phenom II X2 B55 vs 545

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

Phenom II X2 B55
134,050 MB/s
Phenom II X2 545
121,300 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Phenom II X2 B55  vs
545 
Clock speed 3 GHz 3 GHz
Cores Dual core Dual core
Socket type
AM3
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

power consumption

TDP 80W 80W
Annual home energy cost 19.27 $/year 19.27 $/year
Annual commercial energy cost 70.08 $/year 70.08 $/year
Performance per watt 2.01 pt/W 1.49 pt/W
Typical power consumption 65W 65W

bus

Clock speed 2,200 MHz 2,000 MHz

details

Phenom II X2 B55  vs
545 
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 6 MB 6 MB
L3 cache per core 3 MB/core 3 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Voltage range 0.78 - 1.43V 0.88 - 1.43V
Operating temperature Unknown - 70°C Unknown - 70°C

overclocking

Overclocked clock speed 3.72 GHz 3.64 GHz
Overclocked clock speed (Water) 3 GHz 3 GHz
Overclocked clock speed (Air) 3.72 GHz 3.64 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 Phenom II X2 B55
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AMD Phenom II X2 545
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