CPUBoss Review Our evaluation of 550 vs 450 among all CPUs

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

Sky Diver and Cloud Gate

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?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

No winner declared

Too close to call

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VS
Front view of AMD Athlon II X3 450

AMD Athlon II X3 450

CPUBoss Winner

Differences What are the advantages of each

Front view of AMD Phenom II X2 550

Reasons to consider the
AMD Phenom II X2 550

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much more l3 cache per core 3 MB/core vs 0.17 MB/core More than 18x more l3 cache per core
More l3 cache 6 MB vs 0.5 MB 12x more l3 cache; more data can be stored in the l3 cache for quick access later
Front view of AMD Athlon II X3 450

Reasons to consider the
AMD Athlon II X3 450

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More l2 cache 1.5 MB vs 1 MB 50% more l2 cache; more data can be stored in the l2 cache for quick access later
Much better geekbench 3 AES single core score 128,950 MB/s vs 125,000 MB/s Around 5% better geekbench 3 AES single core score
Lower typical power consumption 113.2W vs 124.5W Around 10% lower typical power consumption
Better geekbench 3 Multi-Core score 4,354 vs 2,966 More than 45% better geekbench 3 Multi-Core score
More cores 3 vs 2 1 more cores; run more applications at once
Higher Maximum operating temperature 75 °C vs 70 °C More than 5% higher Maximum operating temperature
Significantly lower annual home energy cost 39.59 $/year vs 46.25 $/year Around 15% lower annual home energy cost
Newer Sep, 2010 vs Nov, 2009 Release date 10 months later
Lower annual commercial energy cost 113.44 $/year vs 120.89 $/year More than 5% lower annual commercial energy cost

Benchmarks Real world tests of Phenom II X2 550 vs Athlon II X3 450

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 550
125,000 MB/s
Athlon II X3 450
128,950 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Reviews Word on the street

Specifications Full list of technical specs

summary

Phenom II X2 550  vs
Athlon II X3 450 
Clock speed 3.1 GHz 3.2 GHz
Cores Dual core Tri core
Socket type
AM3
Super 7
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 80W 95W
Annual home energy cost 46.25 $/year 39.59 $/year
Annual commercial energy cost 120.89 $/year 113.44 $/year
Performance per watt 0.89 pt/W 1.07 pt/W
Idle power consumption 84W 64.3W
Peak power consumption 138W 129.5W
Typical power consumption 124.5W 113.2W

details

Phenom II X2 550  vs
Athlon II X3 450 
Architecture x86-64 x86-64
Threads 2 3
L2 cache 1 MB 1.5 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 6 MB 0.5 MB
L3 cache per core 3 MB/core 0.17 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Voltage range 0.85 - 1.43V 0.85 - 1.4V
Operating temperature Unknown - 70°C Unknown - 75°C

overclocking

Overclock popularity 7 16
Overclocked clock speed 3.81 GHz 3.86 GHz
Overclocked clock speed (Water) 3.12 GHz 3.1 GHz
Overclocked clock speed (Air) 3.81 GHz 3.86 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

bus

Clock speed 2,000 MHz 100 MHz
AMD Phenom II X2 550
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AMD Athlon II X3 450
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