CPUBoss Review Our evaluation of 955 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

5.3

CPUBoss Score

Combination of all six facets

Winner
AMD Phenom II X4 955 

CPUBoss recommends the AMD Phenom II X4 955  based on its performance and single-core performance.

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VS

AMD Phenom II X4 955

CPUBoss Winner
Front view of AMD Phenom II X4 955

Differences What are the advantages of each

Front view of AMD Phenom II X4 955

Reasons to consider the
AMD Phenom II X4 955

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
More l2 cache 2 MB vs 1.5 MB Around 35% more l2 cache; more data can be stored in the l2 cache for quick access later
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
Much more l3 cache per core 1.5 MB/core vs 0.17 MB/core 9x more l3 cache per core
Better geekbench 3 Multi-Core score 5,898 vs 4,354 More than 35% better geekbench 3 Multi-Core score
Lower typical power consumption 101.56W vs 113.2W More than 10% lower typical power consumption
Better geekbench 3 AES single core score 129,850 MB/s vs 128,950 MB/s Almost the same
More cores 4 vs 3 1 more cores; run more applications at once
Much lower annual home energy cost 30.11 $/year vs 39.59 $/year Around 25% lower annual home energy cost
Significantly better overclocked clock speed (Water) 4.14 GHz vs 3.1 GHz Around 35% better overclocked clock speed (Water)
Front view of AMD Athlon II X3 450

Reasons to consider the
AMD Athlon II X3 450

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Much better performance per dollar 2.13 pt/$ vs 1.69 pt/$ More than 25% better performance per dollar
Higher Maximum operating temperature 75 °C vs 62 °C More than 20% higher Maximum operating temperature
Newer Sep, 2010 vs Nov, 2009 Release date 10 months later

Benchmarks Real world tests of Phenom II X4 955 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 X4 955
129,850 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 X4 955  vs
Athlon II X3 450 
Clock speed 3.2 GHz 3.2 GHz
Cores Quad 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 125W 95W
Annual home energy cost 30.11 $/year 39.59 $/year
Annual commercial energy cost 109.5 $/year 113.44 $/year
Performance per watt 1.28 pt/W 1.07 pt/W
Typical power consumption 101.56W 113.2W

bus

Clock speed 2,000 MHz 100 MHz

details

Phenom II X4 955  vs
Athlon II X3 450 
Architecture x86-64 x86-64
Threads 4 3
L2 cache 2 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 1.5 MB/core 0.17 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Voltage range 0.88 - 1.5V 0.85 - 1.4V
Operating temperature Unknown - 62°C Unknown - 75°C

overclocking

Overclock popularity 259 16
Overclocked clock speed 3.99 GHz 3.86 GHz
Overclocked clock speed (Water) 4.14 GHz 3.1 GHz
Overclocked clock speed (Air) 3.99 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
AMD Phenom II X4 955
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AMD Athlon II X3 450
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