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Differences What are the advantages of each

Front view of Intel Pentium 955

Reasons to consider the
Intel Pentium 955

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CPUBoss is not aware of any important advantages of the Intel Pentium 955 vs the AMD Phenom II X2 550.

Front view of AMD Phenom II X2 550

Reasons to consider the
AMD Phenom II X2 550

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Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed

Benchmarks Real world tests of Pentium 955 vs Phenom II X2 550

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

Cinebench R10 32-Bit

Cinebench R10 32-Bit (Single Core)

sysmark 2007 (overall)

sysmark 2007 (3d)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Pentium 955  vs
Phenom II X2 550 
Clock speed 3.46 GHz 3.1 GHz
Cores Dual core Dual core
Socket type
LGA 775
AM3
Is unlocked Yes 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 No Yes

power consumption

TDP 130W 80W
Annual home energy cost 31.32 $/year 46.25 $/year
Annual commercial energy cost 113.88 $/year 120.89 $/year
Performance per watt 0.49 pt/W 0.89 pt/W
Typical power consumption 105.63W 124.5W

details

Pentium 955  vs
Phenom II X2 550 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 4 MB 1 MB
L2 cache per core 2 MB/core 0.5 MB/core
Manufacture process 65 nm 45 nm
Max CPUs 1 1
Voltage range 1.2 - 1.34V 0.85 - 1.43V
Operating temperature Unknown - 68.6°C Unknown - 70°C

overclocking

Overclocked clock speed 4.39 GHz 3.81 GHz
Overclocked clock speed (Water) 4.61 GHz 3.12 GHz
Overclocked clock speed (Air) 4.39 GHz 3.81 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 1,066 MHz 2,000 MHz
Intel Pentium 955
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AMD Phenom II X2 550
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