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Differences What are the advantages of each

Front view of AMD Phenom X4 9950

Reasons to consider the
AMD Phenom X4 9950

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CPUBoss is not aware of any important advantages of the Phenom X4 9950 vs the Phenom II X4 955.

Front view of AMD Phenom II X4 955

Reasons to consider the
AMD Phenom II X4 955

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CPUBoss is not aware of any important advantages of the Phenom II X4 955 vs the Phenom X4 9950.

Benchmarks Real world tests of Phenom X4 9950 vs II X4 955

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 X4 9950
99,900 MB/s
Phenom II X4 955
129,850 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Phenom X4 9950  vs
II X4 955 
Clock speed 2.6 GHz 3.2 GHz
Cores Quad core Quad core
Socket type
AM2+
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 Yes Yes

power consumption

TDP 140W 125W
Annual home energy cost 33.73 $/year 30.11 $/year
Annual commercial energy cost 122.64 $/year 109.5 $/year
Performance per watt 0.88 pt/W 1.28 pt/W
Typical power consumption 113.75W 101.56W

bus

Clock speed 2,000 MHz 2,000 MHz

details

Phenom X4 9950  vs
II X4 955 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 2 MB 2 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 2 MB 6 MB
L3 cache per core 0.5 MB/core 1.5 MB/core
Manufacture process 65 nm 45 nm
Max CPUs 1 1
Operating temperature Unknown - 64°C Unknown - 62°C

overclocking

Overclocked clock speed 3.11 GHz 3.99 GHz
Overclocked clock speed (Water) 3.37 GHz 4.14 GHz
PassMark (Overclocked) 2,145.3 3,674.7
Overclocked clock speed (Air) 3.11 GHz 3.99 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 X4 9950
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AMD Phenom II X4 955
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