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AMD Phenom II X4 955

Front view of AMD Phenom II X4 955
Front view of AMD Athlon II X2 240

AMD Athlon II X2 240

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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
Significantly higher clock speed 3.2 GHz vs 2.8 GHz Around 15% higher clock speed
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Much better overclocked clock speed (Air) 3.99 GHz vs 3.67 GHz Around 10% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.14 GHz vs 2.8 GHz Around 50% better overclocked clock speed (Water)
Front view of AMD Athlon II X2 240

Reasons to consider the
AMD Athlon II X2 240

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Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 52.81W vs 101.56W Around 50% lower typical power consumption
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much higher Maximum operating temperature 74 °C vs 62 °C Around 20% higher Maximum operating temperature
Much lower annual home energy cost 15.66 $/year vs 30.11 $/year Around 50% lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 109.5 $/year Around 50% lower annual commercial energy cost

Benchmarks Real world tests of Phenom II X4 955 vs Athlon II X2 240

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Phenom II X4 955
5,898
Athlon II X2 240
2,624

GeekBench 3 (Single core) Data courtesy Primate Labs

Phenom II X4 955
1,679
Athlon II X2 240
1,423

GeekBench 3 (AES single core) Data courtesy Primate Labs

Phenom II X4 955
129,850 MB/s
Athlon II X2 240
112,300 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Phenom II X4 955
5,649
Athlon II X2 240
2,513

GeekBench (64-bit) Data courtesy Primate Labs

Phenom II X4 955
5,696
Athlon II X2 240
4,487

GeekBench

Phenom II X4 955
7,600
Athlon II X2 240
4,487

PassMark Data courtesy Passmark

Phenom II X4 955
3,960
Athlon II X2 240
1,642

PassMark (Single Core)

Phenom II X4 955
1,113
Athlon II X2 240
938

Specifications Full list of technical specs

summary

 Phenom II X4 955  vs
Athlon II X2 240 
Clock speed 3.2 GHz 2.8 GHz
Cores Quad core Dual core
Socket type
AM3
Is unlocked Yes No

features
Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
SSE3
SSE
CLMUL
AMD64
SSE4.1
FMA4
SSE4.2
CVT16
AMD-V
3DNow!
AES
Supports dynamic frequency scaling Yes Yes

power consumption
TDP 125W 65W
Annual home energy cost 30.11 $/year 15.66 $/year
Annual commercial energy cost 109.5 $/year 56.94 $/year
Performance per watt 1.28 pt/W 1.67 pt/W
Typical power consumption 101.56W 52.81W

bus
Clock speed 2,000 MHz 2,000 MHz

details

 Phenom II X4 955  vs
Athlon II X2 240 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 2 MB 2 MB
L2 cache per core 0.5 MB/core 1 MB/core
L3 cache 6 MB 1 MB
L3 cache per core 1.5 MB/core 0.5 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 62°C Unknown - 74°C

overclocking
Overclock popularity 259 23
Overclocked clock speed 3.99 GHz 3.67 GHz
Overclocked clock speed (Water) 4.14 GHz 2.8 GHz
PassMark (Overclocked) 3,674.7 2,103.5
Overclocked clock speed (Air) 3.99 GHz 3.67 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 X2 240
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