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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
Much 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 higher clock speed 3.2 GHz vs 2.5 GHz Around 30% higher clock speed
Much more l3 cache per core 1.5 MB/core vs 0.17 MB/core 9x more l3 cache per core
Much better overclocked clock speed (Air) 3.99 GHz vs 3.25 GHz Around 25% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.14 GHz vs 2.5 GHz More than 65% better overclocked clock speed (Water)
Front view of AMD Athlon II X3 415e

Reasons to consider the
AMD Athlon II X3 415e

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Much lower typical power consumption 36.56W vs 101.56W 2.8x lower typical power consumption
Much more l2 cache per core 0.67 MB/core vs 0.5 MB/core Around 35% more l2 cache per core
Much higher Maximum operating temperature 72 °C vs 62 °C More than 15% higher Maximum operating temperature
Much lower annual commercial energy cost 39.42 $/year vs 109.5 $/year 2.8x lower annual commercial energy cost
Much lower annual home energy cost 10.84 $/year vs 30.11 $/year 2.8x lower annual home energy cost

Benchmarks Real world tests of Phenom II X4 955 vs Athlon II X3 415e

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 415e
101.05 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Phenom II X4 955  vs
Athlon II X3 415e 
Clock speed 3.2 GHz 2.5 GHz
Cores Quad core Tri core
Socket type
AM3
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 45W
Annual home energy cost 30.11 $/year 10.84 $/year
Annual commercial energy cost 109.5 $/year 39.42 $/year
Performance per watt 1.28 pt/W 1.7 pt/W
Typical power consumption 101.56W 36.56W

details

Phenom II X4 955  vs
Athlon II X3 415e 
Architecture x86-64 x86-64
Threads 4 3
L2 cache 2 MB 2 MB
L2 cache per core 0.5 MB/core 0.67 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
Operating temperature Unknown - 62°C Unknown - 72°C

overclocking

Overclocked clock speed 3.99 GHz 3.25 GHz
Overclocked clock speed (Water) 4.14 GHz 2.5 GHz
Overclocked clock speed (Air) 3.99 GHz 3.25 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 2,000 MHz
AMD Phenom II X4 955
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AMD Athlon II X3 415e
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