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Differences What are the advantages of each

Front view of AMD Phenom II X2 550

Reasons to consider the
AMD Phenom II X2 550

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Front view of AMD Athlon II X2 260

Reasons to consider the
AMD Athlon II X2 260

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Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much lower typical power consumption 52.81W vs 124.5W 2.4x lower typical power consumption
Much better performance per watt 1.91 pt/W vs 0.89 pt/W Around 2.2x better performance per watt
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Higher clock speed 3.2 GHz vs 3.1 GHz Around 5% higher clock speed
Much lower annual home energy cost 15.66 $/year vs 46.25 $/year 3x lower annual home energy cost
Significantly higher Maximum operating temperature 74 °C vs 70 °C More than 5% higher Maximum operating temperature
Much lower annual commercial energy cost 56.94 $/year vs 120.89 $/year 2.1x lower annual commercial energy cost
Much better overclocked clock speed (Water) 3.91 GHz vs 3.12 GHz More than 25% better overclocked clock speed (Water)

Benchmarks Real world tests of Phenom II X2 550 vs Athlon II X2 260

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 X2 550
125,000 MB/s
Athlon II X2 260
128,900 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 II X2 550  vs
Athlon II X2 260 
Clock speed 3.1 GHz 3.2 GHz
Cores Dual 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
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 65W
Annual home energy cost 46.25 $/year 15.66 $/year
Annual commercial energy cost 120.89 $/year 56.94 $/year
Performance per watt 0.89 pt/W 1.91 pt/W
Typical power consumption 124.5W 52.81W

bus

Clock speed 2,000 MHz 2,000 MHz

details

Phenom II X2 550  vs
Athlon II X2 260 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 1 MB 2 MB
L2 cache per core 0.5 MB/core 1 MB/core
L3 cache 6 MB 1 MB
L3 cache per core 3 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Voltage range 0.85 - 1.43V 0.82 - 1.4V
Operating temperature Unknown - 70°C Unknown - 74°C

overclocking

Overclock popularity 7 13
Overclocked clock speed 3.81 GHz 3.84 GHz
Overclocked clock speed (Water) 3.12 GHz 3.91 GHz
Overclocked clock speed (Air) 3.81 GHz 3.84 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 X2 550
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AMD Athlon II X2 260
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