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Differences What are the advantages of each

Front view of AMD Athlon II X2 B28

Reasons to consider the
AMD Athlon II X2 B28

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Much higher clock speed 3.4 GHz vs 2 GHz 70% higher clock speed
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 better PassMark score 2,121 vs 626 Around 3.5x better PassMark score
Much better PassMark (Single core) score 1,184 vs 634 More than 85% better PassMark (Single core) score
Much better overclocked clock speed (Air) 4.57 GHz vs 3.11 GHz More than 45% better overclocked clock speed (Air)
More cores 2 vs 1 Twice as many cores; run more applications at once
More threads 2 vs 1 Twice as many threads
Much better overclocked clock speed (Water) 3.4 GHz vs 2 GHz 70% better overclocked clock speed (Water)
Front view of AMD Athlon II 170u

Reasons to consider the
AMD Athlon II 170u

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Much lower typical power consumption 16.25W vs 52.81W 3.2x lower typical power consumption
Much higher Maximum operating temperature 80 °C vs 74 °C Around 10% higher Maximum operating temperature
Much lower annual home energy cost 4.82 $/year vs 15.66 $/year 3.2x lower annual home energy cost
Much lower annual commercial energy cost 17.52 $/year vs 56.94 $/year 3.3x lower annual commercial energy cost

Benchmarks Real world tests of Athlon II X2 B28 vs 170u

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

Athlon II X2 B28
133,900 MB/s
Athlon II 170u
78,400 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon II X2 B28  vs
170u 
Clock speed 3.4 GHz 2 GHz
Cores Dual core Single core

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

bus

Clock speed 2,000 MHz 1,800 MHz

details

Athlon II X2 B28  vs
170u 
Threads 2 1
L2 cache 2 MB 1 MB
L2 cache per core 1 MB/core 1 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Operating temperature Unknown - 74°C Unknown - 80°C

overclocking

Overclocked clock speed 4.57 GHz 3.11 GHz
Overclocked clock speed (Water) 3.4 GHz 2 GHz
PassMark (Overclocked) 2,406.4 1,383.9
Overclocked clock speed (Air) 4.57 GHz 3.11 GHz

power consumption

TDP 65W 20W
Annual home energy cost 15.66 $/year 4.82 $/year
Annual commercial energy cost 56.94 $/year 17.52 $/year
Performance per watt 1.92 pt/W 3.3 pt/W
Typical power consumption 52.81W 16.25W
AMD Athlon II X2 B28
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AMD Athlon II 170u
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