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AMD Phenom II X4 850

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Front view of AMD Phenom II X4 850

Differences What are the advantages of each

Front view of AMD Phenom II X4 850

Reasons to consider the
AMD Phenom II X4 850

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Much higher clock speed 3.3 GHz vs 1.6 GHz More than 2x higher clock speed
Significantly 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 newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Significantly better PassMark (Single core) score 1,120 vs 470 Around 2.5x better PassMark (Single core) score
More cores 4 vs 2 Twice as many cores; run more applications at once
Better PassMark score 3,546 vs 877 More than 4x better PassMark score
More threads 4 vs 2 Twice as many threads
Much better overclocked clock speed (Water) 3.3 GHz vs 1.6 GHz More than 2x better overclocked clock speed (Water)
Front view of AMD Athlon 64 X2 42

Reasons to consider the
AMD Athlon 64 X2 42

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Much lower typical power consumption 16.25W vs 77.19W 4.8x lower typical power consumption
Significantly better overclocked clock speed (Air) 2.11 GHz vs 1.1 GHz More than 90% better overclocked clock speed (Air)
Much lower annual home energy cost 4.82 $/year vs 22.89 $/year 4.8x lower annual home energy cost
Much lower annual commercial energy cost 17.52 $/year vs 83.22 $/year 4.8x lower annual commercial energy cost
Better performance per watt 2.21 pt/W vs 1.17 pt/W Around 90% better performance per watt

Benchmarks Real world tests of Phenom II X4 850 vs Athlon 64 X2 42

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Phenom II X4 850  vs
Athlon 64 X2 42 
Clock speed 3.3 GHz 1.6 GHz
Cores Quad core Dual core
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes No
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!

details

Phenom II X4 850  vs
Athlon 64 X2 42 
Threads 4 2
L2 cache 2 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 45 nm 65 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 1.1 GHz 2.11 GHz
Overclocked clock speed (Water) 3.3 GHz 1.6 GHz
PassMark (Overclocked) 212.8 396.6
Overclocked clock speed (Air) 1.1 GHz 2.11 GHz

power consumption

TDP 95W 20W
Annual home energy cost 22.89 $/year 4.82 $/year
Annual commercial energy cost 83.22 $/year 17.52 $/year
Performance per watt 1.17 pt/W 2.21 pt/W
Typical power consumption 77.19W 16.25W
AMD Phenom II X4 850
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AMD Athlon 64 X2 42
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