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Differences What are the advantages of each

Front view of AMD Opteron 848

Reasons to consider the
AMD Opteron 848

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Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Lower typical power consumption 72.31W vs 77.19W More than 5% lower typical power consumption
Lower annual home energy cost 21.44 $/year vs 22.89 $/year More than 5% lower annual home energy cost
Lower annual commercial energy cost 77.96 $/year vs 83.22 $/year More than 5% lower annual commercial energy cost
Front view of AMD Athlon II X4 640

Reasons to consider the
AMD Athlon II X4 640

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Much newer manufacturing process 45 nm vs 130 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 3 GHz vs 2.2 GHz More than 35% 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 better geekbench 3 Multi-Core score 5,434 vs 958 Around 5.8x better geekbench 3 Multi-Core score
More cores 4 vs 1 3 more cores; run more applications at once
Newer May, 2010 vs Nov, 2003 Release date over 6 years later
Significantly better overclocked clock speed (Air) 3.57 GHz vs 2.4 GHz Around 50% better overclocked clock speed (Air)
Better geekbench 3 single core score 1,559 vs 972 More than 60% better geekbench 3 single core score
More threads 4 vs 1 3 more threads
Much better overclocked clock speed (Water) 3.89 GHz vs 2.2 GHz More than 75% better overclocked clock speed (Water)

Benchmarks Real world tests of Opteron 848 vs Athlon II X4 640

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

Opteron 848
123,000 MB/s
Athlon II X4 640
121,100 MB/s

Specifications Full list of technical specs

summary

Opteron 848  vs
Athlon II X4 640 
Clock speed 2.2 GHz 3 GHz
Cores Single core Quad core
Socket type
940
AM3

features

Has a NX bit Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

details

Opteron 848  vs
Athlon II X4 640 
Threads 1 4
L2 cache 1 MB 2 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 130 nm 45 nm
Max CPUs 8 1
Voltage range 1.5 - UnknownV 1.05 - 1.4V
Operating temperature 0 - 71°C Unknown - 71°C

overclocking

Overclocked clock speed 2.4 GHz 3.57 GHz
Overclocked clock speed (Water) 2.2 GHz 3.89 GHz
Overclocked clock speed (Air) 2.4 GHz 3.57 GHz

power consumption

TDP 89W 95W
Annual home energy cost 21.44 $/year 22.89 $/year
Annual commercial energy cost 77.96 $/year 83.22 $/year
Performance per watt 1.15 pt/W 1.54 pt/W
Typical power consumption 72.31W 77.19W
AMD Opteron 848
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AMD Athlon II X4 640
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