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Differences What are the advantages of each

Front view of AMD Phenom X3 8450

Reasons to consider the
AMD Phenom X3 8450

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Much better geekbench 3 AES single core score 80,100 MB/s vs 44.55 MB/s Around 1798x better geekbench 3 AES single core score
Much newer manufacturing process 65 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 2.1 GHz vs 1.8 GHz More than 15% higher clock speed
Significantly better overclocked clock speed (Air) 2.66 GHz vs 1.8 GHz Around 50% better overclocked clock speed (Air)
Newer Apr, 2008 vs Apr, 2005 Release date over 3 years later
More cores 3 vs 2 1 more cores; run more applications at once
Better overclocked clock speed (Water) 2.1 GHz vs 1.8 GHz More than 15% better overclocked clock speed (Water)
Front view of AMD Opteron 865

Reasons to consider the
AMD Opteron 865

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Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration
Significantly better geekbench 3 Multi-Core score 4,726 vs 2,722 Around 75% better geekbench 3 Multi-Core score
Significantly more l2 cache per core 1 MB/core vs 0.67 MB/core More than 50% more l2 cache per core

Benchmarks Real world tests of Phenom X3 8450 vs Opteron 865

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 X3 8450
80,100 MB/s
Opteron 865
44.55 MB/s

Specifications Full list of technical specs

summary

Phenom X3 8450  vs
Opteron 865 
Clock speed 2.1 GHz 1.8 GHz
Cores Tri core Dual core
Socket type
AM2+
940

features

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

details

Phenom X3 8450  vs
Opteron 865 
Threads 3 2
L2 cache 2 MB 2 MB
L2 cache per core 0.67 MB/core 1 MB/core
Manufacture process 65 nm 90 nm
Max CPUs 1 8
Operating temperature Unknown - 70°C 0 - 67°C

overclocking

Overclocked clock speed 2.66 GHz 1.8 GHz
Overclocked clock speed (Water) 2.1 GHz 1.8 GHz
Overclocked clock speed (Air) 2.66 GHz 1.8 GHz

power consumption

TDP 95W 95W
Annual home energy cost 22.89 $/year 22.89 $/year
Annual commercial energy cost 83.22 $/year 83.22 $/year
Performance per watt 0.94 pt/W 0.67 pt/W
Typical power consumption 77.19W 77.19W
AMD Phenom X3 8450
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AMD Opteron 865
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