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Differences What are the advantages of each

Front view of Intel Xeon E3-1280

Reasons to consider the
Intel Xeon E3-1280

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Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better PassMark score 9,720 vs 2,173 Around 4.5x better PassMark score
Significantly better PassMark (Single core) score 2,235 vs 1,233 More than 80% better PassMark (Single core) score
More threads 8 vs 2 6 more threads
More cores 4 vs 2 Twice as many cores; run more applications at once
Slightly better performance per watt 2.77 pt/W vs 2.14 pt/W Around 30% better performance per watt
Front view of AMD Athlon II X2 280

Reasons to consider the
AMD Athlon II X2 280

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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 more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Significantly lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Better overclocked clock speed (Air) 4.33 GHz vs 3.6 GHz More than 20% better overclocked clock speed (Air)
Newer Jan, 2013 vs Apr, 2011 Release date over 1 years later
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost

Benchmarks Real world tests of Xeon E3-1280 vs Athlon II X2 280

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

Xeon E3-1280
4,940 MB/s
Athlon II X2 280
144,650 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1280  vs
Athlon II X2 280 
Clock speed 3.5 GHz 3.6 GHz
Cores Quad core Dual core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

details

Xeon E3-1280  vs
Athlon II X2 280 
Threads 8 2
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.6 GHz 4.33 GHz
Overclocked clock speed (Water) 3.6 GHz 3.6 GHz
Overclocked clock speed (Air) 3.6 GHz 4.33 GHz

power consumption

TDP 95W 65W
Annual home energy cost 22.89 $/year 15.66 $/year
Annual commercial energy cost 83.22 $/year 56.94 $/year
Performance per watt 2.77 pt/W 2.14 pt/W
Typical power consumption 77.19W 52.81W
Intel Xeon E3-1280
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AMD Athlon II X2 280
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