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Differences What are the advantages of each

Front view of Intel Xeon E5450

Reasons to consider the
Intel Xeon E5450

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Much more l2 cache 12 MB vs 4 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Higher clock speed 3 GHz vs 2.6 GHz More than 15% higher clock speed
Much more l2 cache per core 3 MB/core vs 2 MB/core 50% more l2 cache per core
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Lower typical power consumption 65W vs 81.25W 20% lower typical power consumption
Better geekbench 3 Multi-Core score 6,390 vs 4,888 More than 30% better geekbench 3 Multi-Core score
More cores 4 vs 2 Twice as many cores; run more applications at once
Better PassMark (Single core) score 1,270 vs 904 More than 40% better PassMark (Single core) score
Much better overclocked clock speed (Water) 4.1 GHz vs 2.6 GHz Around 60% better overclocked clock speed (Water)
Better performance per watt 2.1 pt/W vs 1.32 pt/W Around 60% better performance per watt
Lower annual home energy cost 19.27 $/year vs 24.09 $/year More than 20% lower annual home energy cost
Lower annual commercial energy cost 70.08 $/year vs 87.6 $/year Around 20% lower annual commercial energy cost
Front view of AMD Athlon II X4 631

Reasons to consider the
AMD Athlon II X4 631

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Jan, 2012 vs Nov, 2007 Release date over 4 years later
Slightly better overclocked clock speed (Air) 4.03 GHz vs 3.83 GHz More than 5% better overclocked clock speed (Air)

Benchmarks Real world tests of Xeon E5450 vs Athlon II X4 631

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 E5450
128,600 MB/s
Athlon II X4 631
109,100 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 E5450  vs
Athlon II X4 631 
Clock speed 3 GHz 2.6 GHz
Cores Quad core Dual core
Socket type
LGA 771
FM1

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
AMD64
SSE4.1
AMD-V
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 100W
Annual home energy cost 19.27 $/year 24.09 $/year
Annual commercial energy cost 70.08 $/year 87.6 $/year
Performance per watt 2.1 pt/W 1.32 pt/W
Typical power consumption 65W 81.25W

details

Xeon E5450  vs
Athlon II X4 631 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 12 MB 4 MB
L2 cache per core 3 MB/core 2 MB/core
Manufacture process 45 nm 32 nm
Transistor count 820,000,000 1,178,000,000
Max CPUs 2 1
Voltage range 0.85 - 1.35V 0.45 - 1.41V
Operating temperature Unknown - 67°C Unknown - 70.1°C

overclocking

Overclocked clock speed 3.83 GHz 4.03 GHz
Overclocked clock speed (Water) 4.1 GHz 2.6 GHz
Overclocked clock speed (Air) 3.83 GHz 4.03 GHz

integrated graphics

GPU None GPU
Label N/A AMD Radeon Aug 15, 2011
Intel Xeon E5450
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AMD Athlon II X4 631
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