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Differences What are the advantages of each

Front view of Intel Xeon L5240

Reasons to consider the
Intel Xeon L5240

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Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Significantly lower typical power consumption 32.5W vs 52.81W Around 40% lower typical power consumption
Significantly lower annual home energy cost 9.64 $/year vs 15.66 $/year Around 40% lower annual home energy cost
Significantly lower annual commercial energy cost 35.04 $/year vs 56.94 $/year Around 40% lower annual commercial energy cost
Newer Jul, 2008 vs Jan, 2008 Release date 6 months later
Front view of Intel Core2 Duo E8500

Reasons to consider the
Intel Core2 Duo E8500

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Slightly higher clock speed 3.16 GHz vs 3 GHz More than 5% higher clock speed
Much better performance per dollar 0.63 pt/$ vs 0.13 pt/$ Around 4.8x better performance per dollar
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly higher Maximum operating temperature 72.4 °C vs 56 °C Around 30% higher Maximum operating temperature
Better overclocked clock speed (Air) 4.46 GHz vs 4.05 GHz Around 10% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.42 GHz vs 3 GHz More than 45% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon L5240 vs Core2 Duo E8500

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 L5240
128.5 MB/s
Core2 Duo E8500
129,700 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon L5240  vs
Core2 Duo E8500 
Clock speed 3 GHz 3.16 GHz
Cores Dual core Dual core
Socket type
LGA 771
LGA 775

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 40W 65W
Annual home energy cost 9.64 $/year 15.66 $/year
Annual commercial energy cost 35.04 $/year 56.94 $/year
Performance per watt 2.22 pt/W 1.93 pt/W
Typical power consumption 32.5W 52.81W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,333 MHz 1,333 MHz

details

Xeon L5240  vs
Core2 Duo E8500 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 6 MB 6 MB
L2 cache per core 3 MB/core 3 MB/core
Manufacture process 45 nm 45 nm
Transistor count 410,000,000 410,000,000
Max CPUs 2 1
Clock multiplier 9 9
Voltage range 0.85 - 1.35V 0.85 - 1.36V
Operating temperature Unknown - 56°C Unknown - 72.4°C

overclocking

Overclocked clock speed 4.05 GHz 4.46 GHz
Overclocked clock speed (Water) 3 GHz 4.42 GHz
Overclocked clock speed (Air) 4.05 GHz 4.46 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A
Intel Xeon L5240
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Intel Core2 Duo E8500
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