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Differences What are the advantages of each

Front view of Intel Xeon 3075

Reasons to consider the
Intel Xeon 3075

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Significantly lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Much more l2 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l2 cache per core
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
Front view of Intel Core2 Quad Q9400

Reasons to consider the
Intel Core2 Quad Q9400

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Much more l2 cache 6 MB vs 4 MB 50% more l2 cache; more data can be stored in the l2 cache for quick access later
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 4 vs 2 Twice as many cores; run more applications at once
Better PassMark score 3,379 vs 1,840 Around 85% better PassMark score
More threads 4 vs 2 Twice as many threads
Much better overclocked clock speed (Water) 4.15 GHz vs 2.67 GHz More than 55% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon 3075 vs Core2 Quad Q9400

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon 3075  vs
Core2 Quad Q9400 
Clock speed 2.67 GHz 2.66 GHz
Cores Dual core Quad core
Socket type
LGA 775

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

bus

Clock speed 1,333 MHz 1,333 MHz

details

Xeon 3075  vs
Core2 Quad Q9400 
Threads 2 4
L2 cache 4 MB 6 MB
L2 cache per core 2 MB/core 1.5 MB/core
Manufacture process 65 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.43 GHz 3.54 GHz
Overclocked clock speed (Water) 2.67 GHz 4.15 GHz
Overclocked clock speed (Air) 3.43 GHz 3.54 GHz

power consumption

TDP 65W 95W
Annual home energy cost 15.66 $/year 22.89 $/year
Annual commercial energy cost 56.94 $/year 83.22 $/year
Performance per watt 1.49 pt/W 1.51 pt/W
Typical power consumption 52.81W 77.19W
Intel Xeon 3075
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Intel Core2 Quad Q9400
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