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Differences What are the advantages of each

Front view of Intel Xeon E5205

Reasons to consider the
Intel Xeon E5205

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Much more l2 cache 6 MB vs 1 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 3 MB/core vs 0.25 MB/core 12x more l2 cache per core
Much lower typical power consumption 52.81W vs 105.63W 2x lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much lower annual home energy cost 15.66 $/year vs 31.32 $/year 2x lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 113.88 $/year 2x lower annual commercial energy cost
Front view of Intel Core i7 930

Reasons to consider the
Intel Core i7 930

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Significantly higher clock speed 2.8 GHz vs 1.86 GHz More than 50% higher clock speed
More threads 8 vs 2 6 more threads
Better PassMark score 5,176 vs 1,401 Around 3.8x better PassMark score
Significantly better overclocked clock speed (Air) 4.21 GHz vs 3.25 GHz Around 30% better overclocked clock speed (Air)
More cores 4 vs 2 Twice as many cores; run more applications at once
Better geekbench 3 single core score 2,016 vs 1,562 Around 30% better geekbench 3 single core score
Much better overclocked clock speed (Water) 4.62 GHz vs 1.87 GHz Around 2.5x better overclocked clock speed (Water)
Newer Feb, 2010 vs Nov, 2007 Release date over 2 years later
Slightly better performance per dollar 0.62 pt/$ vs 0.56 pt/$ More than 10% better performance per dollar

Benchmarks Real world tests of Xeon E5205 vs Core i7 930

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5205
2,892
Core i7 930
7,828

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5205
1,562
Core i7 930
2,016

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5205
127,800 MB/s
Core i7 930
126,500 MB/s

PassMark Data courtesy Passmark

Xeon E5205
1,401
Core i7 930
5,176

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5205  vs
Core i7 930 
Clock speed 1.86 GHz 2.8 GHz
Cores Dual core Quad core
Socket type
LGA 771
LGA 1366

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 130W
Annual home energy cost 15.66 $/year 31.32 $/year
Annual commercial energy cost 56.94 $/year 113.88 $/year
Performance per watt 1.71 pt/W 1.45 pt/W
Typical power consumption 52.81W 105.63W

bus

Architecture FSB QPI
Number of links 1 1
Clock speed 1,066 MHz 2,400 MHz

details

Xeon E5205  vs
Core i7 930 
Architecture x86-64 x86-64
Threads 2 8
L2 cache 6 MB 1 MB
L2 cache per core 3 MB/core 0.25 MB/core
Manufacture process 45 nm 45 nm
Transistor count 410,000,000 731,000,000
Max CPUs 2 1
Clock multiplier 7 21
Voltage range 0.95 - 1.21V 0.8 - 1.38V
Operating temperature Unknown - 66°C Unknown - 67.9°C

overclocking

Overclocked clock speed 3.25 GHz 4.21 GHz
Overclocked clock speed (Water) 1.87 GHz 4.62 GHz
PassMark (Overclocked) 1,929.4 3,501.5
Overclocked clock speed (Air) 3.25 GHz 4.21 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 E5205
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Intel Core i7 930
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