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Differences What are the advantages of each

Front view of Intel Xeon E5320

Reasons to consider the
Intel Xeon E5320

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Much more l2 cache 8 MB vs 1 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
Much lower typical power consumption 65W vs 135.63W 2.1x lower typical power consumption
Much more l2 cache per core 2 MB/core vs 0.25 MB/core 8x more l2 cache per core
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much lower annual home energy cost 19.27 $/year vs 48.38 $/year 2.5x lower annual home energy cost
Much lower annual commercial energy cost 70.08 $/year vs 134.55 $/year Around 50% lower annual commercial energy cost
Front view of Intel Core i7 920

Reasons to consider the
Intel Core i7 920

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Significantly higher clock speed 2.66 GHz vs 1.86 GHz Around 45% higher clock speed
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly better geekbench 3 single core score 1,959 vs 1,028 More than 90% better geekbench 3 single core score
Much better overclocked clock speed (Air) 4.22 GHz vs 2.81 GHz More than 50% better overclocked clock speed (Air)
More threads 8 vs 4 Twice as many threads
Much better overclocked clock speed (Water) 4.24 GHz vs 1.87 GHz More than 2.2x better overclocked clock speed (Water)
Newer Oct, 2008 vs Nov, 2006 Release date over 1 years later

Benchmarks Real world tests of Xeon E5320 vs Core i7 920

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5320
6,799
Core i7 920
7,014

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5320
1,028
Core i7 920
1,959

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5320
93,300 MB/s
Core i7 920
143,700 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5320
3,058
Core i7 920
7,125

GeekBench

Xeon E5320
3,172
Core i7 920
9,242

PassMark Data courtesy Passmark

Xeon E5320
2,288
Core i7 920
4,958

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5320  vs
Core i7 920 
Clock speed 1.86 GHz 2.66 GHz
Cores Quad 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 80W 130W
Annual home energy cost 19.27 $/year 48.38 $/year
Annual commercial energy cost 70.08 $/year 134.55 $/year
Performance per watt 1.52 pt/W 1.21 pt/W
Typical power consumption 65W 135.63W

memory controller

Memory controller Built-in Built-in
Supports ECC No No

details

Xeon E5320  vs
Core i7 920 
Architecture x86-64 x86-64
Threads 4 8
L2 cache 8 MB 1 MB
L2 cache per core 2 MB/core 0.25 MB/core
Manufacture process 65 nm 45 nm
Transistor count 582,000,000 731,000,000
Max CPUs 2 1
Clock multiplier 7 20
Voltage range 1 - 1.5V 0.8 - 1.38V
Operating temperature Unknown - 66°C Unknown - 67.9°C

overclocking

Overclocked clock speed 2.81 GHz 4.22 GHz
Overclocked clock speed (Water) 1.87 GHz 4.24 GHz
Overclocked clock speed (Air) 2.81 GHz 4.22 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

bus

Architecture FSB QPI
Number of links 1 1
Clock speed 1,066 MHz 2,400 MHz
Intel Xeon E5320
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Intel Core i7 920
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