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Differences What are the advantages of each

Front view of Intel Xeon E7320

Reasons to consider the
Intel Xeon E7320

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Much more l2 cache 4 MB vs 2 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 32 vs 4 28 supports more CPUs in SMP configuration
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Lower typical power consumption 65W vs 77.19W More than 15% lower typical power consumption
Lower annual commercial energy cost 70.08 $/year vs 83.22 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 19.27 $/year vs 22.89 $/year More than 15% lower annual home energy cost
Front view of Intel Xeon E5-4640

Reasons to consider the
Intel Xeon E5-4640

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Significantly higher clock speed 2.4 GHz vs 2.13 GHz Around 15% higher clock speed
Much better PassMark score 10,523 vs 2,413 More than 4.2x better PassMark score
Much better PassMark (Single core) score 1,423 vs 751 Around 90% better PassMark (Single core) score
More threads 16 vs 4 12 more threads
More cores 8 vs 4 Twice as many cores; run more applications at once
Significantly newer manufacturing process 32 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much better overclocked clock speed (Air) 2.63 GHz vs 2.13 GHz Around 25% better overclocked clock speed (Air)
Newer May, 2012 vs Sep, 2007 Release date over 4 years later
Significantly better overclocked clock speed (Water) 2.4 GHz vs 2.13 GHz Around 15% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon E7320 vs E5-4640

PassMark Data courtesy Passmark

Xeon E7320
2,413
Xeon E5-4640
10,523

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E7320  vs
E5-4640 
Clock speed 2.13 GHz 2.4 GHz
Cores Quad core Octa core
Socket type
604
LGA 2011

features

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

power consumption

TDP 80W 95W
Annual home energy cost 19.27 $/year 22.89 $/year
Annual commercial energy cost 70.08 $/year 83.22 $/year
Performance per watt 1.14 pt/W 1.83 pt/W
Typical power consumption 65W 77.19W

details

Xeon E7320  vs
E5-4640 
Architecture x86-64 x86-64
Threads 4 16
L2 cache 4 MB 2 MB
L2 cache per core 1 MB/core 0.25 MB/core
Manufacture process 65 nm 32 nm
Max CPUs 32 4
Voltage range 1 - 1.5V 0.6 - 1.35V

overclocking

Overclocked clock speed 2.13 GHz 2.63 GHz
Overclocked clock speed (Water) 2.13 GHz 2.4 GHz
Overclocked clock speed (Air) 2.13 GHz 2.63 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 2
Clock speed 1,066 MHz 4,000 MHz
Intel Xeon E7320
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Intel Xeon E5-4640
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