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Differences What are the advantages of each

Front view of Intel Xeon E5-2660

Reasons to consider the
Intel Xeon E5-2660

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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
Higher clock speed 2.2 GHz vs 2.13 GHz Around 5% higher clock speed
Much better overclocked clock speed (Water) 3.17 GHz vs 2.67 GHz Around 20% better overclocked clock speed (Water)
Front view of Intel Xeon 5300 E5330

Reasons to consider the
Intel Xeon 5300 E5330

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Much more l2 cache 8 MB vs 2 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 2 MB/core vs 0.25 MB/core 8x more l2 cache per core
Significantly better overclocked clock speed (Air) 2.91 GHz vs 2.65 GHz Around 10% better overclocked clock speed (Air)

Features Key features of the Xeon E5-2660  vs 5300 E5330 

clock speed

Xeon E5-2660
2.2 GHz
Xeon 5300 E5330
2.13 GHz

L2 cache

overclocked clock speed (air)

Xeon E5-2660
2.65 GHz
Xeon 5300 E5330
2.91 GHz

overclocked clock speed (water)

Xeon E5-2660
3.17 GHz
Xeon 5300 E5330
2.67 GHz

Specifications Full list of technical specs

summary

Xeon E5-2660  vs
5300 E5330 
Clock speed 2.2 GHz 2.13 GHz
Cores Octa core Quad core
Socket type
LGA 2011
LGA 771

features

Has a NX bit Yes 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

bus

Clock speed 4,000 MHz 1,066 MHz

details

Xeon E5-2660  vs
5300 E5330 
Threads 16 4
L2 cache 2 MB 8 MB
L2 cache per core 0.25 MB/core 2 MB/core
Manufacture process 32 nm 65 nm
Max CPUs 2 2

overclocking

Overclocked clock speed 2.65 GHz 2.91 GHz
Overclocked clock speed (Water) 3.17 GHz 2.67 GHz
Overclocked clock speed (Air) 2.65 GHz 2.91 GHz

power consumption

Typical power consumption 77.19W N/A
Intel Xeon E5-2660
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Intel Xeon 5300 E5330
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