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Differences What are the advantages of each

Front view of Intel Xeon X5670

Reasons to consider the
Intel Xeon X5670

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Much more l3 cache 12 MB vs 8 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
More cores 6 vs 4 2 more cores; run more applications at once
Much better overclocked clock speed (Air) 4.29 GHz vs 3 GHz Around 45% better overclocked clock speed (Air)
Supports more RAM 294,912 MB vs 32,768 MB Supports 9x more RAM
More threads 12 vs 8 4 more threads
Much better overclocked clock speed (Water) 4.5 GHz vs 3 GHz Around 50% better overclocked clock speed (Water)
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Front view of Intel Xeon E3-1135C v2

Reasons to consider the
Intel Xeon E3-1135C v2

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Higher clock speed 3 GHz vs 2.93 GHz Almost the same
Significantly lower typical power consumption 44.69W vs 77.19W More than 40% lower typical power consumption
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly lower annual commercial energy cost 48.18 $/year vs 83.22 $/year More than 40% lower annual commercial energy cost
Significantly lower annual home energy cost 13.25 $/year vs 22.89 $/year More than 40% lower annual home energy cost
Newer Jul, 2013 vs Mar, 2010 Release date over 3 years later

Features Key features of the Xeon X5670  vs E3-1135C v2 

clock speed

Xeon X5670
2.93 GHz

L3 cache

overclocked clock speed (air)

Xeon X5670
4.29 GHz

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Xeon X5670  vs
E3-1135C v2 
Clock speed 2.93 GHz 3 GHz
Cores Hexa core Quad core

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 95W 55W
Annual home energy cost 22.89 $/year 13.25 $/year
Annual commercial energy cost 83.22 $/year 48.18 $/year
Typical power consumption 77.19W 44.69W

bus

Architecture QPI FSB
Number of links 2 1
Transfer rate 6,400 MT/s 5,000 MT/s

details

Xeon X5670  vs
E3-1135C v2 
Architecture x86-64 x86-64
Threads 12 8
L3 cache 12 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 2 1

overclocking

Overclocked clock speed 4.29 GHz 3 GHz
Overclocked clock speed (Water) 4.5 GHz 3 GHz
Overclocked clock speed (Air) 4.29 GHz 3 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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 12,800 MB/s
Maximum memory size 294,912 MB 32,768 MB
Intel Xeon X5670
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Intel Xeon E3-1135C v2
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