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Differences What are the advantages of each

Front view of Intel Xeon X7550

Reasons to consider the
Intel Xeon X7550

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Significantly more l3 cache 18 MB vs 15 MB 20% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 16 vs 12 4 more threads
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Better overclocked clock speed (Air) 2.4 GHz vs 2.28 GHz More than 5% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 2.4 GHz vs 2 GHz Around 20% better overclocked clock speed (Water)
Front view of Intel Xeon E5-2620

Reasons to consider the
Intel Xeon E5-2620

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Significantly lower typical power consumption 77.19W vs 105.63W More than 25% lower typical power consumption
Higher turbo clock speed 2.5 GHz vs 2.4 GHz Around 5% higher turbo clock speed
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
More l3 cache per core 2.5 MB/core vs 2.25 MB/core More than 10% more l3 cache per core
Significantly lower annual commercial energy cost 83.22 $/year vs 113.88 $/year More than 25% lower annual commercial energy cost
Significantly lower annual home energy cost 22.89 $/year vs 31.32 $/year More than 25% lower annual home energy cost
Newer Mar, 2012 vs Mar, 2010 Release date over 1 years later

Features Key features of the Xeon X7550  vs E5-2620 

clock speed

Xeon X7550
2 GHz
Xeon E5-2620
2 GHz

turbo clock speed

Xeon X7550
2.4 GHz
Xeon E5-2620
2.5 GHz

L2 cache

L3 cache

Xeon X7550
18 MB
Xeon E5-2620
15 MB

overclocked clock speed (air)

Xeon X7550
2.4 GHz
Xeon E5-2620
2.28 GHz

overclocked clock speed (water)

Xeon X7550
2.4 GHz
Xeon E5-2620
2 GHz

Specifications Full list of technical specs

summary

Xeon X7550  vs
E5-2620 
Clock speed 2 GHz 2 GHz
Turbo clock speed 2.4 GHz 2.5 GHz
Cores Octa core Hexa core
Socket type
LGA 1567
LGA 2011

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

power consumption

TDP 130W 95W
Annual home energy cost 31.32 $/year 22.89 $/year
Annual commercial energy cost 113.88 $/year 83.22 $/year
Typical power consumption 105.63W 77.19W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
DDR3-800
DDR

details

Xeon X7550  vs
E5-2620 
Threads 16 12
L2 cache 2 MB 2 MB
L2 cache per core 0.25 MB/core 0.33 MB/core
L3 cache 18 MB 15 MB
L3 cache per core 2.25 MB/core 2.5 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 8 2
Voltage range 0.68 - 1.35V 0.6 - 1.35V
Operating temperature Unknown - 69°C Unknown - 77.4°C

overclocking

Overclocked clock speed 2.4 GHz 2.28 GHz
Overclocked clock speed (Water) 2.4 GHz 2 GHz
Overclocked clock speed (Air) 2.4 GHz 2.28 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 QPI QPI
Number of links 4 2
Data rate 102,400 MB/s 57,600 MB/s
Transfer rate 6,400 MT/s 7,200 MT/s
Clock speed 3,200 MHz 3,600 MHz
Intel Xeon X7550
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Intel Xeon E5-2620
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