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Differences What are the advantages of each

Front view of Intel Xeon X5650

Reasons to consider the
Intel Xeon X5650

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Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
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 higher Maximum operating temperature 81.3 °C vs 77.6 °C Around 5% higher Maximum operating temperature
Higher clock speed 2.66 GHz vs 2.53 GHz More than 5% higher clock speed
More threads 12 vs 8 4 more threads
Higher turbo clock speed 3.06 GHz vs 2.93 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
Front view of Intel Xeon EC5549

Reasons to consider the
Intel Xeon EC5549

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Lower typical power consumption 69.06W vs 77.19W More than 10% lower typical power consumption
Lower annual commercial energy cost 74.46 $/year vs 83.22 $/year More than 10% lower annual commercial energy cost
Lower annual home energy cost 20.48 $/year vs 22.89 $/year More than 10% lower annual home energy cost

Features Key features of the Xeon X5650  vs EC5549 

clock speed

Xeon X5650
2.66 GHz
Xeon EC5549
2.53 GHz

turbo clock speed

Xeon X5650
3.06 GHz
Xeon EC5549
2.93 GHz

L2 cache

L3 cache

Xeon X5650
12 MB

TDP

Specifications Full list of technical specs

summary

Xeon X5650  vs
EC5549 
Clock speed 2.66 GHz 2.53 GHz
Turbo clock speed 3.06 GHz 2.93 GHz
Cores Hexa core Quad core
Socket type
LGA 1366

features

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

power consumption

TDP 95W 85W
Annual home energy cost 22.89 $/year 20.48 $/year
Annual commercial energy cost 83.22 $/year 74.46 $/year
Typical power consumption 77.19W 69.06W

bus

Architecture QPI QPI
Number of links 2 1
Data rate 51,200 MB/s 23,480 MB/s
Transfer rate 6,400 MT/s 5,870 MT/s
Clock speed 3,200 MHz 2,935 MHz

details

Xeon X5650  vs
EC5549 
Architecture x86-64 x86-64
Threads 12 8
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 12 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 2
Voltage range 0.75 - 1.35V 1 - 1.5V
Operating temperature Unknown - 81.3°C Unknown - 77.6°C

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 Triple Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 19,200 MB/s
Intel Xeon X5650
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Intel Xeon EC5549
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