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Differences What are the advantages of each

Front view of Intel Xeon EC5509

Reasons to consider the
Intel Xeon EC5509

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Much lower typical power consumption 69.06W vs 112.55W Around 40% lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Slightly more l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Much lower annual home energy cost 20.48 $/year vs 41.29 $/year 2x lower annual home energy cost
Much lower annual commercial energy cost 74.46 $/year vs 110.03 $/year More than 30% lower annual commercial energy cost
Higher Maximum operating temperature 77.6 °C vs 72.6 °C More than 5% higher Maximum operating temperature
Front view of Intel Core i5 2500K

Reasons to consider the
Intel Core i5 2500K

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Much higher clock speed 3.3 GHz vs 2 GHz Around 65% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Jan, 2011 vs Feb, 2010 Release date 10 months later

Features Key features of the Xeon EC5509  vs Core i5 2500K 

clock speed

Xeon EC5509
2 GHz
Core i5 2500K
3.3 GHz

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Xeon EC5509  vs
Core i5 2500K 
Clock speed 2 GHz 3.3 GHz
Cores Quad core Quad core
Socket type
LGA 1366
LGA 1155

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 85W 95W
Annual home energy cost 20.48 $/year 41.29 $/year
Annual commercial energy cost 74.46 $/year 110.03 $/year
Typical power consumption 69.06W 112.55W

bus

Architecture QPI DMI
Number of links 1 1
Transfer rate 4,800 MT/s 5,000 MT/s

details

Xeon EC5509  vs
Core i5 2500K 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 2 1
Voltage range 1 - 1.5V 1.2 - 1.5V
Operating temperature Unknown - 77.6°C 5 - 72.6°C

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 3000
Latest DirectX N/A 10.1
Number of displays supported N/A 2
GPU clock speed N/A 850 MHz
Turbo clock speed N/A 1,100 MHz
3DMark06 N/A 5,275

memory controller

Memory controller Built-in Built-in
Channels Triple Channel Dual Channel
Supports ECC Yes No
Intel Xeon EC5509
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Intel Core i5 2500K
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