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Differences What are the advantages of each

Front view of Intel Xeon L5640

Reasons to consider the
Intel Xeon L5640

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Higher clock speed 2.26 GHz vs 2.13 GHz More than 5% higher clock speed
Higher turbo clock speed 2.8 GHz vs 2.53 GHz More than 10% higher turbo clock speed
Much lower typical power consumption 48.75W vs 85.31W Around 45% lower typical power consumption
Much lower annual commercial energy cost 52.56 $/year vs 91.98 $/year Around 45% lower annual commercial energy cost
Much lower annual home energy cost 14.45 $/year vs 25.29 $/year Around 45% lower annual home energy cost
Slightly more l2 cache per core 0.33 MB/core vs 0.3 MB/core More than 10% more l2 cache per core
Front view of Intel Xeon E7-8867L

Reasons to consider the
Intel Xeon E7-8867L

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Supports more RAM 4,194,304 MB vs 294,912 MB Supports around 14.2x more RAM
Much more l3 cache 30 MB vs 12 MB 2.5x more l3 cache; more data can be stored in the l3 cache for quick access later
Much more l2 cache 3 MB vs 2 MB 50% more l2 cache; more data can be stored in the l2 cache for quick access later
More threads 20 vs 12 8 more threads
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Much more l3 cache per core 3 MB/core vs 2 MB/core 50% more l3 cache per core
Newer Apr, 2011 vs Mar, 2010 Release date over 1 years later

Features Key features of the Xeon L5640  vs E7-8867L 

clock speed

Xeon L5640
2.26 GHz
Xeon E7-8867L
2.13 GHz

turbo clock speed

Xeon L5640
2.8 GHz
Xeon E7-8867L
2.53 GHz

L2 cache

L3 cache

TDP

Specifications Full list of technical specs

summary

Xeon L5640  vs
E7-8867L 
Clock speed 2.26 GHz 2.13 GHz
Turbo clock speed 2.8 GHz 2.53 GHz
Cores Hexa core Deca core
Socket type
LGA 1366
LGA 1567

features

Has a NX bit Yes Yes
Supports trusted computing 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 60W 105W
Annual home energy cost 14.45 $/year 25.29 $/year
Annual commercial energy cost 52.56 $/year 91.98 $/year
Typical power consumption 48.75W 85.31W

bus

Architecture QPI QPI
Number of links 2 1
Data rate 46,928 MB/s 25,600 MB/s
Transfer rate 5,860 MT/s 6,400 MT/s
Clock speed 2,930 MHz 3,200 MHz

details

Xeon L5640  vs
E7-8867L 
Architecture x86-64 x86-64
Threads 12 20
L2 cache 2 MB 3 MB
L2 cache per core 0.33 MB/core 0.3 MB/core
L3 cache 12 MB 30 MB
L3 cache per core 2 MB/core 3 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 8
Clock multiplier 17 16
Operating temperature Unknown - 69.4°C Unknown - 64°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
DDR3-800
DDR
Channels Triple Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 25,600 MB/s
Maximum memory size 294,912 MB 4,194,304 MB
Intel Xeon L5640
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Intel Xeon E7-8867L
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