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Intel Xeon E5-2640

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Front view of Intel Xeon E5-2640

Differences What are the advantages of each

Front view of Intel Xeon E5-2640

Reasons to consider the
Intel Xeon E5-2640

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Significantly better performance per dollar 0.81 pt/$ vs 0.44 pt/$ More than 80% better performance per dollar
Significantly better performance per watt 7.66 pt/W vs 4.64 pt/W More than 65% better performance per watt
Better overclocked clock speed (Air) 2.9 GHz vs 2.4 GHz More than 20% better overclocked clock speed (Air)
Front view of Intel E5-2640V4

Reasons to consider the
Intel E5-2640V4

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Much newer manufacturing process 14 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly more l3 cache 25 MB vs 15 MB More than 65% more l3 cache; more data can be stored in the l3 cache for quick access later
Higher turbo clock speed 3.4 GHz vs 3 GHz Around 15% higher turbo clock speed
Supports more RAM 1,572,864 MB vs 393,216 MB Supports 4x more RAM
More cores 10 vs 6 4 more cores; run more applications at once
More threads 20 vs 12 8 more threads
Newer Jan, 2016 vs Mar, 2012 Release date over 3 years later
Slightly lower typical power consumption 73.13W vs 77.19W More than 5% lower typical power consumption
Slightly lower annual home energy cost 21.68 $/year vs 22.89 $/year More than 5% lower annual home energy cost
Slightly lower annual commercial energy cost 78.84 $/year vs 83.22 $/year More than 5% lower annual commercial energy cost

Benchmarks Real world tests of Xeon E5-2640 vs E5-2640V4

PassMark Data courtesy Passmark

Xeon E5-2640
15,348
E5-2640V4
15,348

PassMark (Single Core)

Xeon E5-2640
1,854
E5-2640V4
1,854

Specifications Full list of technical specs

summary

Xeon E5-2640  vs
E5-2640V4 
Clock speed 2.5 GHz 2.4 GHz
Turbo clock speed 3 GHz 3.4 GHz
Cores Hexa core Deca core

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 95W 90W
Annual home energy cost 22.89 $/year 21.68 $/year
Annual commercial energy cost 83.22 $/year 78.84 $/year
Performance per watt 7.66 pt/W 4.64 pt/W
Typical power consumption 77.19W 73.13W

bus

Architecture QPI QPI
Number of links 2 2
Data rate 57,600 MB/s 64,000 MB/s
Transfer rate 7,200 MT/s 8,000 MT/s
Clock speed 3,600 MHz 4,000 MHz

details

Xeon E5-2640  vs
E5-2640V4 
Architecture x86-64 x86-64
Threads 12 20
L3 cache 15 MB 25 MB
L3 cache per core 2.5 MB/core 2.5 MB/core
Manufacture process 32 nm 14 nm
Max CPUs 2 2
Operating temperature Unknown - 73°C Unknown - 76°C

overclocking

Overclocked clock speed 2.9 GHz 2.4 GHz
Overclocked clock speed (Water) 2.5 GHz 2.4 GHz
Overclocked clock speed (Air) 2.9 GHz 2.4 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
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum memory size 393,216 MB 1,572,864 MB
Intel Xeon E5-2640
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Intel E5-2640V4
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