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Intel Xeon E5 2640 v2

Front view of Intel Xeon E5 2640 v2
Front view of Intel Xeon E5-2640

Intel Xeon E5-2640

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Differences What are the advantages of each

Front view of Intel Xeon E5 2640 v2

Reasons to consider the
Intel Xeon E5 2640 v2

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Much more l3 cache 20 MB vs 15 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Much better performance per dollar 1.14 pt/$ vs 0.81 pt/$ More than 40% better performance per dollar
Supports more RAM 786,432 MB vs 393,216 MB Supports 2x more RAM
More threads 16 vs 12 4 more threads
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Front view of Intel Xeon E5-2640

Reasons to consider the
Intel Xeon E5-2640

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Much higher clock speed 2.5 GHz vs 2 GHz 25% higher clock speed
Significantly higher turbo clock speed 3 GHz vs 2.5 GHz 20% higher turbo clock speed
Much better overclocked clock speed (Air) 2.9 GHz vs 2.55 GHz Around 15% better overclocked clock speed (Air)
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Much better overclocked clock speed (Water) 2.5 GHz vs 2 GHz 25% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon E5 2640 v2 vs E5-2640

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5 2640 v2
17,132
Xeon E5-2640
9,664

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5 2640 v2
2,004
Xeon E5-2640
2,099

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5 2640 v2
1,385,000 MB/s
Xeon E5-2640
1,400,000 MB/s

Specifications Full list of technical specs

summary

 Xeon E5 2640 v2  vs
E5-2640 
Clock speed 2 GHz 2.5 GHz
Turbo clock speed 2.5 GHz 3 GHz
Cores Octa core Hexa core
Socket type
LGA 2011

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

power consumption
TDP 95W 95W
Annual home energy cost 22.89 $/year 22.89 $/year
Annual commercial energy cost 83.22 $/year 83.22 $/year
Performance per watt 10.5 pt/W 7.66 pt/W
Typical power consumption 77.19W 77.19W

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

details

 Xeon E5 2640 v2  vs
E5-2640 
Architecture x86-64 x86-64
Threads 16 12
L2 cache 2 MB 2 MB
L2 cache per core 0.25 MB/core 0.33 MB/core
L3 cache 20 MB 15 MB
L3 cache per core 2.5 MB/core 2.5 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 2 2
Clock multiplier 20 30
Operating temperature Unknown - 75°C Unknown - 73°C

overclocking
Overclocked clock speed 2.55 GHz 2.9 GHz
Overclocked clock speed (Water) 2 GHz 2.5 GHz
Overclocked clock speed (Air) 2.55 GHz 2.9 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
Memory type
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 25,600 MB/s 42,666.64 MB/s
Maximum memory size 786,432 MB 393,216 MB
Intel Xeon E5 2640 v2
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Intel Xeon E5-2640
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