CPUBoss Review Our evaluation of E5-2660 vs 2640 v2 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

5.4

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon E5 2640 v2 

CPUBoss recommends the Intel Xeon E5 2640 v2  based on its value.

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VS

Differences What are the advantages of each

Front view of Intel Xeon E5-2660

Reasons to consider the
Intel Xeon E5-2660

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Significantly higher turbo clock speed 3 GHz vs 2.5 GHz 20% higher turbo clock speed
Significantly higher clock speed 2.2 GHz vs 2 GHz More than 10% higher clock speed
Much better overclocked clock speed (Water) 3.17 GHz vs 2 GHz Around 60% better overclocked clock speed (Water)
Better overclocked clock speed (Air) 2.65 GHz vs 2.55 GHz Around 5% better overclocked clock speed (Air)
Front view of Intel Xeon E5 2640 v2

Reasons to consider the
Intel Xeon E5 2640 v2

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Much better performance per dollar 1.14 pt/$ vs 0.54 pt/$ More than 2x better performance per dollar
Supports more RAM 786,432 MB vs 393,216 MB Supports 2x more RAM
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor

Benchmarks Real world tests of Xeon E5-2660 vs E5 2640 v2

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-2660
1,540,000 MB/s
Xeon E5 2640 v2
1,385,000 MB/s

Specifications Full list of technical specs

summary

Xeon E5-2660  vs
E5 2640 v2 
Clock speed 2.2 GHz 2 GHz
Turbo clock speed 3 GHz 2.5 GHz
Cores Octa core Octa 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 7.69 pt/W 10.5 pt/W
Typical power consumption 77.19W 77.19W

bus

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

details

Xeon E5-2660  vs
E5 2640 v2 
Architecture x86-64 x86-64
Threads 16 16
L2 cache 2 MB 2 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 20 MB 20 MB
L3 cache per core 2.5 MB/core 2.5 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 2 2
Clock multiplier 30 20
Operating temperature Unknown - 73°C Unknown - 75°C

overclocking

Overclocked clock speed 2.65 GHz 2.55 GHz
Overclocked clock speed (Water) 3.17 GHz 2 GHz
Overclocked clock speed (Air) 2.65 GHz 2.55 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
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 51,200 MB/s 25,600 MB/s
Maximum memory size 393,216 MB 786,432 MB
Intel Xeon E5-2660
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Intel Xeon E5 2640 v2
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