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Differences What are the advantages of each

Front view of Intel Xeon E5 2680 v2

Reasons to consider the
Intel Xeon E5 2680 v2

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Much 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
Much more l2 cache 2.5 MB vs 1.5 MB More than 65% more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher Maximum operating temperature 82 °C vs 70 °C More than 15% higher Maximum operating temperature
More threads 20 vs 12 8 more threads
Lower typical power consumption 93.44W vs 105.63W More than 10% lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Lower annual commercial energy cost 100.74 $/year vs 113.88 $/year More than 10% lower annual commercial energy cost
Lower annual home energy cost 27.7 $/year vs 31.32 $/year More than 10% lower annual home energy cost
Front view of Intel Xeon E5 1660 v2

Reasons to consider the
Intel Xeon E5 1660 v2

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Much higher clock speed 3.7 GHz vs 2.8 GHz More than 30% higher clock speed
Significantly higher turbo clock speed 4 GHz vs 3.6 GHz More than 10% higher turbo clock speed
Much better overclocked clock speed (Air) 4.75 GHz vs 3.4 GHz More than 40% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 3.7 GHz vs 3.49 GHz More than 5% better overclocked clock speed (Water)

Features Key features of the Xeon E5 2680 v2  vs 1660 v2 

clock speed

turbo clock speed

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E5 2680 v2
3.4 GHz
Xeon E5 1660 v2
4.75 GHz

overclocked clock speed (water)

Xeon E5 2680 v2
3.49 GHz
Xeon E5 1660 v2
3.7 GHz

Specifications Full list of technical specs

summary

Xeon E5 2680 v2  vs
1660 v2 
Clock speed 2.8 GHz 3.7 GHz
Turbo clock speed 3.6 GHz 4 GHz
Cores Deca core Hexa core
Socket type
LGA 2011
Is unlocked No No

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 115W 130W
Annual home energy cost 27.7 $/year 31.32 $/year
Annual commercial energy cost 100.74 $/year 113.88 $/year
Typical power consumption 93.44W 105.63W

bus

Architecture QPI QPI
Number of links 2 0
Transfer rate 8,000 MT/s 0 MT/s

details

Xeon E5 2680 v2  vs
1660 v2 
Architecture x86-64 x86-64
Threads 20 12
L2 cache 2.5 MB 1.5 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 25 MB 15 MB
L3 cache per core 2.5 MB/core 2.5 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 2 1
Clock multiplier 28 37
Operating temperature Unknown - 82°C Unknown - 70°C

overclocking

Overclocked clock speed 3.4 GHz 4.75 GHz
Overclocked clock speed (Water) 3.49 GHz 3.7 GHz
Overclocked clock speed (Air) 3.4 GHz 4.75 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
DDR3-1866
DDR3-1600
DDR3-1333
DDR3-1066
DDR3-800
DDR3
DDR3-800
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 59,733.32 MB/s 59,733.32 MB/s
Intel Xeon E5 2680 v2
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Intel Xeon E5 1660 v2
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