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Differences What are the advantages of each

Front view of Intel Xeon E5-4620

Reasons to consider the
Intel Xeon E5-4620

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Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Lower typical power consumption 77.19W vs 85.31W Around 10% lower typical power consumption
Lower annual commercial energy cost 83.22 $/year vs 91.98 $/year Around 10% lower annual commercial energy cost
Lower annual home energy cost 22.89 $/year vs 25.29 $/year Around 10% lower annual home energy cost
Front view of Intel Xeon E5-2660 v3

Reasons to consider the
Intel Xeon E5-2660 v3

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Much more l3 cache 25 MB vs 16 MB More than 55% more l3 cache; more data can be stored in the l3 cache for quick access later
Much higher clock speed 2.6 GHz vs 2.2 GHz Around 20% higher clock speed
Much higher turbo clock speed 3.3 GHz vs 2.6 GHz More than 25% higher turbo clock speed
Much better PassMark (Single core) score 1,820 vs 1,232 Around 50% better PassMark (Single core) score
Supports more RAM 786,432 MB vs 393,216 MB Supports 2x more RAM
More threads 20 vs 16 4 more threads
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly better overclocked clock speed (Air) 2.6 GHz vs 2.32 GHz More than 10% better overclocked clock speed (Air)
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Much better overclocked clock speed (Water) 2.6 GHz vs 2.2 GHz Around 20% better overclocked clock speed (Water)
Newer Jul, 2014 vs May, 2012 Release date over 2 years later

Benchmarks Real world tests of Xeon E5-4620 vs E5-2660 v3

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 E5-4620
1,830 MB/s
Xeon E5-2660 v3
3,050,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-4620  vs
E5-2660 v3 
Clock speed 2.2 GHz 2.6 GHz
Turbo clock speed 2.6 GHz 3.3 GHz
Cores Octa 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 105W
Annual home energy cost 22.89 $/year 25.29 $/year
Annual commercial energy cost 83.22 $/year 91.98 $/year
Performance per watt 5.25 pt/W 13.11 pt/W
Typical power consumption 77.19W 85.31W

bus

Architecture QPI QPI
Number of links 2 2
Data rate 57,600 MB/s 76,800 MB/s
Transfer rate 7,200 MT/s 9,600 MT/s
Clock speed 3,600 MHz 4,800 MHz

details

Xeon E5-4620  vs
E5-2660 v3 
Architecture x86-64 x86-64
Threads 16 20
L3 cache 16 MB 25 MB
L3 cache per core 2 MB/core 2.5 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 4 2

overclocking

Overclocked clock speed 2.32 GHz 2.6 GHz
Overclocked clock speed (Water) 2.2 GHz 2.6 GHz
Overclocked clock speed (Air) 2.32 GHz 2.6 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
DDR
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 42,666.64 MB/s 6,400 MB/s
Maximum memory size 393,216 MB 786,432 MB
Intel Xeon E5-4620
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Intel Xeon E5-2660 v3
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