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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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Much better PassMark score 8,127 vs 4,865 More than 65% better PassMark score
Much more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Lower typical power consumption 77.19W vs 93.44W More than 15% lower typical power consumption
Lower annual commercial energy cost 83.22 $/year vs 100.74 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 22.89 $/year vs 27.7 $/year More than 15% lower annual home energy cost
Newer May, 2012 vs Nov, 2011 Release date 6 months later
Front view of AMD Opteron 6274

Reasons to consider the
AMD Opteron 6274

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Much more l2 cache 16 MB vs 2 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher turbo clock speed 3.1 GHz vs 2.6 GHz Around 20% higher turbo clock speed
Much better overclocked clock speed (Air) 3.9 GHz vs 2.32 GHz Around 70% better overclocked clock speed (Air)
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core

Benchmarks Real world tests of Xeon E5-4620 vs Opteron 6274

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5-4620
61,522
Opteron 6274
22,248

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-4620
1,830 MB/s
Opteron 6274
1,690,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-4620  vs
Opteron 6274 
Clock speed 2.2 GHz 2.2 GHz
Turbo clock speed 2.6 GHz 3.1 GHz
Cores Octa core 16 core
Socket type
LGA 2011
G34

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES

power consumption

TDP 95W 115W
Annual home energy cost 22.89 $/year 27.7 $/year
Annual commercial energy cost 83.22 $/year 100.74 $/year
Performance per watt 5.25 pt/W 6.82 pt/W
Typical power consumption 77.19W 93.44W

bus

Architecture QPI HyperTransport 3.0
Transfer rate 7,200 MT/s 6,400 MT/s
Clock speed 3,600 MHz 3,200 MHz

details

Xeon E5-4620  vs
Opteron 6274 
Threads 16 16
L2 cache 2 MB 16 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 16 MB 16 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 4 4

overclocking

Overclock popularity 0 0
Overclocked clock speed 2.32 GHz 3.9 GHz
Overclocked clock speed (Water) 2.2 GHz 2.2 GHz
Overclocked clock speed (Air) 2.32 GHz 3.9 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
DDR3-800
DDR3
Intel Xeon E5-4620
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AMD Opteron 6274
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