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Differences What are the advantages of each

Front view of Intel Xeon E7-4820 v2

Reasons to consider the
Intel Xeon E7-4820 v2

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Significantly higher turbo clock speed 2.5 GHz vs 2 GHz 25% higher turbo clock speed
Much more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Lower typical power consumption 85.31W vs 93.44W Around 10% lower typical power consumption
Newer Feb, 2014 vs Nov, 2012 Release date over 1 years later
Lower annual commercial energy cost 91.98 $/year vs 100.74 $/year Around 10% lower annual commercial energy cost
Lower annual home energy cost 25.29 $/year vs 27.7 $/year Around 10% lower annual home energy cost
Front view of AMD Opteron 6376

Reasons to consider the
AMD Opteron 6376

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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
Much higher clock speed 2.3 GHz vs 2 GHz Around 15% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core

Features Key features of the Xeon E7-4820 v2  vs Opteron 6376 

clock speed

turbo clock speed

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Xeon E7-4820 v2  vs
Opteron 6376 
Clock speed 2 GHz 2.3 GHz
Turbo clock speed 2.5 GHz 2 GHz
Cores Octa core 16 core
Socket type
LGA 2011
G34
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
AVX
SSE3
SSE
ABM
BMI1
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 105W 115W
Annual home energy cost 25.29 $/year 27.7 $/year
Annual commercial energy cost 91.98 $/year 100.74 $/year
Typical power consumption 85.31W 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 E7-4820 v2  vs
Opteron 6376 
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 22 nm 32 nm
Max CPUs 4 4
Clock multiplier 20 16
Operating temperature Unknown - 68°C Unknown - 69°C

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
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 42,666.64 MB/s 25,600 MB/s
Intel Xeon E7-4820 v2
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AMD Opteron 6376
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