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Differences What are the advantages of each

Front view of Intel Xeon E3-1245 v3

Reasons to consider the
Intel Xeon E3-1245 v3

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Much higher clock speed 3.4 GHz vs 2.6 GHz More than 30% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Higher turbo clock speed 3.8 GHz vs 3.6 GHz More than 5% higher turbo clock speed
Much better overclocked clock speed (Air) 3.4 GHz vs 2.6 GHz More than 30% better overclocked clock speed (Air)
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
Much better overclocked clock speed (Water) 3.74 GHz vs 2.6 GHz Around 45% better overclocked clock speed (Water)
Front view of AMD Opteron 4376 HE

Reasons to consider the
AMD Opteron 4376 HE

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Much more l2 cache 8 MB vs 1 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 8 vs 4 Twice as many cores; run more applications at once
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Lower typical power consumption 52.81W vs 68.25W Around 25% 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 56.94 $/year vs 73.58 $/year Around 25% lower annual commercial energy cost
Lower annual home energy cost 15.66 $/year vs 20.24 $/year Around 25% lower annual home energy cost

Features Key features of the Xeon E3-1245 v3  vs Opteron 4376 HE 

clock speed

turbo clock speed

L2 cache

L3 cache

overclocked clock speed (air)

overclocked clock speed (water)

Xeon E3-1245 v3
3.74 GHz
Opteron 4376 HE
2.6 GHz

Specifications Full list of technical specs

summary

Xeon E3-1245 v3  vs
Opteron 4376 HE 
Clock speed 3.4 GHz 2.6 GHz
Turbo clock speed 3.8 GHz 3.6 GHz
Cores Quad core Octa core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
SSE4
XOP
AVX
SSE3
SSE
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 84W 65W
Annual home energy cost 20.24 $/year 15.66 $/year
Annual commercial energy cost 73.58 $/year 56.94 $/year
Typical power consumption 68.25W 52.81W

bus

Architecture DMI HyperTransport 3.0
Transfer rate 5,000 MT/s 6,400 MT/s

details

Xeon E3-1245 v3  vs
Opteron 4376 HE 
Threads 8 8
L2 cache 1 MB 8 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 2

overclocking

Overclocked clock speed 3.4 GHz 2.6 GHz
Overclocked clock speed (Water) 3.74 GHz 2.6 GHz
Overclocked clock speed (Air) 3.4 GHz 2.6 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics P4600 N/A
Number of displays supported 3 N/A
GPU clock speed 350 MHz N/A
Turbo clock speed 1,200 MHz N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 25,600 MB/s 12,800 MB/s
Intel Xeon E3-1245 v3
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AMD Opteron 4376 HE
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