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Differences What are the advantages of each

Front view of AMD Opteron 8381 HE

Reasons to consider the
AMD Opteron 8381 HE

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Much lower typical power consumption 44.69W vs 93.44W 2.1x lower typical power consumption
Supports more CPUs in SMP configuration 8 vs 4 Twice as many CPUs in SMP configuration
More l3 cache per core 1.5 MB/core vs 1 MB/core 50% more l3 cache per core
Much lower annual commercial energy cost 48.18 $/year vs 100.74 $/year 2.1x lower annual commercial energy cost
Much lower annual home energy cost 13.25 $/year vs 27.7 $/year 2.1x lower annual home energy cost
Front view of AMD Opteron 6380

Reasons to consider the
AMD Opteron 6380

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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 more l3 cache 16 MB vs 6 MB Around 2.8x more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 16 vs 4 12 more threads
More cores 16 vs 4 12 more cores; run more applications at once
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Air) 2.93 GHz vs 2.5 GHz More than 15% better overclocked clock speed (Air)
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Nov, 2012 vs Apr, 2009 Release date over 3 years later

Features Key features of the Opteron 8381 HE  vs 6380 

clock speed

Opteron 8381 HE
2.5 GHz
Opteron 6380
2.5 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Opteron 8381 HE
2.5 GHz
Opteron 6380
2.93 GHz

overclocked clock speed (water)

Opteron 8381 HE
2.5 GHz
Opteron 6380
2.5 GHz

Specifications Full list of technical specs

summary

Opteron 8381 HE  vs
6380 
Clock speed 2.5 GHz 2.5 GHz
Cores Quad core 16 core
Socket type
F
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
3DNow!
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 55W 115W
Annual home energy cost 13.25 $/year 27.7 $/year
Annual commercial energy cost 48.18 $/year 100.74 $/year
Typical power consumption 44.69W 93.44W

bus

Architecture HyperTransport 3.0 HyperTransport 3.0
Clock speed 2,000 MHz 3,200 MHz

details

Opteron 8381 HE  vs
6380 
Threads 4 16
L2 cache 2 MB 16 MB
L2 cache per core 0.5 MB/core 1 MB/core
L3 cache 6 MB 16 MB
L3 cache per core 1.5 MB/core 1 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 8 4
Clock multiplier 12 17
Operating temperature 0 - 55°C Unknown - 69°C

overclocking

Overclocked clock speed 2.5 GHz 2.93 GHz
Overclocked clock speed (Water) 2.5 GHz 2.5 GHz
Overclocked clock speed (Air) 2.5 GHz 2.93 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
AMD Opteron 8381 HE
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AMD Opteron 6380
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