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Differences What are the advantages of each

Front view of AMD Opteron 4276 HE

Reasons to consider the
AMD Opteron 4276 HE

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Higher clock speed 2.6 GHz vs 2.5 GHz Around 5% higher clock speed
Higher turbo clock speed 3.6 GHz vs 3.5 GHz Around 5% higher turbo clock speed
Better overclocked clock speed (Air) 2.6 GHz vs 2.5 GHz Around 5% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 2.6 GHz vs 2.5 GHz Around 5% better overclocked clock speed (Water)
Newer Jun, 2012 vs Nov, 2011 Release date 6 months later
Front view of AMD Opteron 4274 HE

Reasons to consider the
AMD Opteron 4274 HE

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CPUBoss is not aware of any important advantages of the 4274 HE vs the 4276 HE.

Features Key features of the Opteron 4276 HE  vs 4274 HE 

clock speed

turbo clock speed

L2 cache

L3 cache

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Opteron 4276 HE  vs
4274 HE 
Clock speed 2.6 GHz 2.5 GHz
Turbo clock speed 3.6 GHz 3.5 GHz
Cores Octa core Octa core
Socket type
C32
Is unlocked No No

features

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

power consumption

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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3

details

Opteron 4276 HE  vs
4274 HE 
Threads 8 8
L2 cache 8 MB 8 MB
L2 cache per core 1 MB/core 1 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 1 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 2
Clock multiplier 13 12
Operating temperature Unknown - 68°C Unknown - 68°C

overclocking

Overclocked clock speed 2.6 GHz 2.5 GHz
Overclocked clock speed (Water) 2.6 GHz 2.5 GHz
Overclocked clock speed (Air) 2.6 GHz 2.5 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

bus

Architecture HyperTransport 3.0 HyperTransport 3.0
Number of links 2 2
Transfer rate 6,400 MT/s 6,400 MT/s
Clock speed 3,200 MHz 3,200 MHz
AMD Opteron 4276 HE
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AMD Opteron 4274 HE
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