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Differences What are the advantages of each

Front view of AMD Opteron 6338P

Reasons to consider the
AMD Opteron 6338P

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Much more l2 cache 12 MB vs 6 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l3 cache 16 MB vs 8 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 12 vs 6 Twice as many threads
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Newer Jan, 2014 vs Nov, 2011 Release date over 2 years later
Front view of AMD Opteron 4228 HE

Reasons to consider the
AMD Opteron 4228 HE

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Much higher clock speed 2.8 GHz vs 2.3 GHz More than 20% higher clock speed
Much higher turbo clock speed 3.6 GHz vs 2.8 GHz Around 30% higher turbo clock speed
Significantly lower typical power consumption 52.81W vs 80.44W Around 35% lower typical power consumption
Significantly lower annual commercial energy cost 56.94 $/year vs 86.72 $/year Around 35% lower annual commercial energy cost
Significantly lower annual home energy cost 15.66 $/year vs 23.85 $/year Around 35% lower annual home energy cost

Features Key features of the Opteron 6338P  vs 4228 HE 

clock speed

Opteron 6338P
2.3 GHz
Opteron 4228 HE
2.8 GHz

turbo clock speed

Opteron 6338P
2.8 GHz
Opteron 4228 HE
3.6 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Opteron 6338P
2.8 GHz
Opteron 4228 HE
2.8 GHz

overclocked clock speed (water)

Opteron 6338P
2.8 GHz
Opteron 4228 HE
2.8 GHz

Specifications Full list of technical specs

summary

Opteron 6338P  vs
4228 HE 
Clock speed 2.3 GHz 2.8 GHz
Turbo clock speed 2.8 GHz 3.6 GHz
Cores Dodeca core Hexa core
Socket type
G34
C32
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
SSE4
XOP
AVX
SSE3
SSE
ABM
BMI1
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
TBM

power consumption

TDP 99W 65W
Annual home energy cost 23.85 $/year 15.66 $/year
Annual commercial energy cost 86.72 $/year 56.94 $/year
Typical power consumption 80.44W 52.81W

bus

Transfer rate 6,400 MT/s 6,400 MT/s
Clock speed 3,200 MHz 3,200 MHz

details

Opteron 6338P  vs
4228 HE 
Threads 12 6
L2 cache 12 MB 6 MB
L3 cache 16 MB 8 MB
Manufacture process 32 nm 32 nm
Max CPUs 4 2
Clock multiplier 17 18
Operating temperature Unknown - 69°C Unknown - 68°C

overclocking

Overclocked clock speed 2.8 GHz 2.8 GHz
Overclocked clock speed (Water) 2.8 GHz 2.8 GHz
Overclocked clock speed (Air) 2.8 GHz 2.8 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
DDR3-1600
DDR3
AMD Opteron 6338P
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AMD Opteron 4228 HE
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