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Differences What are the advantages of each

Front view of Intel Xeon E5-2650

Reasons to consider the
Intel Xeon E5-2650

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Much more l3 cache 20 MB vs 16 MB 25% more l3 cache; more data can be stored in the l3 cache for quick access later
Much better performance per watt 6.61 pt/W vs 1.08 pt/W Around 6.2x better performance per watt
More threads 16 vs 12 4 more threads
Much more l3 cache per core 2.5 MB/core vs 1.33 MB/core Around 90% more l3 cache per core
Lower typical power consumption 77.19W vs 93.44W More than 15% lower typical power consumption
Lower annual commercial energy cost 83.22 $/year vs 100.74 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 22.89 $/year vs 27.7 $/year More than 15% lower annual home energy cost
Front view of AMD Opteron 6348

Reasons to consider the
AMD Opteron 6348

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Much more l2 cache 12 MB vs 2 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher clock speed 2.8 GHz vs 2 GHz Around 40% higher clock speed
Significantly higher turbo clock speed 3.4 GHz vs 2.8 GHz More than 20% higher turbo clock speed
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Much better overclocked clock speed (Air) 3.4 GHz vs 2.55 GHz Around 35% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.4 GHz vs 2 GHz 70% better overclocked clock speed (Water)
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Newer Nov, 2012 vs Mar, 2012 Release date 8 months later

Benchmarks Real world tests of Xeon E5-2650 vs Opteron 6348

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-2650
1,350,000 MB/s
Opteron 6348
1,670 MB/s

Specifications Full list of technical specs

summary

Xeon E5-2650  vs
Opteron 6348 
Clock speed 2 GHz 2.8 GHz
Turbo clock speed 2.8 GHz 3.4 GHz
Cores Octa core Duodeca core
Socket type
LGA 2011
G34

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 95W 115W
Annual home energy cost 22.89 $/year 27.7 $/year
Annual commercial energy cost 83.22 $/year 100.74 $/year
Performance per watt 6.61 pt/W 1.08 pt/W
Typical power consumption 77.19W 93.44W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 51,200 MB/s 25,600 MB/s

details

Xeon E5-2650  vs
Opteron 6348 
Threads 16 12
L2 cache 2 MB 12 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 20 MB 16 MB
L3 cache per core 2.5 MB/core 1.33 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 4
Clock multiplier 28 17
Operating temperature Unknown - 77.4°C Unknown - 70.4°C

overclocking

Overclock popularity 0 0
Overclocked clock speed 2.55 GHz 3.4 GHz
Overclocked clock speed (Water) 2 GHz 3.4 GHz
Overclocked clock speed (Air) 2.55 GHz 3.4 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 QPI HyperTransport 3.0
Transfer rate 8,000 MT/s 6,400 MT/s
Clock speed 4,000 MHz 3,200 MHz
Intel Xeon E5-2650
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AMD Opteron 6348
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