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Differences What are the advantages of each

Front view of Intel Xeon X5650

Reasons to consider the
Intel Xeon X5650

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Much better performance per watt 7.89 pt/W vs 1.08 pt/W More than 7.2x better performance per watt
Much higher Maximum operating temperature 81.3 °C vs 70.4 °C More than 15% higher Maximum operating temperature
Much better overclocked clock speed (Air) 3.84 GHz vs 3.4 GHz Around 15% better overclocked clock speed (Air)
Lower typical power consumption 77.19W vs 93.44W More than 15% lower typical power consumption
Significantly more l3 cache per core 2 MB/core vs 1.33 MB/core More than 50% more l3 cache per core
Much better overclocked clock speed (Water) 4.64 GHz vs 3.4 GHz More than 35% better overclocked clock speed (Water)
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 more l3 cache 16 MB vs 12 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Higher turbo clock speed 3.4 GHz vs 3.06 GHz More than 10% higher turbo clock speed
Higher clock speed 2.8 GHz vs 2.66 GHz More than 5% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.33 MB/core More than 3x more l2 cache per core
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Newer Nov, 2012 vs Mar, 2010 Release date over 2 years later

Benchmarks Real world tests of Xeon X5650 vs Opteron 6348

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X5650
22,313
Opteron 6348
8,253

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon X5650
2,176
Opteron 6348
1,699

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X5650
1,470,000 MB/s
Opteron 6348
1,670 MB/s

Specifications Full list of technical specs

summary

Xeon X5650  vs
Opteron 6348 
Clock speed 2.66 GHz 2.8 GHz
Turbo clock speed 3.06 GHz 3.4 GHz
Cores Hexa core Duodeca core
Socket type
LGA 1366
G34

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
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 7.89 pt/W 1.08 pt/W
Typical power consumption 77.19W 93.44W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 25,600 MB/s

details

Xeon X5650  vs
Opteron 6348 
Threads 12 12
L2 cache 2 MB 12 MB
L2 cache per core 0.33 MB/core 1 MB/core
L3 cache 12 MB 16 MB
L3 cache per core 2 MB/core 1.33 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 4
Clock multiplier 20 17
Operating temperature Unknown - 81.3°C Unknown - 70.4°C

overclocking

Overclock popularity 11 0
Overclocked clock speed 3.84 GHz 3.4 GHz
Overclocked clock speed (Water) 4.64 GHz 3.4 GHz
Overclocked clock speed (Air) 3.84 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 6,400 MT/s 6,400 MT/s
Clock speed 3,200 MHz 3,200 MHz
Intel Xeon X5650
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AMD Opteron 6348
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