CPUBoss Review Our evaluation of X5650 vs 8439 SE among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

5.3

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon X5650 

CPUBoss recommends the Intel Xeon X5650  based on its performance, single-core performance and cost to run.

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VS

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 more l3 cache 12 MB vs 6 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
Much better PassMark score 7,510 vs 3,813 More than 95% better PassMark score
Much better performance per watt 7.89 pt/W vs 2.23 pt/W More than 3.5x better performance per watt
Much higher Maximum operating temperature 81.3 °C vs 55 °C Around 50% higher Maximum operating temperature
More threads 12 vs 6 Twice as many threads
Much better overclocked clock speed (Air) 3.84 GHz vs 3.1 GHz Around 25% 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
Much more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Much better overclocked clock speed (Water) 4.64 GHz vs 2.8 GHz More than 65% better overclocked clock speed (Water)
Lower typical power consumption 77.19W vs 85.31W Around 10% lower typical power consumption
Lower annual commercial energy cost 83.22 $/year vs 91.98 $/year Around 10% lower annual commercial energy cost
Lower annual home energy cost 22.89 $/year vs 25.29 $/year Around 10% lower annual home energy cost
Newer Mar, 2010 vs Jul, 2009 Release date 8 months later
Front view of AMD Opteron 8439 SE

Reasons to consider the
AMD Opteron 8439 SE

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Much more l2 cache 3 MB vs 2 MB 50% more l2 cache; more data can be stored in the l2 cache for quick access later
Higher clock speed 2.8 GHz vs 2.66 GHz More than 5% higher clock speed
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Significantly more l2 cache per core 0.5 MB/core vs 0.33 MB/core More than 50% more l2 cache per core

Benchmarks Real world tests of Xeon X5650 vs Opteron 8439 SE

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X5650
22,313

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X5650
1,470,000 MB/s
Opteron 8439 SE
111,800 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon X5650  vs
Opteron 8439 SE 
Clock speed 2.66 GHz 2.8 GHz
Cores Hexa core Hexa core
Socket type
LGA 1366
F

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 95W 105W
Annual home energy cost 22.89 $/year 25.29 $/year
Annual commercial energy cost 83.22 $/year 91.98 $/year
Performance per watt 7.89 pt/W 2.23 pt/W
Typical power consumption 77.19W 85.31W

bus

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

details

Xeon X5650  vs
Opteron 8439 SE 
Threads 12 6
L2 cache 2 MB 3 MB
L2 cache per core 0.33 MB/core 0.5 MB/core
L3 cache 12 MB 6 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 8
Clock multiplier 20 14
Voltage range 0.75 - 1.35V 1 - UnknownV
Operating temperature Unknown - 81.3°C 0 - 55°C

overclocking

Overclocked clock speed 3.84 GHz 3.1 GHz
Overclocked clock speed (Water) 4.64 GHz 2.8 GHz
Overclocked clock speed (Air) 3.84 GHz 3.1 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
Intel Xeon X5650
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AMD Opteron 8439 SE
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