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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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Significantly higher clock speed 2.66 GHz vs 2.4 GHz More than 10% higher clock speed
Much better performance per watt 7.89 pt/W vs 2.33 pt/W Around 3.5x better performance per watt
Much better performance per dollar 1.44 pt/$ vs 0.09 pt/$ Around 16.5x better performance per dollar
Much higher Maximum operating temperature 81.3 °C vs 68 °C Around 20% higher Maximum operating temperature
Much better overclocked clock speed (Air) 3.84 GHz vs 2.59 GHz Around 50% better overclocked clock speed (Air)
More threads 12 vs 6 Twice as many threads
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much better overclocked clock speed (Water) 4.64 GHz vs 2.4 GHz Around 95% better overclocked clock speed (Water)
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Mar, 2010 vs Sep, 2008 Release date over 1 years later
Front view of Intel Xeon E7450

Reasons to consider the
Intel Xeon E7450

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Much more l2 cache 9 MB vs 2 MB 4.5x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 32 vs 2 30 supports more CPUs in SMP configuration
Much more l2 cache per core 1.5 MB/core vs 0.33 MB/core More than 4.5x more l2 cache per core

Benchmarks Real world tests of Xeon X5650 vs E7450

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X5650
22,313
Xeon E7450
18,532.5

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon X5650
2,176
Xeon E7450
1,070.5

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X5650
1,470,000 MB/s
Xeon E7450
86.3 MB/s

Specifications Full list of technical specs

summary

Xeon X5650  vs
E7450 
Clock speed 2.66 GHz 2.4 GHz
Cores Hexa core Hexa core
Socket type
LGA 1366
604

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 95W 90W
Annual home energy cost 22.89 $/year 21.68 $/year
Annual commercial energy cost 83.22 $/year 78.84 $/year
Performance per watt 7.89 pt/W 2.33 pt/W
Typical power consumption 77.19W 73.13W

bus

Architecture QPI FSB
Number of links 2 1
Clock speed 3,200 MHz 1,066 MHz

details

Xeon X5650  vs
E7450 
Architecture x86-64 x86-64
Threads 12 6
L2 cache 2 MB 9 MB
L2 cache per core 0.33 MB/core 1.5 MB/core
L3 cache 12 MB 12 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 32
Clock multiplier 20 9
Voltage range 0.75 - 1.35V 0.9 - 1.45V
Operating temperature Unknown - 81.3°C Unknown - 68°C

overclocking

Overclocked clock speed 3.84 GHz 2.59 GHz
Overclocked clock speed (Water) 4.64 GHz 2.4 GHz
Overclocked clock speed (Air) 3.84 GHz 2.59 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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Intel Xeon E7450
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