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Differences What are the advantages of each

Front view of Intel Xeon X5660

Reasons to consider the
Intel Xeon X5660

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Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 2.8 GHz vs 1.2 GHz More than 2.2x higher clock speed
More advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much better overclocked clock speed (Air) 4.13 GHz vs 1.24 GHz More than 3.2x better overclocked clock speed (Air)
More cores 6 vs 1 5 more cores; run more applications at once
More threads 12 vs 1 11 more threads
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Newer Mar, 2010 vs Jan, 2005 Release date over 5 years later
Much better overclocked clock speed (Water) 4.73 GHz vs 1.2 GHz Around 4x better overclocked clock speed (Water)
Front view of Intel Pentium 753

Reasons to consider the
Intel Pentium 753

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Much lower typical power consumption 4.47W vs 77.19W 17.3x lower typical power consumption
Much more l2 cache per core 2 MB/core vs 0.33 MB/core More than 6x more l2 cache per core
Much lower annual home energy cost 1.32 $/year vs 22.89 $/year 17.3x lower annual home energy cost
Much lower annual commercial energy cost 4.82 $/year vs 83.22 $/year 17.3x lower annual commercial energy cost

Features Key features of the Xeon X5660  vs Pentium 753 

clock speed

Xeon X5660
2.8 GHz
Pentium 753
1.2 GHz

L2 cache

overclocked clock speed (air)

Xeon X5660
4.13 GHz
Pentium 753
1.24 GHz

overclocked clock speed (water)

Xeon X5660
4.73 GHz
Pentium 753
1.2 GHz

TDP

Specifications Full list of technical specs

summary

Xeon X5660  vs
Pentium 753 
Clock speed 2.8 GHz 1.2 GHz
Cores Hexa core Single core
Socket type
LGA 1366
479

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes No
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 5.5W
Annual home energy cost 22.89 $/year 1.32 $/year
Annual commercial energy cost 83.22 $/year 4.82 $/year
Typical power consumption 77.19W 4.47W

bus

Architecture QPI FSB
Number of links 2 1
Clock speed 3,200 MHz 400 MHz

details

Xeon X5660  vs
Pentium 753 
Architecture x86-64 x86
Threads 12 1
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 2 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 2 1
Clock multiplier 21 12
Voltage range 0.75 - 1.35V 0.81 - 0.96V

overclocking

Overclocked clock speed 4.13 GHz 1.24 GHz
Overclocked clock speed (Water) 4.73 GHz 1.2 GHz
Overclocked clock speed (Air) 4.13 GHz 1.24 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
Supports ECC Yes No
Intel Xeon X5660
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Intel Pentium 753
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