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Differences What are the advantages of each

Front view of Intel Xeon E5-2690

Reasons to consider the
Intel Xeon E5-2690

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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
Significantly higher clock speed 2.9 GHz vs 1.8 GHz More than 60% 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
More cores 8 vs 1 7 more cores; run more applications at once
More threads 16 vs 1 15 more threads
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Newer Mar, 2012 vs May, 2004 Release date over 7 years later
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly better overclocked clock speed (Air) 3.53 GHz vs 2.34 GHz More than 50% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.92 GHz vs 1.8 GHz Around 2.2x better overclocked clock speed (Water)
Front view of Intel Pentium 745

Reasons to consider the
Intel Pentium 745

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Much lower typical power consumption 6.09W vs 109.69W 18x lower typical power consumption
Much more l2 cache per core 2 MB/core vs 0.25 MB/core 8x more l2 cache per core
Much lower annual home energy cost 1.81 $/year vs 32.52 $/year 18x lower annual home energy cost
Much lower annual commercial energy cost 6.57 $/year vs 118.26 $/year 18x lower annual commercial energy cost

Features Key features of the Xeon E5-2690  vs Pentium 745 

clock speed

Xeon E5-2690
2.9 GHz
Pentium 745
1.8 GHz

L2 cache

overclocked clock speed (air)

Xeon E5-2690
3.53 GHz
Pentium 745
2.34 GHz

overclocked clock speed (water)

Xeon E5-2690
3.92 GHz
Pentium 745
1.8 GHz

TDP

Specifications Full list of technical specs

summary

Xeon E5-2690  vs
Pentium 745 
Clock speed 2.9 GHz 1.8 GHz
Cores Octa core Single core
Socket type
LGA 2011
479

features

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

power consumption

TDP 135W 7.5W
Annual home energy cost 32.52 $/year 1.81 $/year
Annual commercial energy cost 118.26 $/year 6.57 $/year
Typical power consumption 109.69W 6.09W

details

Xeon E5-2690  vs
Pentium 745 
Architecture x86-64 x86
Threads 16 1
L2 cache 2 MB 2 MB
L2 cache per core 0.25 MB/core 2 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 2 1
Clock multiplier 38 18
Voltage range 0.6 - 1.35V 1.28 - 1.34V

overclocking

Overclocked clock speed 3.53 GHz 2.34 GHz
Overclocked clock speed (Water) 3.92 GHz 1.8 GHz
Overclocked clock speed (Air) 3.53 GHz 2.34 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 FSB
Number of links 2 1
Clock speed 4,000 MHz 400 MHz
Intel Xeon E5-2690
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Intel Pentium 745
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