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Differences What are the advantages of each

Front view of Intel Xeon E7220

Reasons to consider the
Intel Xeon E7220

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Supports more CPUs in SMP configuration 32 vs 1 31 supports more CPUs in SMP configuration
Much more l2 cache 8 MB vs 6 MB Around 35% more l2 cache; more data can be stored in the l2 cache for quick access later
Higher clock speed 2.93 GHz vs 2.53 GHz More than 15% higher clock speed
Much more l2 cache per core 4 MB/core vs 3 MB/core Around 35% more l2 cache per core
Significantly better overclocked clock speed (Air) 2.93 GHz vs 1.8 GHz Around 65% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 2.93 GHz vs 1.8 GHz Around 65% better overclocked clock speed (Water)
Front view of Intel Core2 Duo T9400

Reasons to consider the
Intel Core2 Duo T9400

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Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 28.44W vs 65W 2.3x lower typical power consumption
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much lower annual commercial energy cost 30.66 $/year vs 70.08 $/year 2.3x lower annual commercial energy cost
Much lower annual home energy cost 8.43 $/year vs 19.27 $/year 2.3x lower annual home energy cost
Newer Jul, 2008 vs Sep, 2007 Release date 10 months later

Features Key features of the Xeon E7220  vs Core2 Duo T9400 

clock speed

Xeon E7220
2.93 GHz
Core2 Duo T9400
2.53 GHz

L2 cache

overclocked clock speed (air)

Xeon E7220
2.93 GHz
Core2 Duo T9400
1.8 GHz

overclocked clock speed (water)

Xeon E7220
2.93 GHz
Core2 Duo T9400
1.8 GHz

Specifications Full list of technical specs

summary

Xeon E7220  vs
Core2 Duo T9400 
Clock speed 2.93 GHz 2.53 GHz
Cores Dual core Dual core
Socket type
604
478
P

features

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

power consumption

TDP 80W 35W
Annual home energy cost 19.27 $/year 8.43 $/year
Annual commercial energy cost 70.08 $/year 30.66 $/year
Typical power consumption 65W 28.44W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,066 MHz 1,066 MHz

details

Xeon E7220  vs
Core2 Duo T9400 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 8 MB 6 MB
L2 cache per core 4 MB/core 3 MB/core
Manufacture process 65 nm 45 nm
Transistor count 582,000,000 410,000,000
Max CPUs 32 1
Clock multiplier 11 9
Voltage range 1 - 1.5V 1.05 - 1.16V

overclocking

Overclocked clock speed 2.93 GHz 1.8 GHz
Overclocked clock speed (Water) 2.93 GHz 1.8 GHz
Overclocked clock speed (Air) 2.93 GHz 1.8 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 E7220
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Intel Core2 Duo T9400
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