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Differences What are the advantages of each

Front view of Intel Core2 Duo E6550

Reasons to consider the
Intel Core2 Duo E6550

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Much more l2 cache 4 MB vs 0.25 MB 16x more l2 cache; more data can be stored in the l2 cache for quick access later
Much newer manufacturing process 65 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
More cores 2 vs 1 Twice as many cores; run more applications at once
Much more l2 cache per core 2 MB/core vs 0.25 MB/core 8x more l2 cache per core
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly lower typical power consumption 52.81W vs 68.25W Around 25% lower typical power consumption
Significantly higher Maximum operating temperature 72 °C vs 67.7 °C More than 5% higher Maximum operating temperature
Much better overclocked clock speed (Water) 3.32 GHz vs 2.53 GHz More than 30% better overclocked clock speed (Water)
Significantly lower annual home energy cost 15.66 $/year vs 20.24 $/year Around 25% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 73.58 $/year Around 25% lower annual commercial energy cost
Newer Jul, 2007 vs Oct, 2004 Release date over 2 years later
Front view of Intel Celeron D 325J

Reasons to consider the
Intel Celeron D 325J

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More threads 4 vs 2 Twice as many threads
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Higher clock speed 2.53 GHz vs 2.33 GHz Around 10% higher clock speed
Much better overclocked clock speed (Air) 4 GHz vs 3.35 GHz Around 20% better overclocked clock speed (Air)

Features Key features of the Core2 Duo E6550  vs Celeron D 325J 

clock speed

Core2 Duo E6550
2.33 GHz
Celeron D 325J
2.53 GHz

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Core2 Duo E6550
3.32 GHz
Celeron D 325J
2.53 GHz

Specifications Full list of technical specs

summary

Core2 Duo E6550  vs
Celeron D 325J 
Clock speed 2.33 GHz 2.53 GHz
Cores Dual core Single core
Socket type
LGA 775

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 65W 84W
Annual home energy cost 15.66 $/year 20.24 $/year
Annual commercial energy cost 56.94 $/year 73.58 $/year
Typical power consumption 52.81W 68.25W

bus

Architecture FSB FSB
Number of links 1 2
Clock speed 1,333 MHz 533 MHz

details

Core2 Duo E6550  vs
Celeron D 325J 
Architecture x86-64 x86
Threads 2 4
L2 cache 4 MB 0.25 MB
L2 cache per core 2 MB/core 0.25 MB/core
Manufacture process 65 nm 90 nm
Transistor count 291,000,000 125,000,000
Max CPUs 1 2
Clock multiplier 7 19
Voltage range 0.85 - 1.5V 1.25 - 1.4V
Operating temperature Unknown - 72°C Unknown - 67.7°C

overclocking

Overclocked clock speed 3.35 GHz 4 GHz
Overclocked clock speed (Water) 3.32 GHz 2.53 GHz
Overclocked clock speed (Air) 3.35 GHz 4 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 Core2 Duo E6550
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Intel Celeron D 325J
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