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Differences What are the advantages of each

Front view of Intel Pentium 4 520J

Reasons to consider the
Intel Pentium 4 520J

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Higher clock speed 2.8 GHz vs 2.2 GHz More than 25% higher clock speed
Better overclocked clock speed (Air) 3.77 GHz vs 2.97 GHz More than 25% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.16 GHz vs 2.7 GHz Around 55% better overclocked clock speed (Water)
Front view of Intel Core2 Duo T7500

Reasons to consider the
Intel Core2 Duo T7500

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Much more l2 cache 4 MB vs 1 MB 4x 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
Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
Much lower typical power consumption 28.44W vs 68.25W 2.4x lower typical power consumption
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much more l2 cache per core 2 MB/core vs 1 MB/core 2x more l2 cache per core
Newer Jul, 2006 vs Apr, 2004 Release date over 2 years later
More cores 2 vs 1 Twice as many cores; run more applications at once
Much lower annual home energy cost 8.43 $/year vs 20.24 $/year 2.4x lower annual home energy cost
Much lower annual commercial energy cost 30.66 $/year vs 73.58 $/year 2.4x lower annual commercial energy cost

Features Key features of the Pentium 4 520J  vs Core2 Duo T7500 

clock speed

L2 cache

overclocked clock speed (air)

Pentium 4 520J
3.77 GHz
Core2 Duo T7500
2.97 GHz

overclocked clock speed (water)

Pentium 4 520J
4.16 GHz
Core2 Duo T7500
2.7 GHz

Specifications Full list of technical specs

summary

Pentium 4 520J  vs
Core2 Duo T7500 
Clock speed 2.8 GHz 2.2 GHz
Cores Single core Dual core
Socket type
LGA 775
P
479

features

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

power consumption

TDP 84W 35W
Annual home energy cost 20.24 $/year 8.43 $/year
Annual commercial energy cost 73.58 $/year 30.66 $/year
Typical power consumption 68.25W 28.44W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 800 MHz 800 MHz

details

Pentium 4 520J  vs
Core2 Duo T7500 
Architecture x86 x86-64
Threads 2 2
L2 cache 1 MB 4 MB
L2 cache per core 1 MB/core 2 MB/core
Manufacture process 90 nm 65 nm
Transistor count 125,000,000 291,000,000
Max CPUs 1 1
Clock multiplier 14 11
Voltage range 1.29 - 1.4V 1.07 - 1.25V

overclocking

Overclocked clock speed 3.77 GHz 2.97 GHz
Overclocked clock speed (Water) 4.16 GHz 2.7 GHz
Overclocked clock speed (Air) 3.77 GHz 2.97 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 Pentium 4 520J
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Intel Core2 Duo T7500
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