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Differences What are the advantages of each

Front view of Intel Pentium 4 521

Reasons to consider the
Intel Pentium 4 521

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Much higher clock speed 2.8 GHz vs 1.2 GHz More than 2.2x higher clock speed
Much more l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much newer manufacturing process 90 nm vs 130 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 threads 2 vs 1 Twice as many threads
Much better overclocked clock speed (Air) 3.72 GHz vs 2.93 GHz More than 25% better overclocked clock speed (Air)
Has a NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Water) 4.28 GHz vs 2.13 GHz More than 2x better overclocked clock speed (Water)
Slightly higher Maximum operating temperature 67.7 °C vs 67 °C Almost the same
Newer Jul, 2005 vs Jan, 2004 Release date over 1 years later
Front view of Intel Celeron D 310

Reasons to consider the
Intel Celeron D 310

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Much lower typical power consumption 19.91W vs 68.25W 3.4x lower typical power consumption
Much lower annual home energy cost 5.9 $/year vs 20.24 $/year 3.4x lower annual home energy cost
Much lower annual commercial energy cost 21.46 $/year vs 73.58 $/year 3.4x lower annual commercial energy cost

Features Key features of the Pentium 4 521  vs Celeron D 310 

clock speed

Pentium 4 521
2.8 GHz
Celeron D 310
1.2 GHz

L2 cache

overclocked clock speed (air)

Pentium 4 521
3.72 GHz
Celeron D 310
2.93 GHz

overclocked clock speed (water)

Pentium 4 521
4.28 GHz
Celeron D 310
2.13 GHz

Specifications Full list of technical specs

summary

Pentium 4 521  vs
Celeron D 310 
Clock speed 2.8 GHz 1.2 GHz
Cores Single core Single core
Socket type
LGA 775
479
478

features

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

power consumption

TDP 84W 24.5W
Annual home energy cost 20.24 $/year 5.9 $/year
Annual commercial energy cost 73.58 $/year 21.46 $/year
Typical power consumption 68.25W 19.91W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 800 MHz 400 MHz

details

Pentium 4 521  vs
Celeron D 310 
Architecture x86-64 x86
Threads 2 1
L2 cache 1 MB 0.5 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 90 nm 130 nm
Transistor count 125,000,000 77,000,000
Max CPUs 1 1
Clock multiplier 14 16
Voltage range 1.2 - 1.43V 1.25 - 1.4V
Operating temperature Unknown - 67.7°C Unknown - 67°C

overclocking

Overclocked clock speed 3.72 GHz 2.93 GHz
Overclocked clock speed (Water) 4.28 GHz 2.13 GHz
PassMark (Overclocked) 713.8 521.3
Overclocked clock speed (Air) 3.72 GHz 2.93 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 4 521
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Intel Celeron D 310
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