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Differences What are the advantages of each

Front view of Intel Pentium D 945

Reasons to consider the
Intel Pentium D 945

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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
Front view of Intel Pentium 4 520

Reasons to consider the
Intel Pentium 4 520

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CPUBoss is not aware of any important advantages of the Pentium 4 520 vs the Pentium D 945.

Benchmarks Real world tests of Pentium D 945 vs 4 520

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

Specifications Full list of technical specs

summary

Pentium D 945  vs
4 520 
Clock speed 3.4 GHz 2.8 GHz
Cores Dual core Single core
Socket type
LGA 775

features

Has virtualization support No No
Supports dynamic frequency scaling Yes No

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

details

Pentium D 945  vs
4 520 
Architecture x86-64 x86
Threads 2 1
L2 cache 4 MB 1 MB
L2 cache per core 2 MB/core 1 MB/core
Manufacture process 65 nm 90 nm
Transistor count 376,000,000 125,000,000
Max CPUs 1 1
Voltage range 1.2 - 1.34V 1.25 - 1.4V
Operating temperature Unknown - 63.4°C Unknown - 67.7°C

power consumption

TDP 95W 84W
Annual home energy cost 22.89 $/year 20.24 $/year
Annual commercial energy cost 83.22 $/year 73.58 $/year
Typical power consumption 77.19W 68.25W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 800 MHz 800 MHz
Intel Pentium D 945
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Intel Pentium 4 520
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