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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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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 higher clock speed 3.4 GHz vs 2.7 GHz More than 25% higher clock speed
Much more l2 cache per core 2 MB/core vs 0.5 MB/core 4x more l2 cache per core
Much better overclocked clock speed (Air) 4.22 GHz vs 3.61 GHz More than 15% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.59 GHz vs 3.38 GHz More than 35% better overclocked clock speed (Water)
Front view of AMD Athlon X2 5200+

Reasons to consider the
AMD Athlon X2 5200+

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Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Significantly higher Maximum operating temperature 68 °C vs 63.4 °C More than 5% higher Maximum operating temperature
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost
Newer Aug, 2010 vs Jul, 2006 Release date over 4 years later

Benchmarks Real world tests of Pentium D 945 vs Athlon X2 5200+

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Pentium D 945
122,800 MB/s
Athlon X2 5200+
54.2 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

Specifications Full list of technical specs

summary

Pentium D 945  vs
Athlon X2 5200+ 
Clock speed 3.4 GHz 2.7 GHz
Cores Dual core Dual core
Socket type
LGA 775
AM3
AM2

features

Has a NX bit Yes Yes
Has virtualization support No Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 95W 65W
Annual home energy cost 22.89 $/year 15.66 $/year
Annual commercial energy cost 83.22 $/year 56.94 $/year
Performance per watt 1.14 pt/W 0.78 pt/W
Typical power consumption 77.19W 52.81W

bus

Clock speed 800 MHz 2,000 MHz

details

Pentium D 945  vs
Athlon X2 5200+ 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 4 MB 1 MB
L2 cache per core 2 MB/core 0.5 MB/core
Manufacture process 65 nm 65 nm
Max CPUs 1 1
Voltage range 1.2 - 1.34V 0.95 - 1.4V
Operating temperature Unknown - 63.4°C 55 - 68°C

overclocking

Overclocked clock speed 4.22 GHz 3.61 GHz
Overclocked clock speed (Water) 4.59 GHz 3.38 GHz
PassMark (Overclocked) 1,049.4 1,603.5
Overclocked clock speed (Air) 4.22 GHz 3.61 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 D 945
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AMD Athlon X2 5200+
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