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Differences What are the advantages of each

Front view of Intel Pentium 4 550

Reasons to consider the
Intel Pentium 4 550

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Significantly higher clock speed 3.4 GHz vs 3 GHz Around 15% higher clock speed
Front view of Intel Core2 Duo E8400

Reasons to consider the
Intel Core2 Duo E8400

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Much more l2 cache 6 MB vs 1 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Much newer manufacturing process 45 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better geekbench 2 (32-bit) score 2,826 vs 990 More than 2.8x better geekbench 2 (32-bit) score
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
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 better performance per watt 1.83 pt/W vs 0.87 pt/W More than 2x better performance per watt
Much lower typical power consumption 52.81W vs 93.44W Around 45% lower typical power consumption
Has a NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
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
Much better overclocked clock speed (Air) 4.22 GHz vs 3.81 GHz More than 10% better overclocked clock speed (Air)
Much lower annual home energy cost 15.66 $/year vs 27.7 $/year Around 45% lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 100.74 $/year Around 45% lower annual commercial energy cost
Newer Jan, 2008 vs Feb, 2004 Release date over 3 years later
Better overclocked clock speed (Water) 4.23 GHz vs 3.9 GHz Around 10% better overclocked clock speed (Water)

Benchmarks Real world tests of Pentium 4 550 vs Core2 Duo E8400

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 4 550
119,750 MB/s
Core2 Duo E8400
128,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

x264 HD 4.0

Pentium 4 550
10.36 fps
Core2 Duo E8400
33.59 fps

Specifications Full list of technical specs

summary

Pentium 4 550  vs
Core2 Duo E8400 
Clock speed 3.4 GHz 3 GHz
Cores Single core Dual core
Socket type
LGA 775

features

Has a NX bit No Yes
Supports trusted computing No Yes
Has virtualization support No Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
Supplemental SSE3
Supports dynamic frequency scaling No Yes

power consumption

TDP 115W 65W
Annual home energy cost 27.7 $/year 15.66 $/year
Annual commercial energy cost 100.74 $/year 56.94 $/year
Performance per watt 0.87 pt/W 1.83 pt/W
Typical power consumption 93.44W 52.81W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 800 MHz 1,333 MHz

details

Pentium 4 550  vs
Core2 Duo E8400 
Architecture x86 x86-64
Threads 2 2
L2 cache 1 MB 6 MB
L2 cache per core 1 MB/core 3 MB/core
Manufacture process 90 nm 45 nm
Transistor count 125,000,000 410,000,000
Max CPUs 1 1
Clock multiplier 17 9
Voltage range 1.2 - 1.43V 0.85 - 1.36V
Operating temperature Unknown - 72.8°C Unknown - 72.4°C

overclocking

Overclock popularity 5 125
Overclocked clock speed 3.81 GHz 4.22 GHz
Overclocked clock speed (Water) 3.9 GHz 4.23 GHz
Overclocked clock speed (Air) 3.81 GHz 4.22 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 4 550
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Intel Core2 Duo E8400
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