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Differences What are the advantages of each

Front view of Intel Pentium 4 515

Reasons to consider the
Intel Pentium 4 515

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Higher clock speed 2.93 GHz vs 2.6 GHz Around 15% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Better overclocked clock speed (Air) 3.92 GHz vs 3.85 GHz Almost the same
Better overclocked clock speed (Water) 2.93 GHz vs 2.6 GHz Around 15% better overclocked clock speed (Water)
Front view of Intel Celeron E3400

Reasons to consider the
Intel Celeron E3400

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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 2,275 vs 745 More than 3x 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
More threads 2 vs 1 Twice as many threads
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 1.64 pt/W vs 0.99 pt/W More than 65% better performance per watt
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Significantly lower typical power consumption 52.81W vs 68.25W Around 25% lower typical power consumption
Much higher Maximum operating temperature 74.1 °C vs 67.7 °C Around 10% higher Maximum operating temperature
Newer Jan, 2010 vs Jul, 2005 Release date over 4 years later
Significantly lower annual home energy cost 15.66 $/year vs 20.24 $/year Around 25% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 73.58 $/year Around 25% lower annual commercial energy cost

Benchmarks Real world tests of Pentium 4 515 vs Celeron E3400

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 4 515
102,400 MB/s
Celeron E3400
110,600 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

Specifications Full list of technical specs

summary

Pentium 4 515  vs
Celeron E3400 
Clock speed 2.93 GHz 2.6 GHz
Cores Single core Dual core
Socket type
LGA 775

features

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

power consumption

TDP 84W 65W
Annual home energy cost 20.24 $/year 15.66 $/year
Annual commercial energy cost 73.58 $/year 56.94 $/year
Performance per watt 0.99 pt/W 1.64 pt/W
Typical power consumption 68.25W 52.81W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 533 MHz 800 MHz

details

Pentium 4 515  vs
Celeron E3400 
Architecture x86 x86-64
Threads 1 2
L2 cache 1 MB 1 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 90 nm 45 nm
Max CPUs 1 1
Clock multiplier 22 13
Voltage range 1.25 - 1.4V 0.85 - 1.36V
Operating temperature Unknown - 67.7°C Unknown - 74.1°C

overclocking

Overclocked clock speed 3.92 GHz 3.85 GHz
Overclocked clock speed (Water) 2.93 GHz 2.6 GHz
Overclocked clock speed (Air) 3.92 GHz 3.85 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 4 515
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Intel Celeron E3400
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