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Differences What are the advantages of each

Front view of Intel Xeon W3505

Reasons to consider the
Intel Xeon W3505

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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
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
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Significantly better geekbench 3 single core score 1,689 vs 768 Around 2.2x better geekbench 3 single core score
Significantly better geekbench 3 Multi-Core score 2,970 vs 824 More than 3.5x better geekbench 3 Multi-Core score
Newer Jan, 2009 vs Oct, 2004 Release date over 4 years later
More cores 2 vs 1 Twice as many cores; run more applications at once
Significantly better overclocked clock speed (Water) 4.32 GHz vs 3.07 GHz More than 40% better overclocked clock speed (Water)
Front view of Intel Pentium 4 519K

Reasons to consider the
Intel Pentium 4 519K

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Higher clock speed 3.06 GHz vs 2.53 GHz More than 20% higher clock speed
Much lower typical power consumption 68.25W vs 105.63W More than 35% lower typical power consumption
Much better overclocked clock speed (Air) 4.22 GHz vs 2.53 GHz More than 65% better overclocked clock speed (Air)
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much lower annual home energy cost 20.24 $/year vs 31.32 $/year More than 35% lower annual home energy cost
Much lower annual commercial energy cost 73.58 $/year vs 113.88 $/year More than 35% lower annual commercial energy cost

Benchmarks Real world tests of Xeon W3505 vs Pentium 4 519K

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

Xeon W3505
106,000 MB/s
Pentium 4 519K
106,600 MB/s

Specifications Full list of technical specs

summary

Xeon W3505  vs
Pentium 4 519K 
Clock speed 2.53 GHz 3.06 GHz
Cores Dual core Single core
Socket type
LGA 1366
LGA 775

features

Has a NX bit Yes Yes
Has virtualization support Yes No
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes No

power consumption

TDP 130W 84W
Annual home energy cost 31.32 $/year 20.24 $/year
Annual commercial energy cost 113.88 $/year 73.58 $/year
Performance per watt 0.9 pt/W 1.03 pt/W
Typical power consumption 105.63W 68.25W

details

Xeon W3505  vs
Pentium 4 519K 
Architecture x86-64 x86-64
Threads 2 1
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 1 MB/core
Manufacture process 45 nm 90 nm
Max CPUs 1 1
Voltage range 0.8 - 1.23V 1.25 - 1.4V

overclocking

Overclocked clock speed 2.53 GHz 4.22 GHz
Overclocked clock speed (Water) 4.32 GHz 3.07 GHz
Overclocked clock speed (Air) 2.53 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

bus

Architecture QPI FSB
Number of links 1 1
Clock speed 2,400 MHz 533 MHz
Intel Xeon W3505
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Intel Pentium 4 519K
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