CPU upgrade TDP 11w higher!

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Tx4

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Oct 27, 2013
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Thinking up upgrading my Pentium 4 HT 630 3Ghz to a Pentium D 930 3.0GHz.

I've checked the current PC's chipset Intel: i945P, (compatible Pentium D 930)
The Pentium D 930 3.0GHz has a FSB of 800MHz same as the Pentium 4 HT 630.
Both CPUs use a 775 LGA socket. However the D930 has a TDP 11w higher than the 4 HT 630. Will that cause a problem for the CPU fan cooler? Also will it over work the PSU which is only a 305 W?

The Mother board is a Dell 0WG261.
 
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Ubrales

Yes, you are right! The PSU for a computer is arrived at by pretty much adding up...
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Tx4

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Oct 27, 2013
15
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Close! It's a Dell Dimension 5150, need to upgrade cpu to make it compatible with W8.1 before xp support withdrawn Apr 2014!

Pentium D 930 has a TDP of 95W, stock cooler is for the 84 W Pentium 4 HT 630 will it cope?

GPU is a RADEON X600 256MB HyperMemory (can't find any specs of power consumption) but want to upgrade was thinking about a Sapphire HD6450 1GB but spec recommends a 400w PSU:(

Is there method of calculating how much headroom the PSU has?

Is it simply adding up the max power consumption of Mobo, CPU, GPU, any Cards,+ memory + power conversion loss? I have no idea how much power memory sticks would consume, not much I might guess.
 
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Tx4

Honorable
Oct 27, 2013
15
0
10,510
I was going to use Arctic Cooling MX-4 4g Thermal Compound, but I've read several people mentioning Artic Silver 5 is it the best or are all thermal compounds very much the same?
 
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Ubrales

Ubrales

Polypheme
Dec 3, 2009
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Some are 'more equal' than others. I use Arctic Silver 5 or Arctic Silver Ceramique - depends on which one I find first!
 
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Ubrales

Ubrales

Polypheme
Dec 3, 2009
13,234
8
61,465

Yes, you are right! The PSU for a computer is arrived at by pretty much adding up the max draw of the components and allowing some room for capacitors ageing and efficiency over time. Personally, I like to use a 30% safety margin at the low end and a 20% margin at the high end as far as power is concerned.

My final decision in most cases is based on what's on sale!

The PSU calculators are a good guide.

http://support.asus.com/powersupply.aspx
http://images10.newegg.com/BizIntell/tool/psucalc/index.html
http://www.thermaltake.outervision.com/

What is most important is the quality of the PSU. Go with Corsair, Seasonic, XFX, Antec, to name a few. Buy what's on sale!
 
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