a simple material question

[bigbang]

i just wanted to know which materials are the best for cpu, gpu and memory cooling. (heatsink materials)
can anybody help?

 

[Mr5oh]

Generrally todays heatsinks are made out of either alumminum or copper, copper obvisuly being better. There are some other materials out there that are better than copper, but generally are to exspensive to make heatsinks out of. I believe Silver has a low thermal resistance than copper, I believe I read something about Diamonds having even less thermal resistance than silver. Search the net and I'm sure you can find some sort of chart with all sorts of materials.

Generally for CPUs and GPUs pick something made of copper.

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[bigbang]

but wait a minute, i had an original intel fan made of aluminum , then i bought a thermaltake volcano 7 because i wanted to overclock. my cpu temperature with my original fan was about 48. when i got volcano and installed it ,which apparently is made of copper, without overclocking and in idle situation , my cpu temperature was 55, and in the games it asked me to shut my computer because it reached 70!
i cant understand because the volcano fan was 6000 rpm and intel one is maximum 3000.

pc spec:
P4 2.8c
MSI 865PE PFISR
512mb(2*256) Corsair VS pc3200
Sapphire Radeon 9800pro 128mb
PSU 350watt
Maxtor 120gb+40Gb 7200rpm EIDE

 

[etp777]

rpms don't indicate actual air flow, just speed it spins at

But best bet, as long asfan is turning, is that you just didn't get the new HSF installed correctly.

 

[Mr5oh]

Retail heatsinks really aren't that bad anymore. However, I assure you that copper is a much better heatsink material than alumminum.

You temps with the Volcano7 don't sound quite right? Did you properly apply thermal grease? Are you sure its seated properly?

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[jammydodger]

I agree with Mr5oh, those temps are far too high for that heatsink.
Reapply thermal paste and make sure the base of the heatsink is making good contact with the CPU.

 

[Cybercraig]

You just can't beat a P4 Copper core lapped heatsink/fan with anything. I just won a bet with someone who loves the Zalman 7000's. We put the hybrid al/cu version on my P4 rig, and there is no difference at all in temps with the Zalman turned up to high. It is a little quieter but it cools NO better. So now, I have a free Zalman! YAY! Whoopdee do!

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Sony DRU-510A - Yellowtail Merlot

 

[Mr5oh]

It really is amazing how good the heatsinks that come with retail CPUs are today. I remember when any aftermarket heatsink made a big difference, now a high end heatsink makes a small difference.

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[Cybercraig]

yea, the 3.2C heatsink is a real keeper. It does get loud playing Doom3 though. You'd think you were at the airport!

Abit IS7 - 2.8C @ 3.4ghz - Mushkin PC4000 (2 X 512) - Sapphire 9800Pro - TT 420 watt Pure Power
Samsung 120gb ATA-100 - Maxtor 40gb ATA - 100
Sony DRU-510A - Yellowtail Merlot

 

[bigbang]

im sorry to say that , but i checked everything you asked while installing it and i installed it again after you said check the thermal grease and used a thermal take silicon grease for any exception, but it seems to not work. cable from fan is installed correctly and still, i have to shut my computer dows while im playing doom III.

 

[Mr5oh]

What are your case temps? Are they pretty high? What temperature is the room your computer is in?



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[Crashman]

A comparison with the Zalman CNPS7000A showed the AlCu outperforming the CU.

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[Crashman]

I'll take that Zalman off your hands.

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[bigbang]

my case temperature wont go higher than 40. i check it with corecenter.