what is the role of paste used below the processor?
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To give you a short-no-bs reason, the thermal paste between the cpu and the heatsink-fan (HSF) is used to better the heat transfer from cpu core to the heatsink. Every metal surface has tiny pores which may trap air and make the heat transfer slow. Now that may raise a question in your head, why would we wanna better the heat transfer? Well, that's a simple high-school science topic: The resistance of a metal increases with temperature. Hope that clarifies it for ya.
Now, if you still have some doubts, read this: *www.neoseeker.com/Hardware/faqs/kb/2,22.html
Now, if you still have some doubts, read this: *www.neoseeker.com/Hardware/faqs/kb/2,22.html
@kalpik: Did i say otherwise? Ofcourse, "...we want the maximum heat to be transferred to the heatsink so that it can dissipate it faster." But why do you want better heat dissipation? I answered that by saying, "Now that may raise a question in your head, why would we wanna better the heat transfer? Well, that's a simple high-school science topic: The resistance of a metal increases with temperature." :roll:
@siriusb: I agree.
Anybody looking for some good reading on Thermal Interface Material: Grease vs. Pads may refer to this amd document:
*www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/26951.pdf
@siriusb: I agree.
Anybody looking for some good reading on Thermal Interface Material: Grease vs. Pads may refer to this amd document:
*www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/26951.pdf
praka123
left this forum longback
So i need to apply thermal paste b/w HF and Processor(is a p4 2.8 HT prescott on 915 GAV intel original)which got a heating problem?what thermal paste will i use?(easy to get).can i reassemble the processor heatsinkfan combi?what should i do to clean the processor surface>?some people say we need to redo the thermal paste every year...? 
@prakash kerala: Yes, you should use some thermal paste b/w the HSF and the cpu core. If you've a boxed CPU then it came with a thermal pad already applied to the HSF so you prolly don't need to change it. Not really sure if it's available in India but i use Arctic Silver 5 thermal paste and it's worked great for me. Ask a local assembler and he could help you with it. You can re-assemble your HSF-CPU as long as you put new paste every time you put them apart. Changing the thermal paste every year is not a bad idea but is not necessarily needed unless your temps go really high.
Here's a step-by-step guide.
Here's a step-by-step guide.
kalpik
In Pursuit of "Happyness"
Im really sorry but u said "The resistance of a metal increases with temperature." What does that have to do with the processor?? How does the resistance of the processor or the heatsink matter?? I really didnt get that! Could you please explain in more detail?!
Thanks..
Thanks..
Alrite, there's a sorry, please AND a thanks thrown in there so i have to watch my mouth now.
Either you don't know s_hit about processors or for that matter, any hardware, or you are just acting dumb for some reason. Here's a link explaining how cpus are fabricated using metals and silicon. And here's a link explaining temperature affect on cpu.
If you still don't get it, here's the low-down:
High Temperature --> More resistance inside the cpu fabricated using metals and silicon -->= low conductivity --> slower signal (/data) transfer inside the cpu --> low performance
....to read this in a sentence, you can read "-->" as "gives rise to".
Since I did high-school as well as two years of engineering college physics, it would probably sound too complex if i go about explaining how the resistance of a metal increases with temperature. Nevertheless, here's a try:
a metal getting hot --> random electron motion inside the metal increases --> lower drift velocity of the electrons i.e. heat creates resistance --> lower conductivity
Here's some more:
Peace.
Either you don't know s_hit about processors or for that matter, any hardware, or you are just acting dumb for some reason. Here's a link explaining how cpus are fabricated using metals and silicon. And here's a link explaining temperature affect on cpu.
If you still don't get it, here's the low-down:
High Temperature --> More resistance inside the cpu fabricated using metals and silicon -->= low conductivity --> slower signal (/data) transfer inside the cpu --> low performance
....to read this in a sentence, you can read "-->" as "gives rise to".
Since I did high-school as well as two years of engineering college physics, it would probably sound too complex if i go about explaining how the resistance of a metal increases with temperature. Nevertheless, here's a try:
a metal getting hot --> random electron motion inside the metal increases --> lower drift velocity of the electrons i.e. heat creates resistance --> lower conductivity
Here's some more:
Peace.
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