IC7 all versions and PLL cooling

confused · Jul 28, 2004

Is everyone using some sort of cooling on the PLL chip, either microsink or other applicable passive cooling. Or how many people are OC'in without any cooling on the PLL?

Im thinking about yanking the passive sink of my defective P4C800E dlx board before i send it in and adhere it to the PLL chip

deathstar13 · Jul 28, 2004

the higher the fsb goes the hotter mine got.
i use a heatsink the half the size of a north bridge heatsink cut in half.
but i run 290+ fsb so i need it.

i just cut up what i have laying around in my heatsink collection.hacksaw does the job nicley or a dremel if i had one.
but it does help imo to sink it up.
im really carefull tho and a little over pretective about heat issues while running a prescott.it may not be necesary but it surely wouldnt hurt.

Don K · Jul 28, 2004

Deathstar

Excuse the ignorance, but exactly which parts need added cooling, when OC'ing a Prescott on a Max3? An how do i identify them?

batboy · Jul 28, 2004

I would say that most people using Northwoods are probably not doing many mobo cooling mods other than maybe upgrading northbridge cooling. The Max3 has it's own special OTES mosfet cooling. I'm sure this is better than nothing, but I've heard some people claim it's a little wimpy. If you are planning to try a Prescott, then I highly recommend cooling mods if you want a high O/C.

Here is a pic of my IC7-G showing what I did. The red arrows point to mosfet sinks I installed, the yellow arrow points to a sink on the PLL or clock generator chip (I used two mosfet sinks side by side), and the blue arrow points to a sink on the southbridge chip. These are all Microcool heatsinks shown in the pic. The northbridge cooling in the pic is stock, I have since added a Thermaltake N/B cooler. I should take another pic I suppose.

You really probably don't need extra PLL chip cooling unless you are running high FSB and/or a Prescott.

Chaos_Being · Jul 28, 2004

I'm going to do exactly what Batboy did to his IC7 to mine- actually, all of the sinks are ordered and should be on their way.

batboy · Jul 28, 2004

Here's what it looks like now that's it's fully installed and operational.

confused · Jul 28, 2004

Thanks for all the info, i still might put the ole passive NB cooler off my Asus board on my PLL chip, only running 250 FSB, for now

batboy · Jul 28, 2004

Do it if you really want, but that's a big heatsink for a little chip. Watch out for a couple of caps between the PLL and N/B, plus the N/B fan header is not far away. The southbridge can get a little warm too, you might consider putting your extra N/B sink on the S/B chip and then find a slightly smaller one for the PLL chip (or cut down a sink). The PLL clock generator chip is sort of long and narrow. Keep us posted with results.

deathstar13 · Jul 29, 2004

batboy i think you have missed a very hot set of mosfets i think i forgot to mention.
i circled it on your pic. the agp mosfets.
isnt the most important but can be and gets hot as heck even with a ramsink on them.for people ocing with volt modded agp cards its needed but i do it as im just paranoid about cooling everything.

batboy · Jul 29, 2004

Decided to follow your advice, Deathstar, but I don't have anything that will fit onto one of the circled mosfets closest to the southbridge (the caps are too close). I'll need to cut or grind one of my sinks down a little.

deathstar13 · Jul 29, 2004

i took one and hacksawed it so it is long and narrow sink now.
honestly i could and still can burn my finger with a ramsink on them with a large 120mm fan blowing bottom half my case and still its smoken hot.

what i did was lay it so it runs almost parallel to the pci slots. mine is 1/4"x 1"

Chaos_Being · Jul 30, 2004

I just got my microcool sinks, and sidwindercomputers sent me an extra mosfet chipsink instead of a PLL one... think it will still work ok? It just won't cover the chip all the way. Contacting them about a $1.50 chipsink just doesn't seem worth it.

batboy · Jul 30, 2004

I used two mosfet heatsinks side by side on my PLL chip. One will probably be better than none, but it would be nice to cover the whole chip.

Chaos_Being · Jul 30, 2004

Yeah- I sent an email to them anyways, we'll see what happens. Either way that chip is getting some sort of heatsink on it

batboy · Jul 30, 2004

I once ordered two 120mm fans and was sent two 80mm fans instead. I sent a nice email telling them what happened. They told me to keep the fans I got and that they would send me the additional fans that I ordered free of charge, which they did. Perhaps that will be what happens in your situation.

Chaos_Being · Jul 30, 2004

Yep that's exactly what happened, I have a PLL chipsink on its way and an extra mosfet sink on my hands. I think I'll try putting it on the AGP mosfet that Deathstar is talking about

Evilsizer · Jul 30, 2004

batboy said:
Here's what it looks like now that's it's fully installed and operational.

what case is that your using and is that a dual rad?

batboy · Jul 30, 2004

Two 120mm fans, but single rad which is attached to the back of the computer. It's a Swiftech Q-Power case that came completely pre-modded, assembled, and ready to go. Here's a link that explains all. It's a good no-brainer beginner's watercooling system. You can probably build a better system for a little less if you were motivated.

http://www.overclockers.com/articles542/

Evilsizer · Jul 30, 2004

thats a nice case but i dont see it for sell anywhere i go to.

batboy · Jul 30, 2004

I got it from Sidewinder Computers last summer. Not sure if it's still available. I got the optional GPU water block too.

IC7 all versions and PLL cooling

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