Grease or pads for mosfet?

The Halk · 13 May 2007 at 12:42

Alright, I'm waiting on a mosfet waterblock arriving, so in the mean time I lapped down the other one - turned out the bottom of it was concave, now it's flat. Never lapped aluminium before, the appearance didn't change past 600 grit.

So, I have some thermal pads (decent ones) I also have some MX-1 arriving, and I have Ceramique.

Which would be best to cool mofsets on a motherboard?

Edit : I already realise the difference between Ceramique and MX-1 will be small, and also since I'm sure Ceramique won't conduct electricity, it's really a choice between pads and Ceramique paste.

elfy · 13 May 2007 at 13:11

i'm going with pads for my setup, just to make sure they stay still in the right place

The Halk · 13 May 2007 at 13:47

Well, staying in place shouldn't be an issue, I'm using nuts and bolts to fit the blocks, so I'll be able to get as much pressure as plastic bolts allow.

I can't really think of any reason not to use the paste to be honest. I suppose I'm just asking in case someone says "Oh noes! Not paste on mosfets!"

elfy · 13 May 2007 at 13:48

ahhh my mosfet coolers don't have bolts or anything, then yes, use the gunk

Jokester · 13 May 2007 at 13:52

Nah, no problem with using paste, I usually put a drop of ceramique on instead of the rubbery strips they seem to be using these days.

Is that block going to be a separate loop to the CPU etc?

Jokester

The Halk · 13 May 2007 at 13:53

Now I just need to work out how to get tubing from one to the other

It's not going in a separate loop.The PC is "finished" and I'm left with annoying little fans that Abit put on. I realise this will impact the rest of the cooling, but to be frank the watercooling is instantly removing heat from the CPU/GFX card etc, so there's a bit of room in it.

Aside from that I can't fathom out how a second loop would be controllable or worthwhile - but it isn't _totally_ out of the question.

At the moment the water goes from the pump to the CPU, it goes through a mesh on the CPU cooler, everything else is a straight pass through (unless there's a mesh inside the GFX block, which I am not aware of). It's 1/8 tubing, so there's no problem with flow rate.