GTX260 55nm Modified UniSink? - Overclock.net

**DuckieHo** · 01-06-09

http://www.hardwarecanucks.com/forum...-review-8.html

Quote:

When comparing one card to the other, the differences become abundantly apparent; not only does the 55nm card have a shim around the IHS but the PCB itself is slightly longer by a few millimeters and there is a distinct “bulge” in it closer to the rear. There are also noticeable differences in the power distribution and voltage regulation sections due to the different electrical needs of the new core.

For those of you wondering; the mounting holes around the core are the same on the new card are as the outgoing product. Therefore, any compatible heatsinks or non-full coverage water blocks should fit without a problem. However, full cover water blocks will not be compatible due to the different layout of the VRMs.

I want to watercool my GTX260 55nm and it will probably be some time before a compatible hardmounted heatsink will be avaliable.

I was thinking about taking a D-Tek UniSink:

Or a Swiftech GTX200 Heatsink:

If I saw off the VRM end of the heatsink, the memory and that single IC should be covered. I could then use a RAMsinks for the remaining VRM.

Does this sound reasonable?

meticadpa · 01-06-09

Christ, I'd just wait, unless money is no object because you don't want to screw up an expensive waterblock, or worse, the waterblock fits but doesn't work properly and it fries your card.

**DuckieHo** · 01-06-09

Quote:

Originally Posted by meticadpa

Christ, I'd just wait, unless money is no object because you don't want to screw up an expensive waterblock, or worse, the waterblock fits but doesn't work properly and it fries your card.

...what?

This has nothing to do with a waterblock. I already know the waterblock fits. The question is about a hard-mounted heatsink.

Dman · 01-06-09

It should fit, it looks like the ram chips are in the same position, the block attachs on top of the unisink. I have one for my 8800gts

Basically if the unisink mounts onto the card ok and covers the chips, the block will go on no problem.

**DuckieHo** · 01-06-09

Quote:

Originally Posted by Dman

It should fit, it looks like the ram chips are in the same position, the block attachs on top of the unisink. I have one for my 8800gts

Basically if the unisink mounts onto the card ok and covers the chips, the block will go on no problem.

Look at the GTX260 65nm vs 55nm..... the memory and IC are fine. The mounting points are the same for those (except one). However, the VRM area is layed out differently. If I cut this section off the heatsink, do you think the it will still work? Any other idea for a hard mounted heatsink?

Like this:

nafljhy · 01-06-09

that should work just fine. well i think it would. though i would leave the vrm part.. just shorten it enough so that it doesn't touch the capacitators but covers the vrm... is it a flat piece of alu or is it machined be specific? if its flat, just shorten it. if it is machined.. then cut off the vrm section too.

i hope im making sense.. i just woke up.

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GTX260 55nm Modified UniSink?

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