over heat problem

[Rob P.]

Heat rises, so the top card in a stack will always be the hottest.

thanks all for you help. please accept the little thing i sent your way

Received.  Very much appreciated.

I have a 4 x 5830 setup similar to yours.  I can't keep the cards at an acceptable temp when all 4 are sandwiched that way.  I haven't yet tried to use spacers in the cards and I'm playing with side panel fans as well.  I've already turned the rig on it's side (even though the case isn't designed to rest on it's side) to keep the heat from affecting the other cards.

Your only solution may be extenders.

Also, you may want to check out the shrouds around the cards.  On some cards they're decretive and on other cards they force air over the cooling fins.  If they're decretive, you should take them off, as it will improve air flow between the cards.

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[The00Dustin]

thanks all for you help. please accept the little thing i sent your way

I only suggested something you had already tried, but thanks, here's something else you might have already tried... 

The room temp is around 75F which I guess is like ~20C.

20C = 68F, exactly.  75F is not going to be an exact match, and I'm not going to do the math right now, but if you don't know how to do the math, you can type "convert 75F to C" in Google and it will tell you that it is 23.8888889C (which may or may not be 23.8 repeating rounded up).

[k9quaint]

Packing that many cards into a small case will always run hot. I doubt you can keep them cool enough to mine 24/7 without doing heat damage to at least one of the cards.

Get a really big fan and blow lots of air directly on/between them. Leave the case sides off.

[newminerr]

Thanks for all the tips and comments guys, really appreciated.
I am taking notes and will consider them while building the other setup when i get next month's paycheck

The 5xxx seem to generate less heat than the 6xxx? [yes/no]?

And there is heat pipes in the card, should i run water into them or something? lol

[Rob P.]

The 5xxx seem to generate less heat than the 6xxx? [yes/no]?

Correct.  Depending on which ones you have, the 6XXX series have multiple GPUs on them.  I'd need specific models to actually assess the statement.  As 5830s run cooler than 5850s, etc.  It's all about the chips and how far you over clock them.

And there is heat pipes in the card, should i run water into them or something? lol

Um, no.  The copper "pipes" conduct heat from the GPU up to the large heatsink fins.  The fans blow over the fins and cool them.  The only option you have for water cooling is if your GPU model has a water cooler built for it.  Then you can remove the entire fan assembly from the card and replace it with a water block.  However, not all GPUs have water blocks designed for them.  Also water blocks add quite a bit of cost to the cards.  It would probably be cheaper just to go with only 3 cards on the board, and get another board.