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NVIDIA GTX 590 Owners Club - Page 455

post #4541 of 5154
Quote:
Originally Posted by Canis-X View Post

Such beauties they are!! biggrin.gifthumb.gif

I orderd an EK bridge system (expensive redface.gif) to tie them together. Its also more structurally secured as the bottom one is sagging a bit and the sli fittings are prone to leak with any movement. I'm also experiencing 5°c more on one of the cores which I'm suspecting the block isn't making good contact. Just configured Surround but i have yet to game. Though I'm excited to see how it goes.
post #4542 of 5154
A thermal delta of 2-7C between the cores is perfectly normal. I have mounted blocks 6 times and every single time it had the same delta. It's just because the difference between fins to water is smaller at the second core since the water has already absorbed thermal energy from the first core. Even the stock coolers will show this difference.
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post #4543 of 5154
Quote:
Originally Posted by MKHunt View Post

A thermal delta of 2-7C between the cores is perfectly normal. I have mounted blocks 6 times and every single time it had the same delta. It's just because the difference between fins to water is smaller at the second core since the water has already absorbed thermal energy from the first core. Even the stock coolers will show this difference.

Found the issue, either EK didn't thread their screw holes deep enough or they should have included shorter screws. Both blocks have a lot of play on the washer for all mounting screws. Its worse on the second core. I found some spare 6mm screws (compared to the EK 8mm) and I got one block done and the temps went down drastically. The first cored dropped 5c and the second 10c!. I don't have enough for the second one so I'm going have leave that for now. I'll be ordering some custom screws from mcmastercarr.com.

edit: Home Depot has the screws I need so I'll make a trip there today smile.gif
Edited by wermad - 10/2/12 at 3:10pm
post #4544 of 5154
What temps do you have? With one 590 with EK block I got 36C idle and 60C average with 25C ambient temps! smile.gif this with a custom watercooler system!
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post #4545 of 5154
Ok, just tested asus mars 2 bios and it's a no go... mad.gif
Screen corruption starting from bios and on into windows, system didn't recognize the card as a 590
Had to flash back to original bios, so, asus with bios version 42 cannot be flashed with this bios, you lucky bastards wink.gif with bios revision 37 can try as it will surely work, to all of us with rev. 42 will have to wait for Nibitor support to edit the bios and make it work with our cards !thumb.gif
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post #4546 of 5154
Quote:
Originally Posted by OccamRazor View Post

What temps do you have? With one 590 with EK block I got 36C idle and 60C average with 25C ambient temps! smile.gif this with a custom watercooler system!

I think you need to examine the mounting.

jNsReVUypPKiH.PNG
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post #4547 of 5154
I've got a passive watercooler system, that's why the temps are high compared with yours! What's your ambient temp?
Cheers

Ed
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post #4548 of 5154
Ok, turns out the the screws that worked are 8mm but flat head, so the threads are slightly shorter (~6.5-7mm) which is enough to grab the threads. Seems like no one makes 7mm philips head and I already placed an order with mcmastercarr.com for 6mm philips head. If they don't fit, I'll order the flat head ones. The second block wasn't that bad and most screws I was able to turn them a bit more to address the issue.

Temps on all four are now stable ~34c each wheee.gif. Its a bit hot in my area so these will be a tad bit high. I haven't loaded the cards yet but I'm hopping they stay under 50c smile.gif
post #4549 of 5154
Quote:
Originally Posted by OccamRazor View Post

I've got a passive watercooler system, that's why the temps are high compared with yours! What's your ambient temp?
Cheers
Ed

24C ambient.

Passive you say? That sounds nearly silent. Do you have a link to your setup?
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post #4550 of 5154
No but I can take pics and post it, and yes it's nearly silent! biggrin.gif
It's a double zalman reserator ( not double loop) with 600lt/h pumps on each reservoir, one for the cpu, other for the vga, but the catch is they're outside the house, drilled holes in the wall to pass the tubes and made a housing for the reservoirs! You'll understand better with the pictures! thumb.gif

Cheers

Ed
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