GPU Peltier

[Margo Baggins]

Im currently running a really small water loop, 3/8ths system, a 120x360 rad and a thermaltake cpu block. Its prooving pretty nice and im getting decent temps clocked at 3.6ghz (i did clock it to 4ghz, but i was getting 70 under load, which i thought was a bit hot.)
I want to cool my gpu's as well now. There are a few things i have thought about, and any ideas would be greatfully accepted.
1./ 2 full block covers providing watercooling to the RAM and the GPU.
2./ 2 passive memory coolers and dedicated GPU water blocks.
3./ 2 passive memory coolers and peltiers on the GPU's.

I really want to use peltiers, but i have never used them before, and im not sure what precautions need to be taken.

Anyone have any ideas, or better suggestions? Should probably mentions its for a pair of 2900's.

Thanks,
MargoB

[I.L.P]

tec cooling is more trouble than its worth, for a start need to insulate everything, then need one of them meanwell 5 1/4 bay PSU's to power the tec's, and temperatures are never that good anyway.

[I.L.P]

someone may correct me though, so take my opinion with a grain of salt :)

[Margo Baggins]

hmm i haven't really looked into it too much, i just liked there claims of being able to achieve 0 degrees and such like, was going to be an avenue into extreme cooling while i work on building my ss which could take a very long time!
So probably the best solution would be a full water block accross the ram and the gpu. would it be worth putting a 120.1 thermochill rad in after the cpu? also, would it be a wise idea to split the chain using a y splitter so both cards get and intake and then the outtake joins once again to go back t the begining of the system?

Thanks for your quick response :D

[weescott]

You will need to volt mod the card to make it worth while. cover the block in DC4/Liquid electrical tape. Have a beefy PSU or a meanwell PSU to run the TEC.
Ram sinks are only worth it if you are V modding the ram on the card as well which wont get you much of a gain in benchies anyway. It all helps in this game though.

Full cover block = no pelt, worst performance. (EK blocks are the best)
Pelt on card = volt mod. ramsinks not needed
pelt on card with ram and GPU mod, ramsinks and fan = ultimate bench set up.

Normal GPU block and no ram sinks = for quietness or because you can. No performance gain.

[Margo Baggins]

I reallly dont think i am able to volt mod my cards, dont get me wrong, i would love to do so, but i have big clumsy hands, and its been a bad week for wreckin hardware, so im not sure i will do that. so does this mean a peltier would be pretty useless to me. and the only thing i would gain from putting a normal block on the card would be silence?

[ncc-1709]

ive used pelts several times, and you can get as good temps from ice in your resiovoir as you can with a 320w pelt. plus it will each eletric for breakfast.

[weescott]

Yip, a pelt would be a waste without volt modding the card. You could ask other members here to volt mod the card for you. Not me though because I have banana hands.

watercooled cards can get you maybe 10mhz more if you are lucky. they also have the benifit of taking heat out of your case.

[Margo Baggins]

Does anyone fancy voltmodding my cards for me? im not sure what the going rate is, i am a reasonably guy though :D If anyone fancies being a superhero drop me a pm.

[BigAndy]

Does anyone fancy voltmodding my cards for me? im not sure what the going rate is, i am a reasonably guy though :D If anyone fancies being a superhero drop me a pm.

Speak to persivore ;).

[I.L.P]

yeah persivore, doing mine for me soon when i got the cash :D

[Stocky]

It sounds to me that you'll be best of with basic waterblocks for now. However, if you're thinking of peltier/TEC cooling you'll probably need to beef up your water system a fair bit. I have run a GPU (X800XTPE & 6800U) with a 110W TEC with good results from an ATX PSU, so it is possible. Without vMods it would be a little pointless though as you won't gain much without upping the volts, and of course a dedicated PSU is preffered.