[MaadDaawg]

Started thinking today, which is always dangerous, and hit upon an idea that may or may not work. Depending water flow I think.

What if instead of a radiator, you hooked a CPU water block up to the head of an SS and used that to cool the GPU loop? In this case, the thought occurred to me regarding chilling the water for my quad sli 580s. The Feser quad does a good job, and I have a DYI chiller unit, but since I have a spare SS and CPU water block, my mind wandered into this idea.

Would it work so long as the water flow was maintained? I think so, but I'm thinking I might be SOL if the rig needs to reboot too often while tuning the OC.

huh??

[Kal-EL]

I'm guessing the coolant would freeze in the block before leaving and stop the flow.

[Witchdoctor]

you would have to introduce a glycol solution / AKA antifreeze

take the rads out of the loop

I woould also keep the flow as slow as possiple to maximixe heat transfere at the block, but yes it would work under those circumstances ........

you will probably create condinsation so insulating the cards would not be a bad idea

but it depends on what type of heat transfer you get across the block and flow will determin

I would have to think with a 20 run time you could drop the loop temp considerably

it may have to catch up between benches as 4 of those will put off some heeat

[GFDuke]

I don't think there would be enough surface area on a water block to keep the loop cold. i guess that would depend on the lenght of the loop. You could always try it and let us know.

[MaadDaawg]

I think WD is right, and disassembling and erasering the cards isn't something I think I want to spend time on right now. The heat of the 4 gpus should keep a glycol solution mostly liquid but I had been thinking water like Supes. Surface area is another good concern.

oh well, back to the drawing board

[Witchdoctor]

Kmart

32 quart cooler

Add 4/120 radiator ....... insert 30 lbs. of ice on top of it

turn on system and comence benching FTW .............

[MaadDaawg]

Originally Posted by Witchdoctor

Kmart

32 quart cooler

Add 4/120 radiator ....... insert 30 lbs. of ice on top of it

turn on system and comence benching FTW .............

I have one of those big beer chest coolers with a collapsable handle in which I've wound 50ft of 1/2 copper tubing connected to a 300gph fish tank pump, with a little resv to fill and monitor it. It's hooked to about 10ft of hose on each side. Fits 60lbs of wet ice. I've used it before to great effect, I think my VRs were down in the 7C range and the GPUs were about 14C. May break that out again but again condensation is a worry

[Mr.Scott]

you would have to introduce a glycol solution / AKA antifreeze

Gets too thick that cold. Windshield juice.

[Bones]

I've tried supercooling a loop before with DICE and learned a few things.

As Witchy said earlier, take the rad out of the loop, your coolant will freeze in it and stop coolant flow. I also tried a mix of antifreeze and water, got too thick for the pump to move it and since I could not find anything else to use at the time, poured a spare bottle of 190 proof (Everclear) in the res and that did the trick.
Be sure to start off if using an open res as I do, You'll need to have the coolant being used chilled FIRST.
I was starting with a dry res and I would pour the coolant being used in, then slowly add the DICE - It creates a boiling effect as it sunlimes and could cause the same thing as a boilover that hot water could do in a pot for example. Start the system to bleedoff any air bubbles though before actually adding the DICE to the coolant. Once you see the air bubbles are gone, add the DICE.

Correct me if I'm wrong but I think it's denatured alchohol that will do the same thing and it's cheaper too.

The pieces of DICE themselves created an "Iceball" in my res that took a long time to melt away and as it did, the remaining DICE would refeeeze the water around it creating a small block of ice that lasted for sometime = Good for longer runs.
I actually had several of these blocks in it and they kept coolant temps low for sometime. Just having one or two didn't make alot of difference but having several of these going in the res did the job. Had to do some testing to see what the best "Balance" of these iceballs would be, obviously the more you have the colder your temps will be but even with the coolant treated as such, too much DICE will cause freezing problems unless the coolant simply won't freeze at DICE temps.
That wasn't the case when I was testing (The coolant would freeze but not badly) and I also noted once these were present, temps did come up but stayed low enough to do some good benching.
I had to be sure the res itself was insulated vs condensation and be sure what did drip was caught by a pigmat to control the mess - Had the res sitting on one of those for that purpose. Of course be sure your coolant lines are also insulated vs condensation and be sure any water that runs along /drips from them doesn't cause trouble.

[Witchdoctor]

Wow bones, that is insane bro, nice write up ........



It may just be easier to strap some pots on them and have at it ........