I want to purchase the ECX-800 chiller to use for benching. I am thinking that the chiller alone would not give the results I am looking for. Condensation will happen quickly where I live given the dew points and temps and I doubt I would see much difference in clocks at those temps. I was looking up walk in freezers trying to get an idea or two of how I could run the chiller at max low. Would using a lab freezer at -30 to -85C with the chiller work for getting negative GPU temps? I know the limitations of using a freezer for pc cooling. The chiller and pc would be running 2-4hrs a day and I think it would remove most all of the heat. Any ideas on this and how to get the GPU to sub-zeros?

They are in stock finally and I almost pulled the trigger last night. Looking at TiN's chart for the KP, I believe that I need to get near 0C for this card. I am not specifically looking for -30 but was wondering what could I expect GPU temps to be under load with the chiller at max vs 10C and would a really cold freezer allow me not to worry about over cycling it using a chiller. Would it even make a difference vs chiller alone? Searching for 2250 stable.
 
 
edit: Yes, that would do it.

Then the Race Is On
Well as soon as we get our EVGA Hydro Copper Waterblock for EVGA GeForce RTX 2080 Ti K|NGP|N, 400-HC-1589-B1 Installed.
I am going to test run the Chiller on my GTX 1080 Ti K|NGP|N SLI setup and then on my RTX 2080 Ti FTW3 HC Cards First.
Temperature options: liquid set-point (1 to 50°C), external thermocouple set-point (1 to 149°C), liquid and ambient delta-T (-50 to 50°C),
external thermocouple and ambient delta-T (-50 to 50°C); toggle °C/°F https://koolance.com/exc-800-portable-800W-recirculating-chiller
Manual - manual_exc-800_d100eng.pdf

Cool GTX

Construct a small dedicated room or space in an existing area - Not on an outside wall.  Spray foam for Max R-value on All 6 sides & use a Ductless A/C unit
 
 
The Cold room will have a much lower dew point 

Would I be able to override the thermostat without the compressor freezing up with the ductless ac? I know they get really cold. 

Ohh yeah. I figured being they stocked them last night. I screwed around today reading about freezers.

What about using a subzero chiller?
I saw the video posted on Youtube with that guy using the EXC-800 and also a pc cooler, whatever that was, and his 4 cards were still in the 40's.
What is the lowest temp that I can recirculate through the lines?
 
 
Worth? If it was 250USD, would it then be worth it? It doesn,t require rads or pumps.

There was a guy on xtremecooling board that made custom phase change units.  It was the same time frame when I was using the Asetek Vaporchill.  LDcooling has their cpu phase change, but didn't see anything for gpu.  Years back, I do recall seeing GPU adapter for phase change.  It'll run <40c at idle, at least mine did.  Asetek included the pot housing that included a heater.  The MB backplate had neoprene with a heating element, too.  I used electronic conformal spray to coat the MB contacts.  Dielectric grease on the cpu side.  Now, everyone just uses vasaline.  My system ran for days straight without problems.  Some things work well under extreme cold, other parts don't like it.  Not sure how effective sticking the entire unit in freezer will work.  Only limiting factor is money and time.  Labs typically uses -40 & -80 freezers, but they are $$$$.

Going to take down my X299 FTW K MB CPU and Block it all out and put my KP card in with the HC Block and see just how far I can go with it.
View System
 

To Run All The Way, Yes. Most likely Velcro® Brand Cable Ties.
The Tubes are cover with Armaflex 1/2 in. x 6 ft. Rubber Self-Seal Pipe Wrap Insulation

https://www.homedepot.com/p/Armaflex-1-2-in-x-6-ft-Rubber-Self-Seal-Pipe-Wrap-Insulation-HST05812/100550644
 

Now for the Real Thing

 
Reviewing
https://www.youtube.com/watch?v=4d0B0Dli-1g
 
http://www.ldcooling.com/shop/14-phase-change

The Dude has 2 or 3 Videos now, I know I watched 2 of them.

Or One of Each
 $1,699.99 EXC-800 Portable 800W Recirculating Liquid Chiller   Part No.  EXC-800
$1,499.99 EXC-450 Portable 450W Recirculating Liquid Chiller (Ultra Compact)   Part No.  EXC-450 + DC Power Supply for 24V Systems $89.99
 

Let's hope yours is not DOA like mine was.

Koolance said they had a bad batch and sent them all back.  AMEX covers used equipment?
 
I've been looking at the Alphacool XT45 420 V.2.  It has more surface area than a 480 and I like the design.  Then I had an idea.  I'm considering the EXC again, but need to vett the operations.  I could route the EXC output into the 420 and use that as a makeshift coolant temp regulator.  It would provide cooler ambient air intake for the case, while balancing off any excessively cold coolant.  I'd like to the run liquid temps at 20-23C.  Compressor may cycle on less frequently.  Unsure how the system maintains precise coolant temp without reheat when there is dynamic heat loads from the cpu/gpu.  This would occur during office productivity, web browsing, or system at idle.  Assuming it works using a traditional design, as temps rises, it cycles.  The exc-800 larger tank capacity should help.
 
Thoughts?

808sting
Koolance said they had a bad batch and sent them all back.  AMEX covers used equipment?
 

I would have the two year warranty buying the Koolance new with the AMEX. Instead I bought a new unopened box from an ebay member.
Ummm...any Idea what batch that was sent back???
 
I have no knowledge of how this thing works. I have a general idea but none about the thermal control and speed of the flow. I am hoping for the good grace of bcav and his extensive knowledge of everything mechanical to lend a hand.