I know the intent, but I'm not looking at sub freezing temps.  I called Koolance again and spoke to a tech this time around.  (only sales available the last time)  I feel more comfortable with the EXC now.
 
-  EXC-800 uses a linear piston compressor running 100% (constant on),  power load is constant since EXC-800 compressor is always on, whether cooling or not.
-  Piston compressor is quieter than scroll.
-  Solenoid starts/stops refrigerant as needed, thus +/- 1C under heat load
-  heat load can be as minimal as 50w and still maintain temp.  No load will affect temp regulation tolerances depending on ambient.
-  EXC-800 larger reservoir size helps maintain constant temps as compared to smaller unit EXC-450
-  EXC-450 uses a standard DC scroll type compressor that cycles on/off, but has the in-rush for load/noise, too.
-  no humidity sensor so you will need to factor in condensation and settings based on your environment
 
 
You could use the EXC with radiator, but it is unconventional for traditional PC extreme overclocking.  By running it through a rad, it would be similar to a commercial chill water HVAC, but running inefficiently to prevent condensation.  I probably won't need it if I keep coolant temps at 20-24C.  Outside may hit 100% humidity, but inside should be mid 40% with AC on or 60-90% without AC.
 
How do I hide this big black box with lights from wife...  Was going to make a custom loop, but build cost already approaching $700.
 
@bcavnaugh, got the system running?  Working well?

Can't wait to see your results.
 
Intel only announced the 9900ks so I may hold off on the EXC until the new HEDT's are launched.  At least Koolance is made in Korea so not affected as much as China made stuff.  I may get a 1600w PS and use my 1200 as spare for my future VR build.  Waiting for Valve Index.  In the meantime, the KP is a very nice card to use.

Great...I bought this KF  and there is a new 9900 on the way. I was guessing the successor would come in Oct. 

@bcav     You got yours up and running, yet?

I heard background  ambient sound on the youtube review.  Is it as loud as it seems?  Koolance said the 800's compressor never shuts off, only solenoid closes valve to stop cooling.  EXC-450 PS may be louder and more annoying than the main unit while compressor is cycling.  Not sure if it's the cooling fans and/or compressor noise.

Ya we can't wait either!!! want links, pics, ect...
 

Nice
 
What MHz improvements have you seen with those chilled temps compared to just ambient water loop?

Very nice. Looks really slick. I found with my KPE that once the liquid temps got down to ~0.5c I was able to hit 2235 in timespy and 2250 in firestrike, portroyal ect...

@bcavnaugh
Nice setup for dedicated benching.  EXC probably won't work since I want a "do-everything" setup.  I think I'm committing to the ERM-3K3UC and may add an aqua chiller on the outlet later.  I can run the chiller as needed, but mostly it'll be an inline reservoir.  Not the most efficient, but similar to what Vile does.  The Koolance ERM let's me be case independent and turn-key.
 
Your next investment is a dehumidifier and double-conversion UPS?

Setting the chiller on “LIQAMB” with a minimum value of 0°C (which keeps liquid at ambient)."
Really works well, I am Folding @2055MHz and GPU Temperatures are running @ 34/35°C AMB @ 24°C Water @ 24°C
Now running @ LIQAM -5°C GPU Temperatures 33/34°C

I ordered my fittings and koolant and e everything needed to run on Thursday w FedEx next day. My order shipped yesterday at 5:30p Pacific. The good ole pay for next day and receive it on Monday. Good news is it’s on the way.

Does the Hybrid cooler use 1/4 bspt? I have an AlphaCool Eisbauer Extreme I’d like to test.

xMAXxIMUSx
Anyone have one they wanna sell to a overheated Canadian?

See --> Ultimate Self-Starter Thread For New Members  - 17. How to Apply for the EVGA Marketplace
 
All Want to Buy (WTB) & For Sale (FS)  ---> Must be in that section per EVGA Forums TOS
 
FYI: it takes Time to get added to the Marketplace access list & EVGA will be slammed post Holiday