This little piece is the second iteration. I added a little more padding to the corners and truncated how far the overhang follows the curve of the block. This allowed for me to more easily heat-press the screw-inserts from the original GPU cooler and have better mounting clearances around the package. Mercifully the holes lined up properly and the inserted bits are holding up.
Speaking of, I did get it mounted:
Shiny! And kinda gross if you look at the tubes. Sorry!
A further-out shot, this shows just how little space this card takes! Also, many thanks to Josh for basically leaving this side empty.
Here you can see the very temporary setup. No water in it in this shot, but you'll note the mix of hard and soft-tube. I used what I had on-hand, don't judge
Here, leak testing. Small drip on that 90° fitting that's parallel to the table, caused by too much lateral pressure on it. I adjusted things and it's fine now.
If you're wondering, I put screws in the rad to act as feet here
Plenty of clearance.
Testing:
I used 3DMark's Skydiver benchmark, seeing as it's more in-line with what my card should be doing. I ran it three times on air and again on water, saving them each for comparison. Then I composited them together.
Air, consecutive runs.
Water, consecutive runs. Got tired of having to do two screencaps per result so I just changed the orientation for the last two captures.
I'm not sure if the loop really got saturated with heat by the end, but the score did drop off over time. I also don't know what ambient is, seeing as I don't have my temperature gun with me. I had a moderate overclock on the 750ti going, +150 on the core and +50 on the memory. I can get it to +250 on both while running the Heaven benchmark just fine, but EVE + Youtube resulted in some glitchiness so I took it down to +200. Seemed fine, and I've yet to see the loop go much further than 45° C, and just web browsing right now keeps it at 30.
I do have my concerns about the radiator being able to keep up once I have my CPU in the loop, but overall I think this is promising! Just need to shell out for more fittings and probably do a platform upgrade at some point.
Also, RIP mobile users like myself, most of those images are huge despite the low quality, and seeing as it's 4 AM here I'm too tired to fix that.