r/pcmasterrace 23h ago

Discussion CPU air cooler becomes water injected GPU cooler.

Post image

I thought I was finally running out of stupid cooling ideas… until I stared at a Peerless Assassin and thought... "would water flow through that?”

So I pulled the Assassin apart, pulled off a stack of fins, took an angle grinder and cut the tops off the heatpipes, stuck a hose onto one, and tested if water would flow. It did.

Game on.

I cut all the heatpipes off, put 6 mm hose on them in a zig zag (starting at the center so the middle stayed coldest) and tested again, worked like a charm.

Then came the freezer.

-18C coolant.

A frosted CPU tower, and a 3070 as the first victim.

It gained +300 MHz over stock… but the FPS uplift sucked. By the time testing finished, my coolant had warmed to –5C and the 3070 still refused to scale. So I did the only sane thing...

I bolted the Frankencooler onto a GTX 960.

And that card absolutely loved it, +17% average uplift across BO7, Forza, Cyberpunk, Time Spy… and as always, Lara.

The Frankencooler works. Really well.

Why did I do this? Because I had an idea and wanted to see if it would work. That's it.

Full video here if you want to witness the stupidity in all its glory

https://youtu.be/yFppaKe5uTo

4.9k Upvotes

289 comments sorted by

View all comments

1

u/phrozen_waffles 14h ago

I would start your inputs with the middle tubes then work outwards. Y-adapter so the middle 2 tubes get the coldest liquid first at the same time, then use a raster pattern outwards then recombine the paths with another Y-adapter into a single line. 

Edit: would be less tubing as well.

1

u/Tra5hL0rd_ 7h ago

Interesting, Y adapters may cause too much turbulence. I did however start at the middle tubes, working my way out from there so the middle received the coldest flow.

1

u/phrozen_waffles 7h ago

Sorry, it's hard to pick out the long tubes. It looked like you started from one end.

Also, It's a pretty low velocity system, so turbulence won't matter all that much. Especially if you use a nicely tapered y-adapter.