Somebody managed to chill their RTX 4090 to room temperature, and plans to check to the 5090 subsequent

A Chinese language tech creator named Electrolytic Sodium Carbonate (ESC) has designed a liquid-cooled PC system that, as an alternative of utilizing a typical PC-mounted radiator (that’s boring), is connected to a family air con unit. The system in query options an Intel Core i9-13900K and RTX 4090, paired with a 12,000 BTU air conditioner to supercharge cooling, which even underneath stress testing, retains the GPU working at simply 20 levels Celsius, which is round room temperature.

This isn’t the primary time ESC has give you a artistic approach to combine highly effective family air con items with private laptop programs. Beforehand, they constructed a “complete home” liquid cooling system that seems to have 5 loops out there for a number of PCs. That stated, ESC believes this air conditioner-based cooling venture is the “excellent companion” for an RTX 5090 system however is presently ready for a appropriate water block for his or her graphics card to start testing.

Loads greater than a 360mm cooler but additionally much more highly effective

The air con unit is the Xiaomi KFR-35GW, which boasts a quoted 12,000 BTU cooling capability and usually consumes round 1.2kW. Measuring 765 x 268 x 550mm, it is considerably bigger than the PC tower it is cooling – and far greater than a typical 360mm PC radiator. But it surely’s additionally way more highly effective, and we’ll get to that in a bit. The video additionally showcases the modification course of for the Xiaomi KFR-35GW, which primarily includes welding and pipe administration to combine the liquid cooler reservoir contained in the AC unit. And, in fact, to make it look the half, there are some Intel, NVIDIA, and AMD branding stickers on it as properly. With all that out of the way in which, the actual query is: how properly does it work?

After 40 minutes of hardcore stress testing utilizing common instruments like FurMark and the AIDA System Stability Take a look at, the CPU cores have been solely a few levels hotter than their preliminary temperatures in the beginning of the check. As for the GPU, ESC moved the AC unit open air, the place it might usually be put in, and earlier than testing, the GPU temperature was simply 2 levels Celsius, with a 12-degree Celsius hotspot. Working stress assessments once more noticed these temperatures rise to twenty and 36 levels Celsius, respectively. That’s about the identical, if not decrease, than a traditional PC’s idle temperatures.

The “excellent companion” for the RTX 5090

We all know that the RTX 5090 options an extremely excessive 575W TDP—that is 125W greater than the RTX 4090, which signifies that it should generate a variety of warmth. So as to add to that, lately printed evaluations point out that not solely will the RTX 5090 run scorching, however it’s going to additionally direct all that warmth straight towards the CPU socket, causing a significant rise in CPU temperatures.

So, it is no shock {that a} beefy cooling resolution is critical to maintain temperatures in verify, and this air con unit appears to do the job. In fact, not everybody can simply DIY a spare air conditioner into the world’s greatest liquid cooler, however for many who can, it is each a artistic and purposeful approach to cool a PC. ESC even mentions within the video that this setup is not simply prepared for an RTX 5090, it is ready for an RTX 6090 as properly.