It does not get faster than this. In this video I build the most overkill, dense little gaming PC I’ve ever put together: a Formd T1 with a Ryzen 9800X3D and an RTX 5090. I’ll be honest—at the start I wasn’t even sure it would work in a case this compact, but the temps ended up so good that I’m genuinely planning to make this my new main gaming and editing machine. It’s not a simple build though, and I had to do a bunch of weird, unexpected stuff to make the hardware actually fit and behave. I walk through the exact parts and the compromises: the MSI B650i Edge (because the low-profile VRM heatsinks actually matter here), a Black Ridge cooler right at the 47mm limit, and even removing RAM heat spreaders to stay under 33mm height. I also had to swap the AM5 backplate to a shorter Thermal Grizzly one, and remove the primary M.2 heatsink to clear everything. On the GPU side, the T1’s riser offset is the whole reason this works—otherwise you’re just trapping heat. Then I get into the real takeaway: Gen5 GPU + Gen4 riser needs a BIOS tweak (force Gen4), and undervolting the 5090 via a simple power limit + core OC is basically free efficiency. In Cyberpunk I dropped around 80W and about 7°C with barely any performance loss, and the whole system ends up cooler, quieter, and way more practical than it has any right to be.