I've now seen three different AIB manufacturer's (leaked) thermal solutions for the upcoming RTX 4090 - and I'm generally worried for anyone purchasing these behemoths. The super large fin stack, vapor chamber, and triple fan designs are now pushing the thermal solution to 3-4 slots deep! That's a Hell of a lot of weight for standing desktop cases where the GPU will be constantly bending downward and flexing the PCB due to gravity.
Although GPU slot designs for more expensive motherboards have gotten better, I still wouldn't make my case and slot hold that much weight for years on end. You also run the real risk of GPU PCB flex causing some contact surface movement of the cooling solution TIM against cores, memory, and VRMs, exacerbating the potential for cooling issues.
If you do get the RTX 4090, do yourself a favor and get a GPU support bracket as well.
Although GPU slot designs for more expensive motherboards have gotten better, I still wouldn't make my case and slot hold that much weight for years on end. You also run the real risk of GPU PCB flex causing some contact surface movement of the cooling solution TIM against cores, memory, and VRMs, exacerbating the potential for cooling issues.
If you do get the RTX 4090, do yourself a favor and get a GPU support bracket as well.
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