Dear Customer,
Yes, when you install the evga 3090 FTW3 into Titan One case,
You need to use vertical support, such as our BP-VTS-PCIE4.
But that's a choice because someone maybe already has this support.
Since the 13th CPU is very hot, so it is better to add one more 240 or 360 radiator. You can add it to the side of the case.
Please send us an email if you want to see how to install another 360 radiator.
If you have any questions, feel free to contact us.
shopservice@bitspower.com.tw