3 fan GPU Support with two columns

I went down the rabbit hole of GPU supports, and found this video that describes the real problem with GPU sag-

TLDR - the problem with GPU sag is that the PCB board develops a twist over time, and the solder joints between the GPU and the board break. Ultimately the answer to me is that for a large 3 fan GPU installed in a tower, the support is needed at the end of the PCB. which is between the 2nd and 3rd fan. To avoid warping the PCB board I think both corners of the PCB board need support. So I designed this with two columns that support both sides of the card but allow air flow between them. 

(4) 6x3 mm magnets are needed, pressed into the bottom of the support. To figure out the proper height for the support I put the computer on its side so that the GPU card was in a neutral position. As the video describes I loosened the expansion slot screw and made sure the GPU card was not stressed at all. The model is 80 mm tall, and can be adjusted by scaling in the slicer if needed, and I also included the FreeCAD model. The four magnets do a good job of holding the support in place when the computer is moved, but two sided tape would be more secure.