Due to the Older hardware I would recommend a radeon HD 5450 20W low profile card. [URL]   [URL]   Current versions of this card do not come with low profile brackets. [URL]  
my son has an optiplex 360 and he wants to upgrade the graphics card.  The one we got is NVIDIA GEFORCE GTX 1660ti. It's too tall for the unit.  Can we get a riser board to be able to use this card? Or should we just get a low profile graphics card? 
Upgrade optiplex 360 graphics card