It's going to depend on the thermal pads you use and how much they compress by. I purchased a bunch of gelid ultimates and replaced my pads a couple days ago. Front vram is 2.5(2.25 is what the stock pads are I am pretty sure). Inductors I used 1mm. Mosfets(vrm modules) were 3mm. Backside vram i used 2.5 as well, you could probably get away with 2mm. Unfortunately I had a negligible memtemp difference of -2c while my gpu and hotspot temp skyrocketed to 10c+. I opened up my gpu again and spread the thermal paste on the gpu die around and it brought down the gpu/hotspot temp a few degrees but it was still 5c higher for gpu than stock and 10c higher for hotspot. I noticed one side of the inductors and mosfets did not have good contact when i opened up my gpu so I am going to try and get .5mm pads to stack on top of the pads that are already there. I do believe that the gpu die is not making enough contact with the heatsink though but in order to fix that I would have to shorten the pads that are making decent contact already. It has been a painful experience. gl if you attempt to try it.