Will this help with hotspot? Because my vrm temps are sitting between 65-70c. Thanks for advice i will try it tomorrow when my new pads will arrive.
Not sure if that will help hotspot as that is on the GPU core itself. But what I am pointing out is air will not be so trapped throughout the card. The hot air now has an easier escape path in many areas. You still have maximum heat transfer as the heat is traveling in the Z plane, ie between hot device & cooling plate.
If you look at the thermal pad on your heatsink you can see a gap in the centre where the thermal pad is doing nothing.
Yes it's in contact with the heatsink, but it's not in contact with anything hot. so it's not cooling anything.
So what is happening here, the heatsink itself can't do a good job in releasing heat as it's trapped by the pad in that small patch of the heatsink which acts more like a blanket. ...With a gap in the thermal pad the heatsink can do a better job in releasing heat into the air & I'm only talking about that small patch on the heatsink.
When fitting new thermal pads you need to cut them to size & fit them on the hot component themselves, ie Inductor & MOSFET. You must cover the complete hot device to get maximum heat transfer in the Z plane. The closer, smaller the pad while covering the complete hot device the better. A few millimetres extra over the hot device is what I have, around one to two millimetres.
WARNING: You have to be careful when assembling the card back together as any disturbance of the pad when assembling the card back together will result in pads getting pushed off the hot component which will result in higher temperature. You need to be fairly skilled in this area as you must not disturb the pads other than the coldplate being directly dropped on top of the pads.
EDIT UPDATE IMPORTANT: Your thermal pads on the MOSFETS are correct do not change this. This is my error as I got a little mixed up between my two cards & yours. Fit the thermal pads on the raised bump on the heatsink as shown in your second photo.. in other words do not change anything here, my mistake.
2ND EDIT:
Here is how the thermal pads are fitter to a Vega Nano Card. I Can't take the card further apart due to the type of thermal pads this card is using, It's permanent. Internal cooling plate can never be removed, it will destroy the Thermal pads. Look carefully how the pads are cut & note the exposed inductors are not covered with thermal pads as this area is not in contact the cooling plate.
Photo1
Photo2