I feel like every electronics manufacturer is skimping on thermal paste for some reason. Doesn't make much sense, you're just knee-capping the performance of your expensive products for the sake of fractions of a penny.
the performance in the short term doesnt change much. its long term that does, and theyd rather you upgrade your gpu rather than use your current one indefinitely.
I've had very good results with PTM7950 phase change material on my CPU, which has not been delidded. I expect it would work even better on a GPU, which typically doesn't have a lid.
(Note that PTM7950 is somewhat difficult to apply, since it comes in a pad-like form that is both sticky and brittle. If you decide to try it, I recommend refrigerating it first, and being careful and patient when applying. I feel it was worth the effort.)
Really interested in trying PTM on my graphics card, but it's still too expensive. You need several sheets to cool all the components and Thermal Grizzly is the only brand I can get a hold of.
It's cool (hehe) that it's even available at regular computer retailers though.
How about using one sheet for the GPU itself, and less expensive thermal pads for the memory chips and/or voltage regulators? I think AIB designers often use this approach.