For the backplate side, yes- I reused the original thermal pads/putty as-is, no cleaning or anything, just simply put it back the way it was. It was a bit cracked up from removal and I fully expect that it's not performing 100% as a result but it's still running "middle of the pack" temperatures anyways, so probably <90% at least. That said, I plan on replacing it soon.
Everything else had new pads supplied, which I used. I'm meticulous about cleaning everything down to be spotless, using 99.99% electronics grade alcohol, lint-free 'Kim Wipes' and lots of patience.
Overall, I'm super happy with the GPU cooling, as always with EVGA.