Cleaning will be done. But if the temperatures are OK, why should I renew the thermal paste for it? I didn't know GPU's had thermal paste too (only CPU ). I'm not sure, but since those 2 GPU's are on top of each other (real close, I can't put any finger between them ) I think the GPU beneath is covered with a pile of dust. I'm just not so sure what GPU is getting used right now and which one is getting warmer in HWMonitor. And yes, I slap that fat bitch, but it won't listen.