Dropped the memory temp on my watercooled 3080 from 106c to 72c by changing the pads on front and back then adding small heatsinks to the backplate. This is with memory at 21000mhz, core at 1350mhz, voltage at 737mv and power at 70%. Averaging around 95MH/s while mining now. When gaming memory sits around 50c and core around 38c at 1850mhz core and 21000mhz memory. Here's my mining temps after around 4 hours.