I have one machine with a blade running 4 degrees cooler than the other. I just opened it up and found that the outside heatsinks were a little on the loose side. When I probed the r47s and the black chips above them, I found the temps to be between 90F - 102F on the R47s and 93F to 111F on the black chips. I'll be trying heatsinks before too long.
Temps were coolest near the intake and warmest in the middle of the unit.
someone had posted before that little black chips above R47 are actual dc-dc converter chips.
are you planning to put small heat sinks on them?
This has proven to have no effect on hashrate. Multiple members, including myself, have attempted this in misguided attempts to address the issue.