GPU Stock Setting, GPU Temp, Fan question

[puremage111]

I am currently mining with
PowerColor Red Devil RX 470 x 5, 1 Faulty GPU where i didn't run previously

So, i was mining okayish until just now where i updated my Radeon until it couldn't detect my GPU.
Then i reinstall the existing driver to the old version but my setting just got messed up

I am currently running 6 GPU. 1 Fault GPU where it always crash

My previous setting was all good as the shopkeeper flashed and all could run 26-27 mh/s stable except for the 1 Faulty GPU.

Hence after all the driver reinstall, My MSI Burner setting got messed up! The current
Core Voltage and other Setting : Remain from where i set
Core clock : Drop to 600 Mhz

I wanted to set the Faulty GPU back to its clock setting so i can try to run without crashing it

1)Is there anywhere i could check the clock setting for this GPU?

2)Is running 6 Rx470 powerdraw 830W (from smartplug - from wall) good?

3)Is GPU Running at 75C, 50% Fan speed good? Or should i make the fan faster

Thanks