Ninjastic
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Board Mining (Altcoins)
Re: 6900xt overclocking
by
Hotdog Vendor
on 22/05/2021, 11:34:17 UTC
Same here the 6800xt is for my gaming pc, mines when im not gaming. Have a rig of 4x 3070s mining all the time.
Waiting on another riser so i can take 1070 out of another pc.
Never even bothered trying to game on the 3070s the 6800xt is much better for most games running 165htz monitor at 1440p.

Not sure how much you pay for power but i pay us$0.28 per kw so doing the bios mod was worth it, also runs 5c cooler with less fan.
heres quote from another thread I was getting higher mh/s then.
Quote from: Hotdog Vendor on May 12, 2021, 01:43:09 PM
I have a 6800xt so 6900xt should be pretty much the same.

You want to make a mining profile in the driver tuning just for mining.
With 6800xt i get 64.5-64.6mh/s.
I have core set to 1219 (actually runs 1200 or 1205).
Voltage 625mV (I will explain how lower)
Fast timing on, 2150mhz speed (actually runs 2138mhz). Some people have to select 2140 i think.
Uses 137w in miner software. Undervolt made it run 5c cooler too.

To change volts i used this video https://www.youtube.com/watch?v=N07GTV06_-Q
Original bios file from here https://www.techpowerup.com/vgabios/?architecture=AMD&manufacturer=Sapphire&model=RX+6800+XT&interface=&memType=&memSize=&since=
Morepowertools here https://www.igorslab.de/en/red-bios-editor-and-morepowertool-adjust-and-optimize-your-vbios-and-even-more-stable-overclocking-navi-unlimited/3/

Re: 3090, if your just using it for mining then maybe 2x 3070 is better option. There are other threads here discussing this, seems most prefer 2x 3070.