so, tried different tweaks to the OC, and system failed to recognized the card until this morning with the original OC settings…happy ending story? no at all
The RX6800 cards are crap to mine with. I had two that I switched from Hiveos to W10, but no difference. One card ended up crashing completely, never to start up again. The other one is hit and miss if it is recognised when starting Windows.
I even switched motherboards from an Asrock B450 to a BTC110. No difference. The three 6700XT’s on the same rig run flawlessly. I will never buy another RX6800.
not happy, but the fact that 1 Bios mode work and the other one doesn’t mmmmmmmmmm something went tits up when i tried to download the driver or something, i know it doesn’t make sense but try to hear me out:
receive the card, plug in it, card not recognized, find the Hiveon guide how to update the driver on hiveos, selected the last driver available, boom, all good, overclocked the card, 61 m/s 110-120 watt, running along another LHR card, Nbminer, not too shabby.
decided to add 3 more card to the rig, nvidia non LHR, driver problems started, try different things like plug the card alone directly on the motherboard, switch the pcie ports to Gen2, enable 4g on the MOBO, starting to dig into BIOS and stuff like this(no flashing).
take Grea advice, removed the card from the rig and run it in win10.
things that i have noticed:
the fan of this card don’t spin until is too late i think, the card turns extremely hot and i think that could be a reason for the crashes so if someone knows how to change this at the root and not through a OC software i would highly appreciate it.
the bios switch part, it seems that the OC Bios is the problem, how do i bring back as the begin?
thanks all for your feedback, this crying noob miner higly appreciate
my problem as soon i put OC on the core and memory i have the crash(usually), is it possible that i crash because the system for mining is actually using a lot of core and voltage?
i mean, my goal is to have less power consumption now, so my main focus is to low the usage of the core and the voltage as a consequence of less utilisation of card’s parts. But, is it possible that, by lowering the core, which is used now a stupid speed this will cause the crash?
If I remember correctly, you should be under clocking the core in Windows and maxing out the memory freq. Not sure if current Radeon drivers make a difference, all my 6800’s are in Hive since the f-state scripts were put out there this summer.
In radeon software try
1100min-1200max Core
2148-2150 Memory
Should be able to back core voltage under 793mV
I’d leave the fans max if there is any suspected cooling.
Save to Radeon Profile at each stage that is stable as you work toward it.
You should be able to load a fresh BIOS in that slot from Hive or Windows with the right settings/tools.
ok, after running all morning i came back from lunch and i had the iconic “green screen” of death, everything still running apparentely but obviously i rebooted, windows start and display available.
quick update, RMA raised and card “repaired” by Gigabyte, well not sure why but the card still no working well when overclocked, BUT, if mining without OC these are the results: 58MH at 129W.
not sure what to think at this point, it may worth says that this is a OC card version so maaaaaaaaaaaybe is already overclocked and doesn’t need additional overclocking
I DON’T KNOW.
A card that says its OC version it either means it clocks higher than the same card non-oc, or just higher than reference. What we actually do for mining is the oposite of overclock, we underclock and undervolt cards. The underclock should nlt.make the card crash, but the undervolt might do so. Try one setting at a time, starting with fan speed, then memory speed (that you overclock) then core clock, then if all works well, mingle with the voltages