Hi guys, been lurking a while thought id bite the bullet and join. I have been mining since November 2017 - so still new to the game.
I have 2 mining rigs 1 is 4x 1080TI (was gaming Rig - was going to expand but prices gone mad!) and 2nd rig is 5x Asus 570 Expeditions OC 4gb + 2 x Nvidia 1080.
For now im just using nicehash to Mine.
Problem i have is 2 of the Asus 570's seem to be locked to default bios/clocks.
2 of the other 3 i have used annoraks OC custom rom and now get 29MH for about 95W
1 Card i have used the 1 click bios (think the trimmings are too tight for the OC rom) and get 28MH
But the other 2 cards, no matter how little a change 1MHz in Mem frequency or 1 Mhz in GOU frequency in Bios the card fails in the miner i get a driver stuck in thread then BSOD.
Also Card 0 which is running at 28MH in the miner application (claymore 10.8 i believe? using Nicehash legacy 1.8.
![Cool](https://bitcointalk.org/Smileys/default/cool.gif)
it shows as 28MH but it will then drop to 5MH or 6MH and will also drop speed on the 2nd algo from 850 down to 150. I have tried with stock rom, modded rom, no OC but the result is the same - is that a problem with the card or is the mining software reporting the rate wrong? Just concerned over a minute it does it maybe 10-15 times? over the course of the day that's a decent drop in speed! - I have already swapped out riser and cables.
Currently all the AMD cards give a combined rate when duel mining eth & decred of 130 which is ok but knowing that it could be 145-150 is bugging me!
In GPU-z every single card shows the same memory same version same everything there is no difference shown at all - checked line for line.
Any help appreciated - have posted on many forums with no luck
![Sad](https://bitcointalk.org/Smileys/default/sad.gif)
Thanks in advance
Gaz