thanks. i believe that in my case there is some play on bios pci settings.
i was able to change from 30/GPU to 35/GPU on MSI RX 470 4gb (essentially similar to your reference of 36) by just changing bios settings and instances setting (to default)
second interesting point is that my Asus r7 370 4gb only do 22.4s/GPU, athough I am using older AMD SDK and older fglrx. I will update them later tonight.
installed this in manjaro arch and it worked, sees by 2 GPUs
but then i get this error, yet the file is there…
/usr/bin/sa-solver: /opt/cuda/lib64/libOpenCL.so.1: no version information available (required by /usr/bin/sa-solver)
???
I seem to be getting around 260-270 sol/s with 6xR470’s with modded bios.
Very happy with it now I’ve got it working on linux 
I’m using an ASRock B85 Anniversary motherboard, 6x USB risers, 8gb ram, Celeron G1840 CPU, and 6 x 4GB RX470 Nitro’s.
Thanks again to cryptomined for the tutorials on youtube, and the tutorial to flash the bios, also thanks to mrb for the great miner!
try --instances=3 (20char)
your welcome, I’m glade it helped you, and thanks for pointing out the blake2 stuff the other day. 
trying to learn more about the recent optimizations and installing on a ubuntu NVidia rig now to try out
almost at 1000 subs in about a month - that is pretty cool
I will probably re-upload the ubuntu how to install video as I think i messed up on some text
Is it stable? How to auto start and restart if gpu get problem or PC hang?
It’s fairly stable, I keep checking it couple of times a day.
Had a gpu stick at 0.0 sols/s and when I ctrl+c the whole thing crashed, so had to hard reset it. Part from that seems ok.
I posted stuff above to handle hung GPUs.
You are assuming too much, I have the card let’s leave it at that. I posted abut what to acquire next…I’ve got a chance to add two more cards in the 6800K box.
Thanks for posting the YT user name. Will check out the RX470 today at the shop.
What’s the CPU usage like on this miner with the (6) R470?
great videos
i was looking for bios mod to do on ubuntu but seem to can not find any.
Do i really have to mod the bios on a windows machine?
Yes, unfortunately, Windows is it for VBIOS mods.
thanks for the answer
guess i have to dig up a windows machine from somewhere that i can use
TOTALLY OT: Trump is leading, Asian markets are down … BTC up. Hmmm … Heaven help us all!
all markets are down
they know they wont be able to buy Trump and looks like he will really win
DOW has been tanking
yes you will need to do it in windows… sorry about that…
Modded Bios? I am having the same issues with the same card 8GB.
Any help would be much appreciated.
Thanks
check out cryptomined vids on youtube
I did, but thats all for 4GB cards the 470…I need to mod the 8GB version…
Anyone?
Hi, I’m trying to install, but after installing AMDGPU-PRO Driver and then reboot, the following screen shows and Ubuntu can’t start.
/dev/sda5:clean,121507/2411920 files,813696/11638400 blocks
I also tried changing the graphic preference from CPU to PCIe on BIOS, but nothing changed.
