Just wondering if there are any owners of the 390 that were successful in achieving efficiencies greater than 7W/MHS?
Going mostly by
https://bitcointalk.org/index.php?topic=1465128.0I managed to get 7.2W/MHS with my ASUS R9 390 STRIX at (1.03Volts - shown in GPU-z/MSI Afterburner) @ 1050/1500.
Going any higher on clockrate or lower on voltage freezes the system. So just wondering what combination everyone is using.
This is ETH solo. Not dual. This was done with a BIOS flash of a editted ROM file in HawaiiBiosReader and not in the MSI Afterburner software.
Would be nice to get 6W/MHS and I can get a bunch of these instead of the 470/480 since they are cheaper and hash faster.
Comments
Upon further tests I got
28.5MH/s using 190watts running at 1000/1500 using 0.984Volts
So 6.66W/MHS.
Probably won't get any more efficient then this.
The best I could get was this
27.1MH/s using 170watts running at 950/1500 using 0.938V
So about ~ 6.3W/MHS.
Here a pic of my asic quality for my asus
Here a pic of my bios
As you can see it is way undervolted. I had to add mV to it in AB to get the gpu to work.
on my stock MSI 390, -96mV, I could push 1040 core and 1125 mem to give me 30MHs per card.
but I still can't get to go under 1600w with 6 x GPU.
the 390s are very forgiving in under and over clocking -- but lousy in power consumption.
It is, however, the most powerful and stable card I have in my small ETH farm.
how I wish we have a card that is as powerful as 390 but using only Nano or RX480 power
Looks like our cards are almost identical. Even the ASIC quality is exactly the same.
How stable has this been for you? Did downclocking the memory to 1300 actually do anything?
My HawaiiBiosReader is set to 1000 instead of 1050 and I'm running currently at 950/1500. Seems stable so far.
Thanks in advance.
Everything is now running on Linux atm.
What i'v seem so far is that there are 2 dif. kind of chipsets on the card (shows up when flashing).
Here is the voltage list.
However, I'm not able to translate these afterburner settings into all the boxes in Hawaiibiosreader to make a usable rom. Can one of you advanced bios gurus kindly explain to us which boxes these numbers translate into so we can fixate these settings in an Ubuntu environment, please? Thank you in advance.