Just want to start out by saying that I very new to mining and I appreciate any help I can get! I have this card in an old HP Z400 I picked up off eBay for $100 just for testing purposes. Once I get everything optimized I'll move it to a mining rig.
This card is giving me so much grief. Even at stock with the latest driver if I have the card plugged into the monitor it will eventually crash while mining. It does ~24mh/s at stock.
If I install a second GPU just for the monitor, then this card works just fine. Had it going for 48+hours without issues. Does anyone have experience with that?
So, after I got it running as a secondary GPU, I decided to do some testing. I installed probably 20+ different ROMS, none of which worked.
I've tried the 30Mh, 32, and the low power ROMS here:
https://bitcointalk.org/index.php?topic=1584617
The first problem is that they were all 512kb, where my bios is only 256kb. My fix was to use polaris bios editor and copy the exact voltage, clock, and memory timings into a duplicate copy of my stock bios. None of these worked and windows just eventually crashed.
I've tried the ROMs posted here:
http://1stminingrig.com/best-bios-rom-sapphire-nitro-rx-480-8gb-oc-mine-ethereum-30-mhs/
I've tried pretty much all of the ROMs created by boysie
https://forum.ethereum.org/profile/discussions/17803/boysie
There are also some ROMs posted at anorak.tech that I've tried that were specifically for this card:
https://anorak.tech/t/anoraks-vbios-collection-optimized-settings-for-performance-power-saving/13/3
Flashing back to stock I am able to get 24mh/s without issues.
I gave up on ROMs I found online and just started tinkering with my own. I made a small breakthrough by just copying the 1750 timings to 2000 using polaris bios editor. This allowed me to get ~28mh/s, stable so far a few hours. Any tips on trying to get this higher? My goal is 30mh/s and underclock/undervolt to save on power.
Also, I'm trying both Wattman and WattTool to play with settings, but both tools don't seem to consistently actually make the changes they say they are making. Is there another tool that would work better?
Drivers are 16.10.1
Here is the GPU-Z:
[IMG]http://gpuz.techpowerup.com/17/04/18/bj6.png[/IMG]
This card is giving me so much grief. Even at stock with the latest driver if I have the card plugged into the monitor it will eventually crash while mining. It does ~24mh/s at stock.
If I install a second GPU just for the monitor, then this card works just fine. Had it going for 48+hours without issues. Does anyone have experience with that?
So, after I got it running as a secondary GPU, I decided to do some testing. I installed probably 20+ different ROMS, none of which worked.
I've tried the 30Mh, 32, and the low power ROMS here:
https://bitcointalk.org/index.php?topic=1584617
The first problem is that they were all 512kb, where my bios is only 256kb. My fix was to use polaris bios editor and copy the exact voltage, clock, and memory timings into a duplicate copy of my stock bios. None of these worked and windows just eventually crashed.
I've tried the ROMs posted here:
http://1stminingrig.com/best-bios-rom-sapphire-nitro-rx-480-8gb-oc-mine-ethereum-30-mhs/
I've tried pretty much all of the ROMs created by boysie
https://forum.ethereum.org/profile/discussions/17803/boysie
There are also some ROMs posted at anorak.tech that I've tried that were specifically for this card:
https://anorak.tech/t/anoraks-vbios-collection-optimized-settings-for-performance-power-saving/13/3
Flashing back to stock I am able to get 24mh/s without issues.
I gave up on ROMs I found online and just started tinkering with my own. I made a small breakthrough by just copying the 1750 timings to 2000 using polaris bios editor. This allowed me to get ~28mh/s, stable so far a few hours. Any tips on trying to get this higher? My goal is 30mh/s and underclock/undervolt to save on power.
Also, I'm trying both Wattman and WattTool to play with settings, but both tools don't seem to consistently actually make the changes they say they are making. Is there another tool that would work better?
Drivers are 16.10.1
Here is the GPU-Z:
[IMG]http://gpuz.techpowerup.com/17/04/18/bj6.png[/IMG]