Ethereum GPU mining?

[Erenhardt]

After some testing I have to say it is very unstable.

 

[ozzy702]

After some testing I have to say it is very unstable.

This is what I've observed as well. I rolled back. One box started reporting over 2X the hash rate but was actually doing about 75% of the normal hash rate. It's buggy for sure.

 

[Madpacket]

Hi all, need some help with mining.

I have a Powercolor RX480 (ref), which I`m very happy with, mining at ~26-27Mhs, but saw a post somewhere about dual mining with an apu to squeeze a couple more Mhs out.
What I would like to know is how do I go about setting up the dual graphics mining.

Thanks in advance.

The GPU only portion of a 7850K APU uses like 20W while mining, probably less for 384 SP parts. Probably not really worth the extra 2-3Mh but if you only have a few rigs I would leave it enabled. Just make sure allocate at least 2GB or it'll fail on DAG creation. Something to consider as well is to push a 480 past 27Mh you really need to up the voltage which is where those extra 2 - 3 Mh could come in handy from the APU and where the extra wattage may be worth it.

 

[n0x1ous]

Just got a 6x RX 480 unit up and running last night. Thanks to @Madpacket and @poofyhairguy for the suggestions on hardware etc. Had issues getting it to boot properly with more than 4 cards initially. Went through all the usual troubleshooting recommended for the H97 anniversary with risers and 6 cards and wasn't having any luck. Finally it dawned on me that I installed Win10 in legacy mode and not UEFI. Reinstalled with UEFI and everything works perfect.

I started low with underclocking and undervolting and got some bsod's and finally got to stability at 1100/2200 975mv on all 6 cards = 27mh/s on each card. Pulling 950w from the wall according to kill-o-watt (EVGA 1300 G2).

A final interesting note and question. For the first time I got a payout from my pool (dwarfpool) and it not show up in my wallet. Normally its like a minute before it shows up. Its been 6 hours and it still isnt there. The transaction shows up on etherchain so not sure whats going on at this point. The wallet is @ coinbase......anyone else have anything like that happen before?

 

[Erenhardt]

Just got a 6x RX 480 unit up and running last night. Thanks to @Madpacket and @poofyhairguy for the suggestions on hardware etc. Had issues getting it to boot properly with more than 4 cards initially. Went through all the usual troubleshooting recommended for the H97 anniversary with risers and 6 cards and wasn't having any luck. Finally it dawned on me that I installed Win10 in legacy mode and not UEFI. Reinstalled with UEFI and everything works perfect.

I started low with underclocking and undervolting and got some bsod's and finally got to stability at 1100/2200 975mv on all 6 cards = 27mh/s on each card. Pulling 950w from the wall according to kill-o-watt (EVGA 1300 G2).

A final interesting note and question. For the first time I got a payout from my pool (dwarfpool) and it not show up in my wallet. Normally its like a minute before it shows up. Its been 6 hours and it still isnt there. The transaction shows up on etherchain so not sure whats going on at this point. The wallet is @ coinbase......anyone else have anything like that happen before?

GJ!

Try lowering voltage and core frequency more. Set GPU clock to 980Mhz and voltage to 900-920 mv. 1020Mhz on core works well too, but some card may need higher voltage.

 

[Pete_69]

Thanks for the replies, I went into the Bios and enabled dual graphics and allocated 2Gb but it knocked my rate down from ~27Mhs to ~25Mhs.
So I have now left it as normal and just mining with the RX480.
Thank you again.

 

[paperfist]

Don't shoot me, but I can make money with my GPU like they used to do with SETI research, but without the money?

 

[Hitman928]

GJ!

Try lowering voltage and core frequency more. Set GPU clock to 980Mhz and voltage to 900-920 mv. 1020Mhz on core works well too, but some card may need higher voltage.

From what I've seen with multiple cards, the 480s (and 470s) have a voltage floor of ~990 mV when mining no matter how low you set the voltage in Wattman, at least according to the gpuz voltage and power sensors.

 

[Raduque]

Is this still profitable? I have a 280x sitting idle. Can it make me some money? My electricity is about 8c/kwh I think. Rest of the PC is a core2duo and 6gb ddr2.

 

[Accord99]

Is this still profitable? I have a 280x sitting idle. Can it make me some money? My electricity is about 8c/kwh I think. Rest of the PC is a core2duo and 6gb ddr2.

A conservative estimate would suggests 50c-70c per day based on current difficulty and price.

 

[Raduque]

A conservative estimate would suggests 50c-70c per day based on current difficulty and price.

So I guess the mining profitability calculator is wrong?

 

[Accord99]

So I guess the mining profitability calculator is wrong?

I think their estimated hash rates are too high, a full Tahiti can no longer hit 20 Mhash/s and power usage will be very high.

My estimate is also net after electricity costs.

 

[Yakk]

My older 280x cards are currently running 18.5 MH/s and even older 7950s run 16 MH/s right now while dual mining SC.

 

[Erenhardt]

From what I've seen with multiple cards, the 480s (and 470s) have a voltage floor of ~990 mV when mining no matter how low you set the voltage in Wattman, at least according to the gpuz voltage and power sensors.

You need to change both. Core and 'memory' voltage.

 

[tracerit]

any tips for mining remotely?

I'm going to install two cards (deciding if I should go with RX 480s or R9 390s) into my work computer. The power hit from there will be minuscule compared to running at my home.

So far I just have remote viewing software in TeamViewer and ethermine.org has a cool feature that will email me if a machine stops working.

The thing is that I have a password to log into my account, but in the case of an unexpected reboot overnight, it won't autologin and run the .bat file. Any creative solutions to this? Most likely won't run into this issue though, but the internet is spotty over there.

 

[Accord99]

The thing is that I have a password to log into my account, but in the case of an unexpected reboot overnight, it won't autologin and run the .bat file. Any creative solutions to this? Most likely won't run into this issue though, but the internet is spotty over there.

You could create a new task with task scheduler which runs at system startup. This task would run the batch file with your credentials.

 

[suklee]

any tips for mining remotely?

I'm going to install two cards (deciding if I should go with RX 480s or R9 390s) into my work computer. The power hit from there will be minuscule compared to running at my home.

So far I just have remote viewing software in TeamViewer and ethermine.org has a cool feature that will email me if a machine stops working.

The thing is that I have a password to log into my account, but in the case of an unexpected reboot overnight, it won't autologin and run the .bat file. Any creative solutions to this? Most likely won't run into this issue though, but the internet is spotty over there.

Did you get Chrome Remote Desktop to display the cursor properly? Might want to have that set up, in case Teamviewer doesn't work or does not display AMD Radeon Settings properly, which will happen if you don't have a monitor plugged in.

Second, what if the machine crashes, without a reboot? Your office rig will be left "on" until you are back to physically reboot it - although it won't draw as much power as a rig that's mining, of course. My solution involves using Belkin Wemo Insight switches to remotely control power to the socket, but I'd be interested to hear of others' suggestions.

 

[tracerit]

You could create a new task with task scheduler which runs at system startup. This task would run the batch file with your credentials.

I'll look into this thanks

Did you get Chrome Remote Desktop to display the cursor properly? Might want to have that set up, in case Teamviewer doesn't work or does not display AMD Radeon Settings properly, which will happen if you don't have a monitor plugged in.

Second, what if the machine crashes, without a reboot? Your office rig will be left "on" until you are back to physically reboot it - although it won't draw as much power as a rig that's mining, of course. My solution involves using Belkin Wemo Insight switches to remotely control power to the socket, but I'd be interested to hear of others' suggestions.

I'm back to a single GPU for my home computer now but I still have issues with the horizontal line cusror bug. Using mousekeys worked the first time, but this second time hasn't... I had to enable mouse shadows which sucks because it makes my 144hz monitor look like a 60hz again lol. AMD Radeon Settings is sooo buggy, keeps crashing on me when changing settings. It's a horrible software when trying to use it. Hopefully after tweaking everything I won't have to use it again.

My work computer has had excellent uptime, going for 30 days before, but that was doing nothing lol. I'll cehck out the Belkin item, I've always been interested in something like that. Thanks

 

[suklee]

AMD Radeon Settings is sooo buggy, keeps crashing on me when changing settings. It's a horrible software when trying to use it. Hopefully after tweaking everything I won't have to use it again.

Make sure to turn off your miner before changing any Radeon settings

My work computer has had excellent uptime, going for 30 days before, but that was doing nothing lol. I'll cehck out the Belkin item, I've always been interested in something like that. Thanks

As a bonus, the Wemo also monitors and logs power usage, and can even mail you daily/weekly/monthly reports, however I'm not 100% convinced the app is recording usage accurately (yet).

Does anyone else know an Internet-enabled device that is like the Wemo Insight, i.e. can remotely power on socket, and log/monitor energy usage?

 

[Pete_69]

Hello again, I now seem to be running in to errors.

I leave the miner running 24/7 no problems, but when I game also it keeps crashing, only game I really play is Ghost Recon Phantoms.
Most of the time it is white screen, game and miner crash, then writing on start menu is purple, have to reboot, some times with black screen. Once it actually crashed windows with the sad face on blue screen saying Memory Management error, ran a few system checks through command, 1 found overlapping files and cleaned them, but it is still happening.

Now you guys, what do you think, card problem or something else?

Oh also, when I first got the card it blew my weak cit psu, but all seemed to be working ok after the reinstall of new psu.

 

[Yakk]

If you are mining and gaming at the same time on the same GPU I'd expect it to crash.

 

[Pete_69]

Ah ok, I heard you could do both but just slows mining down which it did. Glad to hear nothing wrong then thanks.

 

[fleshconsumed]

Maybe it depends on the game. I play old Left 4 Dead (the first one) while mining on my 290 and it runs perfectly fine. My hashrate gets reduced from 28-29Mhs to 20-22, but no crashes. Of course, as I said it's an old game that doesn't really tax the GPU too much, no idea how it would behave with newer games.

 

[Yakk]

VRam allocations, bus saturation, other GPU resource allocations per application will all affect the GPU. If something is required by both applications running in the GPU at the same time with no error management things will crash, sometimes hard. Mining programs are not the cleanest written code either...

 

[Erenhardt]

I had a great results playing CS;GO and mining at the same time on rx480. Rust works nice aswell. Some more demanding games can be very laggy (like below 10fps).

There is also intensity setting which will free some gpu resources.