Bitcoin Forum

Hi guys,

Im looking for some help. I tried out to solo mine with this guide: https://www.cryptocompare.com/mining/guides/how-to-mine-ethereum/
It works fine. The problem is, I only get a hashrate of 13 Mh/s. Many others who have this GPU got at least 20 Mh/s. I think something about my settings is wrong. ???

My System:

Windows 10 64bit
AMD Radeon R9 380x OC 4GB
Catalyst 16.3.2 (the latest)
Ethminer 0.9.41

If you need more system information or log files, just tell me.

Thank you for your help ;D

it's probably due to windows 10 and the lastes drivers catalyst, you need to search the correct drivers, probably some old drivers that can give you the full hashrate

My first guess would be the catalyst drivers.

About three weeks ago, I updated my drivers on my Windows 7 rig to version 16.xxx. My hash rate dropped about 2/3rds.

I am now using 15.3xxx and that seems ok and about par with any of the 15.xxx drivers.

With three r9 380 4gb cards and one r9 280 3gb card I get close to 100mh/s.

With only 4 cards, you can get 100 MH/s. That is very fast. Do you mind sharing your settings for the cards?

Got best hash rate from the 16.1.1 release. Tried several others. That one came out best :) (also on windows 10)

Drivers depend on your hardware setup, I put the latest on my pc with 2x7950's and it would hash fine for a few minutes and then crash the graphics.  Under 15.12 they would hash slow at about 20gh and then under 15.11 I got the best stable hash at about 36 gh and no gpu crashes.

I recommend 15.11 and only install the drivers not the other junk they bundle.  Also make sure to uninstall previous, reboot, install, reboot and you should be good.

http://support.amd.com/en-us/download/desktop/previous?os=Windows%2010%20-%2064

I thought the 15.11 is the beta version, does it also work properly as the other normal versions?

I have no special settings I know of. I am using the nice hash eth miner. Not the Windows gui version they have.

If you go to nice hash, in the miners list (upper right link - their website is kind of all over the place) and enter my Bitcoin address

1H8mrvThSv9oUkXJdEyLkRqYb1Hr96mnec

The stats will show the hash rate. It may be down a bit right now because they show X11 as paying more and I was trying to see if I could get that running but their gui miner said it was paying less?????

Please comment. I will elaborate more later.

Is your earning of bitcoin by mining Ethereum using 100 MHz compatible with theroretical calculation?

I am a newbie and do not understand your question. I mine eth on their site and they pay me in Bitcoin. I like that because I do not have a good 32 bit wallet for eth and I do not have to exchange it. They take care of that for me.

You are effectively mining with only three cards, fourth one mines for nicehash. Just saying.

It works way better than the other versions, 15.12 is too slow, newest crashes my system and 15.11 works perfectly.  I think it is normal release and not beta as it is listed on amd page but eh who knows maybe it was a beta.  Either way I could careless as long as I get max speeds and a stable driver.  Please note the version that is best for you depends on your specific hardware and this is just my experience.

I used to mine with Nicehash to rent my rigs. But the Ethereum mining is not rig renting, it is just a normal pool.

Normal pool with a huge fee, currently 28%.

That is huge. How do you calculate that? If a miners know there is such a big fee, will they mine there?

Easiest way is to use some online calculator, for example whattomine. Right now there is 12.7GH of miners that haven't done their math.

As a test, I have switched to Nanopool. Not that it is the be all, end all of pools, but it is the only one I know of at present.
It has only been running about three hours now, so my figures, based on the averages it shows, may be a little off.

my hash rate on nanopool is showing at 84.5Mh/s (it was showing at 95Mh/s on NiceHash)

Over the last week at let's say $11.00 per Ethereum

NiceHash - about $9.00 per day
Nanopool - about $11.25 per day

Now, NiceHash says their fee is  3 percent., as I recall.
There is a hidden fee somewhere?

84.5MH looks right to me, 95MH with 3x380 + 280 is impossible.

There is nothing hidden there, they tell you how much they are ready to pay for your ETH hashpower. If you agree it is a deal.

ETH is a special case in nicehash, unlike every other algo, you can't buy hashingpower so there is no marketprice.

That is the reason I do not use Nicehash for Ethereum mining, as there is no market there. You just rent it to Nicehash.

the driver in the link above is the crimson 15.11 and the beta version you're referring to is the catalyst 15.11.1 beta.
i have no clue what's the difference between the two; just noticed you two are talking of two different drivers thought i'd point out!

edit:
just looked it up on driverserve.com (https://driverserve.com/graphics-card/amd/amd-radeon-r9-380-series/)
both Catalyst 15.11 & 15.11.1 are beta version but the crimson 15.11 is not, crimson 15.11.1 is!

For me, the crimson 15.11.1 does not work properly, but the Catalyst 15.11 & 15.11.1 works very well.

Yeah, I had an issue with massively slow hashrate on a brand new 390x.  Had the newest Crimson installed, bumped back to 15.something and my hashrate went to where it should be.  By bad hashrate I mean it was only putting out maybe 10 and it was never recognized by the pools.  So what I am saying is you need to do a search for a version of Crimson that will function properly for your setup. 

For me, the Crimoson cannot regcognize 8 GPU in my 4x7990 set up. I used the lbr 7+ driver mod, did not work.

For my 4x7990 setup, with Catalyst 15.11 or early, the 8GPU were recognised instantly, there is no need to mod.

May i know What type of mobo you are using to run 8 x GPU ?

I have a few motherboards running 8xGPU. For the 4X7990 = 8 GPU, it will run on many MB. Nothing special.

For the 2X7990+4X7970 or 2X7990+4x390, I use the Asrock H61 pro BTC.

I have the 2X7990+4x390, I use the Asrock H81 pro BTC. But I have to use two power supplies instead of one.

If you under volt the 7990 and 390, you might be able to use one power supply, such as 1250W platinum .

Which driver version can possible to change(underclcok) then the deafult speed.( mem and core).15.7.1 and. crimson 15.12 cannot possible.Anybosy knows ?

I used the 14.4, 14.6 and 14.9, 15.7.1, 15.11. They can all change the voltage of the Core and the frequencies.