Actually you can set different overclocking values for each card. For example if you wanted to set a clock of 1215 for the first and 1130 for the second you'd put in this: "1215,1130". The first value is applies to the first card, second to the second and so on. The same logic applies to the memory frequency and voltage as well. The card sequence is based on the PCIE slot order, so the first card is the one in the first PCIE slot, etc.

Hope this helps 

You can use an RX580 and RX480 together, but you cannot mix different architectures together - ie Nvidia and AMD. You will need a separate rig with the NV version of SMOS installed.

Overclocking your AMD cards is pretty simple. Once you log into you simplemining web panel click on your rig's corresponding little gear icon in the "actions" section.

Your friend has around 600 mh/s and you have about 115.
The variance will be far more noticeable for your rig.
That's why his chart looks stable.

Memory errors are due to excessive OC. Try lower clocks, it lessens your memory errors.

I think it is quite stable for those using solar power, and I think that if Bitcoin becomes really successful, there will be a large number of individuals striving to learn more about this field, just to get into the mining business.

that's what I'm trying to learn right now mate on how to use solar energy to avoid the cost for electric bill I know the capital that's needed is really huge but the opportunity to roi in much faster time can be achieved, and you are correct after bitcoin succeed more people will start to look for this opportunity too.

yes it is. what about pascal coin ? any idea ?

it is getting harder everyday as level of difficulty increase !!

100% correct. You cant have same values for each card, because they are not same quality build.

I have one separate PC, where i test each card and let it run few hours with best OC settings. If everything works fine, no issue, no errors on HWID i add it to mining rig. I did with each card same proces. It is pain in ass, but once you set up, all works fine in future.

Same cards, but different quality build. That is issue. I have RX 470 that can handle 1150/2090 with 28.5 hash rate, but also have another one that maximum is 1150/2025.

Your card are overlocked. Decrease mem clock until 0 errors.

install hwinfo64 and watch for memory errors. if you get errors then you should reduce your OC

Well you're decrease in payout is expected. as the dag epoch # gets higher, your hashrate will decrease and you'll receive less shares. your mining probably wont be profitable 4-5 months from now. If you still think your shares are too low you'll have to do a google search and check other forums, im not sure how else to help you.

as for another coin to mine, I dont think there is any other coin that can give you more profit then ethereum right now

Ok so your mining hashrate is pretty stable line, you said you have 4 rx480,'s and judging by the graph each one is mining anywhere from 27-29 mh/s and your expected shares look as they should. both those graphs look perfectly fine. Its just harder to notice the difference because your friend has around 20-25 gpus and the change is more subtle.

If you're having problems with miners shutting off after 20 minutes then that's another issue, im not sure how to help you with that other than to tell you to test each car individually, run it for an hour or more and and see if the problem is isolated to one card or all of them.

one other thing, I believe this line needs to be set to 0 (setx GPU_FORCE_64BIT_PTR 1), not 1, because you are only using 4gb, not more. If you begin to have issues though change it back.

Correct, it really depends on the pool that you are using on how they do visualize the mining stats and i didnt even see about that flat line, maybe its just an another setting of the chart that you mean. Zig-zag would be always noticeable and its a good indication and besides mining difficulty does increase which means hashes or profits would be more lesser and lesser.

Im no expert on these things,but here are some things you could play around with to see if you get more stability.

- Try updating your drivers to a more recent version.

- As a few people said above, your friend has found a stable clock settings, so you could try using        the standard clock and increase it till you hit your desired hashrate/stability.

- Make sure it's using asm algorithm and you could try controlling your speeds with -dcri command.

- And the last thing I could think of is sometimes you can get instability issues from incorrectly installed or poorly modified bios. You could use this guide to flash them properly: http://1stminingrig.com/best-bios-rom-sapphire-nitro-rx-480-8gb-oc-mine-ethereum-30-mhs/

I see no problem at all with what you posted. What exactly is the problem?

Mining isnt a flat line, you may just think that because some pools do smoothing on the curves so that it looks nicer.

For example:

bitcoin miner:



ZEC mining:



ETH mining:

What GPU are you using? cause some of them use Overclock setting as stock, and care to post your miner .bat settings so I could see what you have set, cause I believe there are some stability commands to type in depending on your card.

Your mining hashrate isn't stable mainly because of the tweaking you've done to your card.

Try playing around the overclock settings. Alter the core and memory clocks until you find a stable setting.
Changes in the hashrate should be about +5/-5.

Look for rejected shares in the miner.

Overclocking/undervolting too much can affect effective hash rate. Your friend has probably found good stable clocks so that his effective hash rates are closer to reported.

Try reducing the overclock. Your reported hash rates may come down, but it should get closer to effective. Look for cards that are submitting incorrect shares. If you're using Claymore, you can find this by pressing 's' and it will show you submitted shares per card and incorrect shares per card. If there are cards that have low shares/any incorrect shares, start by underclocking those. I do 10mhz at a time, let it run and do it again like a day later.

I noticed my power settings can cause huge fluctuations and also how you are OC'ng the card (if you are)--also var difficulty can change the hashrate.  But I never see a flat rope.  I wouldn't worry about it unless you are getting a much lower hashrate than your friend.