Quote from: milosx7 on March 04, 2020, 02:47:39 PM

Hello bitcoin forum! Haven't posted here in a while...

I have recently bought my "new" gaming PC. Parts are used so, it's not new, but it's new and beefy for me.

MOB: MSI Z77-G55A
RAM: 8GB DDR3 Patriot
CPU: i5 2500K
GPU: RX580 8GB (Sapphire Nitro+, samsung)
SSD: Patriot 250GB
PSU: beQuiet! Dark Power Pro 10

Parts costed me ~400$ total. Since I was caught in some deep shit with drugs, lost my gaming and mining PC to it, I was finally able to overcome that and I'm making a slow but steady comeback.

I figured I could mine and trade a little bit until I make back 100$ which is how much my GPU costed me, and I'm planning to buy another one, and make a Gaming + Mining PC all-in-one. I mostly just write code on my PC, and my GPU has been mining for about 2 weeks now and I'm happy with its performance. This specific model runs pretty cold for an AMD polaris card (or is it polaris, I'm kind of losing track with all these GPU releases in the past couple of years...)

I'm mining ethereum solo with good ol' claymores software through nicehash, where I also trade other crypto, make 1000-2000 satoshi here and there mostly for fun, but who knows

Only thing I can't seem to figure out is the most optimal clocks for mining. I know I can't use furmark, ashes of the benchmark or other GPU stressers because gaming and mining are not the same. I'm getting around 6-7 rejected shares / 24h and I'm not sure whether this is OK. My current mining mode OC is:

MEM: 2100MHz @ 850mV
CORE: 1108MHz @ 850mV
Mode is also changed to compute in adrenaline. No bios mods have been done. Guy who sold me the GPU was also using it for mining and he took good care of this puppy.

I have figured that increasing only memory clock doesn't doo much unless I bump core clock a little bit too. My default mV for memory is 950 which I use to play games with, and I used this mV to mine until today, I have lowered it to 850mV and it feels the same (but 95w to 77w baby, that's money right there!)

How do I know if things get unstable? My previous 6x 1050ti rig would just completely freeze the OS. Their memory clock would easily bump to max because nVidia, so I only had to tweak core clock to find a sweet spot... But with this card I don't get no crashes / bsods, rejected shares ~6/24h with any voltages and clocks I've tried so far, I'm not sure how I can fine tune this to the max.

Also, one last question, this asshole sold me his "modular" psu with only mobo, cpu, and 2 peripheral cables. So I had to buy some shitty sata > 6pin and 8pin pci-e to hack my way into making my GPU run. Anyone has any idea where I could buy cables for my PSU (don't wanna pay 100$ for cablemod when I could get a brand new PSU for that money). I don't want to resell this PSU to anyone in this state (and I'm planning on replacing it in the future), and it's a pretty quality PSU so if I could get the missing cables for cheap that'd be a BOMB.

Thanks for reading, share your thoughts and opinions, everything is welcome! Have a nice day!

How much is your power bill? If its around the industry average of 10c per kwh then it will take you a very long time to make that $100. Basically with 10 cent power they net like $0.20 per day so you are looking at 500 days. And most likely in the future the difficulty will go up and it will take longer.

You didn't state your speed but if you are getting around 30MH/s then its pretty optimized. Since you only got 1 GPU in your rig your power consumption will be around 150 Watts from the wall because you got a motherboard, cpu, ram, hard drive to power. Hence you are better off putting 4-5 more GPUs in that rig to bring down the power consumption to like 120 Watts per GPU.

Regarding the cables. You best bet is something like aliexpress but right now you can't exactly order things from China. Another method is just to buy the cables, crimp tool, pins, and connectors and just build them yourself. Most expensive thing would be the crimp tool. You can also see if they have any cheap modular cables on aliexpress, probably much cheaper than cablemod.