Quote from: shakeandbake on April 19, 2017, 11:02:57 PM

My experience:

For XMR cpu mining is far and away more profitable in large part due to stability. GPU mining had the benefit of flexibility in that you can switch coins; however, CPU mining has the stability rivaling an ASICS. My 32 cpu opteron c7000 blade chassis has been running 24/7 under max load since August 2016. Zero crashes. My GPU rigs I restart weekly.

Oh ok. Well, electricity is no problem for me now. Should I restart PC every week? I will use GPUs mostly. I still don't know what CPU is in that PC I hope for 45nm Core 2 DUO, HP says PC can run Core 2 Quad 2.66Ghz, but on mobo specs it says Q9xxx so it could be 3.16GHz. But I'm worry about heat so I think it would be more wise use 65W Core 2 DUO than 95W QUAD. I have i7-870 and that beast is powerful CPU but also good oven.

Quote from: Elder III on April 19, 2017, 08:50:28 PM

Chieftec is by and large poor quality and unlikely to provide it's rated watts (or die quickly if worked hard). I don't know about MS-Tech, but usually cheap price is a bad sign for a PSU. Zalman makes some decent products and I think that model would be a safe buy. For a rig that is going to be mining 24/7 you will save money in the long run by buying a Gold or Platinum rated PSU. The efficiency isn't as big of a deal for general use with a few hours gaming, but for 24/7 mining under heavy loads the extra efficiency does make a difference.

Today I've bought R9 380 Nitro 4GB for 120 USD.
What PSU I need to run 2 of these and 1 less powerful GPU? And what PSU for 3 of these? What do you think?

Thank you guys for advices, very helpful for me.