Quote from: soothaa on May 15, 2017, 01:41:06 AM

Quote from: decayinjack on May 14, 2017, 06:17:38 PM

Thanks to Soothaa continuing after I gave up. I can now run 7 570s on my 170a boards!

Anyhow, I've been carefully watching my power usage due to having to make sure I'm balancing the load of my machines across circuits. I'm not doing anything with the bios tuning to try and lower my power but I do set all them to power stage 4. With that, a 7 gpu rig runs under 1000w at the wall or just under 9 amps.

I have $7k invested in this, I wasn't about to give up! Tongue

Yeah balancing is a bitch isn't it?

With multiple jobs tugging at my time and a significant adversion to downtime, I just couldn't afford the extra time needed to continue tuning. I had so many GPUs come in that I didn't have a test bench anymore! With 5 z87 boards maxed out at 7 cards each that were super stable, I was just going to see if I could find a few more. Thanks again, you've given me the added problem of having to find a few more gpus in order to max out my z170a boards!

Now, if I could only get risers to stop dying on me. Between some junky new USB risers and the old ones I have from 2013, it seems like anytime I have to move or reboot a system, there's a riser issue. I've been meaning to say something for a bit but I wanted to give a shout out to the guys from Miningparts. I just bought a bunch of new risers from them and they're my go to when a gpu starts acting flakey.

One last thing for all the guys asking about power, I was trying to understand the difference between what the cards were using versus what I measured at the socket(efficiency) when I found this great resource for power supply sizing:

http://www.coolermaster.com/power-supply-calculator/

I've been buying 1200s for my 7 GPU systems but this is saying a 1k should be sufficient. That jives with what I've been measuring at the wall on my maxed out rx470 systems so I'm trialing a couple evga G3 1k power supplies. If that works out, it'll save me about $100 per new build.