Folding@Home I am here for a Moonshot...or two

[Vester]

I blew the dust out of my old mining rig when I read about the need for GPUs to run COVID Moonshot GPU (OPENMM_22) projects 13420-1 to FAH. I am running one AMD HD 7790 and four HD 7990 (dual GPU) video cards. I have not noticed any delays uploading or downloading work, and I will run until I cannot stand the heat or the power bill for 1500 watts of crunching.

 

[Nick Name]

Great to hear! I've just been running the single RX 590, honestly haven't paid much attention to it, I just let it run. 1500 watts is quite a bit of juice, are you using dual power supplies? You don't have to run them all, it's ok to just run a couple if you want.

 

[Vester]

Yes, I have dual power supplies on the miner. I have a 1250 watt OCZ ZX for the motherboard/CPU and two HD 7990s, and I have just two HD 7990s on an OCZ ZX 1000. The power factor is better at 50% of rated load. Running fewer GPUs does not compute in my brain. [ Edit] I had to reduce folding slots from eight to 4. The LED lights in the room were blinking due to low voltage indicating that my home wiring was overloaded. I have considered 240-volt outlets for the miner. The power supplies are rated for input of 90 to 264 Volts AC.[/EDIT]

I am also running an AMD 7790 (not 7990) in my desktop computer. It is very efficient and returns about 140,000 ppd overclocked @1155 MHz. The 7990s do not overclock well, so they are at 1000 MHz, mostly due to heat.