I think I have problem with my power supply not giving enough juice for possibly even 2 GPUs (I have 3 GPUs). I currently have a Corsiar RM 850W with +12V at 70 AMP (~850W) on that rail.
I have 3 cards:
Sapphire Radeon R9 280x
MSI Gaming R9 280x
XFX R9 290x R9-290A-ENFC
#1 Test -> The power usage according to my Belkin monitor goes to near 800+w and which I believe eventually causes my system to crash (< 15 minutes).
#2 Test -> I have tried to lower it down to ONLY 2 of the 280x. This time the Belkin monitor goes to around 650w and then my system crashes in less than 15 minutes. I would think the RM 850w is enough for this at least?!
#3 Test _.Anyhow, I am currently down to test using only ONE 280x. The total watts usage is at 335watts and the system is running over 15 mins. I will keep on testing this.
So my question is does my Corsair RM 850w PSU just suck? Does it seem like cause of #1 and #2 test failing?
Finally, what power supply (or additional PSU) can I get for my rig? How much wattage and 12v amp on the rails do I need?
Thanks in advance!