Quote from: Teilk420 on July 10, 2019, 12:30:43 AM

hi guys i need help getting more than 1 gpu mining. 1st card is card is a Sapphire rx580 & the 2nd is a XFX rx480 both have 8gb Vram. Both have modded bios and mine fine by there self. I have the AMD mining driver installed & i have ran the atikmdag-patcher-1.4.7. Also they are both in the x16 slots of my motherboard once i got these going i was going the start using riser cards for any additional cards. I am using Claymore mining software running on windows 10 & i only see my 580's average hash rate so i assume my 480 is not being seen. It sucks cause i just invested a good bit between a new PSU and the 480 to try to start really getting into mining. I would appreciate any help and tips/tricks anyone can provide.

I am having trouble understanding. So you had an Sapphire RX 580 and you mined with it solo and it worked. Then you bought another RX 480 and you tested it out solo and it worked.

Then you added both GPUs directly on the motherboard, so one is x16 and the other is most likely x8 so they both run at x8 bus speed.

Now when you are in device manager you only see 1 GPU correct? The 2nd one isnt listed with a "caution" icon, meaning Code 53? Code 53 is solved by the atikmdag.

Only thing I can think of here is you got some PSU issues or you need to connect a monitor to the 2nd GPU and maybe it will show up. Do you know if you have crossfire enabled? If you do, disable it.