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Problem with mining with 8 gpus


New Member
Apr 8, 2022
1 (0.00/day)
Im trying to add 8 gpus on my rig that has only 6 pcie slots, every time I try to add the 8th gpu my system won't boot up, I'm fine with 7th gpu but I can't do 8 gpu. I'm using a 4 in 1 connector its seem to be working with 7 gpu but not 8 gpu.

I'm using a B450-A Pro Max AMD motherboard and AMD Ryzen 3 1200 quad-core processor

Is there some special setting that is required to use up to 8 gpus on the motherboard?


The Exiled Airman
Jul 2, 2007
37,584 (6.67/day)
Republic of Texas (True Patriot)
System Name PCGOD
Processor AMD FX 8350@ 5.0GHz
Motherboard Asus TUF 990FX Sabertooth R2 2901 Bios
Cooling Scythe Ashura, 2×BitFenix 230mm Spectre Pro LED (Blue,Green), 2x BitFenix 140mm Spectre Pro LED
Memory 16 GB Gskill Ripjaws X 2133 (2400 OC, 10-10-12-20-20, 1T, 1.65V)
Video Card(s) AMD Radeon 290 Sapphire Vapor-X
Storage Samsung 840 Pro 256GB, WD Velociraptor 1TB
Display(s) NEC Multisync LCD 1700V (Display Port Adapter)
Case AeroCool Xpredator Evil Blue Edition
Audio Device(s) Creative Labs Sound Blaster ZxR
Power Supply Seasonic 1250 XM2 Series (XP3)
Mouse Roccat Kone XTD
Keyboard Roccat Ryos MK Pro
Software Windows 7 Pro 64
Maybe that gpu is broken