- May 2, 2018
- 2
- 0
- 10
Specs:
2 x AMD R9 390
AMD Ryzen 1600
8GB DDR4 RAM
AM4 MSI B350 Gaming plus motherboard
BIOS type: MSI Click BIOS 5
AMD Driver version 18.4.1
Hi, I've been trying to crossfire my 2 R9 390s, my motherboard definitely supports it but the option isn't available in radeon settings. I've worked out it's because my second PCIe slots is throttled down to x2 when it should be x4 (or x16, motherboard says it's x16 as well but the BIOS says it's x4 so
) This means I cannot crossfire because you can't on x2.
Both GPUs definitely work but one is always idling, it will not spin up, unless i plug my monitor/s into it and then the other one idles instead.
I've tried:
-Updating BIOS (line of motherboards shipped with faulty BIOS meaning it didn't support crossfire to begin with anyway I believe but that should be fixed now)
-refitting GPUs
-Disabling ULPS in RegEdit
-Resetting CMOS
-Getting really angry and hitting my desk.
P.S.- Also since updating my BIOS I have been unable to access my BIOS, no motherboard splash screen shows up and it boots straight to windows. This might be because during the update it enabled fast boot, but if I mash delete to access BIOS my PC never boots up it just hangs and my monitors go into sleep mode.
Thanks.
2 x AMD R9 390
AMD Ryzen 1600
8GB DDR4 RAM
AM4 MSI B350 Gaming plus motherboard
BIOS type: MSI Click BIOS 5
AMD Driver version 18.4.1
Hi, I've been trying to crossfire my 2 R9 390s, my motherboard definitely supports it but the option isn't available in radeon settings. I've worked out it's because my second PCIe slots is throttled down to x2 when it should be x4 (or x16, motherboard says it's x16 as well but the BIOS says it's x4 so
) This means I cannot crossfire because you can't on x2.Both GPUs definitely work but one is always idling, it will not spin up, unless i plug my monitor/s into it and then the other one idles instead.
I've tried:
-Updating BIOS (line of motherboards shipped with faulty BIOS meaning it didn't support crossfire to begin with anyway I believe but that should be fixed now)
-refitting GPUs
-Disabling ULPS in RegEdit
-Resetting CMOS
-Getting really angry and hitting my desk.
P.S.- Also since updating my BIOS I have been unable to access my BIOS, no motherboard splash screen shows up and it boots straight to windows. This might be because during the update it enabled fast boot, but if I mash delete to access BIOS my PC never boots up it just hangs and my monitors go into sleep mode.
Thanks.
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