ASRock Fatal1ty AB350 Gaming K4 is capping out at 3 GPUs for me under Windows 10... Tried adding 1 card at a time with full power off and CMOS clear between each card but at 4 cards, 1 of them will fail to detect correctly and only 3 or even only 2 will be able to mine. Occasional BSOD with 4 cards, 5 cards is nearly a guaranteed BSOD or a laggy and unusable windows until a BSOD within a minute after booting.

No PCIe options in BIOS, page file increase made no difference and extra ram made no difference.

Was testing with a sata connected SSD and tried multiple clean installs of win 10 with nvidia drivers 368.81, 375.70 and the latest 382.53 with the exact same results.

The 5x V006 PCIe riser boards didn't even power up the GPU's (tried direct 4pin molex and sata to 4pin adapters and even new USB cables) so i suspect that entire batch was faulty but the V007S ones all worked without issue.

Gave up and resorted to SimpleMining (SMOS), first boot with all 5 cards connected and been stable and mining at 130MH/s for 12 hours now with 5x GTX 1070's... Sadly they are only at the stock 26MH/s and not the 29.5MH/s i was able able to push them to in windows as the overclock function in SMOS does not work with the nvidia build.


tldr version, dont get the ASRock Fatal1ty AB350 Gaming K4 for windows mining...