Are you using the AMD blockchain driver? you can't get very fast speed without it.

I have used HDMI plug as well as no plug at all.

Both does not affect hashrate.

Must be something wrong with your system.

> Above 4G Decoding set to Disabled

Disabled? Weird.

When I'm using claymore with argument to overclocking and undervolting, it only applies to the first GPU, all the other GPUs are at default BIOS settings.

Anyone have seen this before?

You should at least check out windows device manager see if all GPUs are all recognized and functioning properly. If not, try edit your bios setting like "PCI E Gen", and "Above 4G Encoding"

I used MSI Z170-A Pro for 6 GPU. Just need to update bios and set above 4G encoding to enabled.

Here in Canada sometimes I see price for RX480 4GB ref as low as $240, it's even cheaper than most RX470.

I nabbed a few of those and they are all samsung memory.

Ya when I use my Asrock H170, I had to set TOLUD to 3.5Gb instead of Auto

I am using this ASRock H170A-X1/3.1 Intel Skylake 1151 for 5x RX480. It's working ok.


Also bought MSI Z170-A PRO LGA 1151 and it's being shipped.