High invalid rates on VEGA 56 and RX 480

[mapminer]

Hi,
I’m having a very high ratio of invalids and those 2 cards, I tried some small modifications, like increasing wattage, or slowing memory clock, but no luck…

Any proposal?

Here are my settings:

Thanks!

[Grea]

480 test:

• Lower core to 1100 and mem to 2000
• Not shared in your post but should be running REF 20 vs 30 for Samsung

[mapminer]

Hi, yes REF is 30. With your settings the 480 seems not having more invalids (running for 30 minutes already)

[Grea]

Your 480 should be amdmemtweak --REF 20. (Samsung Memory)

The 580 should be fine with amdmemtweak --REF30. (Hynix/Micron)

[mapminer]

ok, thanks!
any suggestion for the vega?