RX 480 - artefacts Help

[shadowhlohavec]

Hi there, I have been mining with my new RX 480 gaming x 4gb for about a week, I have bios modded it before, just changed the straps and for mining it was slightly memory overclocked (for eth mining) after a week my pc couldn't recognize it and I found out that it has artefacts. A similliar thing happened to my other rx 480 plugged to the same rig, I am not sure where is the problem, we have changed the psu now... Your thoughts?

[koody]

Test it without overclock, just stock clocks and original bios to be sure that gpu is ok, then test one modification at a time (bios mod, overclock).

[cryptominer420]

Had this same issue on my old 5 card rig, it turned out to be a bad flash due to and in combination with a bad PCIE slot on the motherboard. Flashed it on another computer and re-inserted it into the PCIE slot via riser and it worked but due to the bad PCIE slot the system would randomly reboot. This is why I switched to all 4 card rigs.

[shadowhlohavec]

What are your temps? Switch PCI slots and add more fans.

It was about 70C, slightly more than average but these should be resistant cards

[shadowhlohavec]

Had this same issue on my old 5 card rig, it turned out to be a bad flash due to and in combination with a bad PCIE slot on the motherboard. Flashed it on another computer and re-inserted it into the PCIE slot via riser and it worked but due to the bad PCIE slot the system would randomly reboot. This is why I switched to all 4 card rigs.

it can be temperature or pcie problem, because both cards died when plugged in x16 port