Rig shows different hash rate for same GPUs

[farzad88]

hello
hope you are doing well
I have a rig with the same RX-580 GPUs but the hash rate of GPUs differ, I have attached the photo of my HIVEOS too,

as you can see the GPU0 and GPU1 are normal but the remainders hash rate is around 8 mhs
thank you

[Base4291ball]

Where are your OC settings at?

[farzad88]

I didn’t OC right now, tested OC with OC all GPUs work well for a few minutes after that some decreased hash rate and a few states will be N/A on HIVEOS

[keaton_hiveon]

Set your clocks, tuned per each card. Don’t mine at stock settings

[farzad88]

why the GPUs hash rate is too low without OC, I considered GPUs with Samsung FB chipsets to be normal but chipsets with Samsung FC chipsets have problem with hash rate around 8mhs.

thanks for your replies

[keaton_hiveon]

Don’t mine without setting clocks, default clocks are bad for mining.

[cypher619]

I’ve got a bunch of RX580s with Samsung FC and they are difficult to work with. Are you running stock bios on the cards or have they been modded? After I modded them with PBE they started working better. Im lucky to get 30mh on the FC’s

[farzad88]

Thanks for your response
with stock bios the mhs is around 8 mhs but when I overclock the GPUs it will be 29.6 mhs
this issue is just for GPUs with Samsung FC memory cards