Memory Clock Not Effecting ETH Hash Rate

[avp2306]

So for some reason my memory clock has absolutely no effect on my ETH hash rate.

Everywhere I read, everyone is saying that its the memory clock that has most impact on ETH hash rate, but I see absolutely no increase between 1750 -> 2150.

The only way I'm able to bump up the hash rate is increasing GPU clock, its a very slight bump, going from 1050 -> 1125 gives me a bump of 0.75 MH.

Using Sapphire RX 470's 4GB Nitro (Non +).

I tried modded bios, 1500, 1425 & even 1375 straps. I'm undervolting GPU, but not touching the memory voltage.

But no matter what I do memory clock has no effect on hash rate.

What could be wrong and any way to fix this? Do I need to overvolt GPU memory?

[Branko]

What ATI driver version, and what tool you use to increase memory speed?

[kemo6600]

What tool you used for Bios mod , probably your bios have two types of memory and the modding tool is modifying the wrong one so it is having zero effect .