Quote from: adaseb on June 04, 2019, 05:38:29 AM

Quote from: Lunga Chung on June 03, 2019, 01:07:35 PM

Quote from: adaseb on June 03, 2019, 07:34:55 AM

Quote from: Er0l on June 02, 2019, 07:10:25 PM

Quote from: FFI2013 on June 02, 2019, 12:53:30 PM

Quote from: adaseb on June 02, 2019, 04:59:22 AM

Quote from: deksa on May 31, 2019, 08:49:38 PM

I have Sapphire Pulse RX 570 4GB Hynix/Elpida.
Using HiveOS with 1150 Core, 2200 Mem, 950mv, (rxboost 30, 55, 75, 100).
Tried everything, 10 different BIOS mods, I even made one click timing patch with Polaris, tried windows (compute mode) hashrate is 26.6 and that is it!
That happens on 4 same model cards, same settings. I bought them used. The guy that sold them said that he was getting around 30 mhs (before this new version of claymore) with that same BIOS.
Please someone help me.
Thanks!

Your 4GB Hynix ram can't handle 2200Mhz of memory clock, the max you can do with the 4GB is 2000Mhz and for many that leads to errors. Some of my 4GB can only run at 1950Mhz even.

Try 2000Mhz and it should be stable and you should get 28.75Mh/s or so. If you get any hardware errors or stability issues then you need to try either 1950 or 1900Mhz. You won't ever get stable at 2200Mhz using 4GB of memory. The 8GB were the only cards which can support memory clocks that high.

Exactly I can't get my rx470 4gb past 1900 or 1925 my 570's are 1950-1975

Thats your straps are too tight.
Need loose straps, i run all my gpus rx470 2150+ without errors

Can you post your straps so I can test. I haven't modified my straps probably since 2017 but 2 years ago I remember I tried different straps and bios's and its not possible to run most cards past 2000mhz, even 1950mhz was the max for some.

Sometimes I tried a weird strap where it ran at 2050 or 2100mhz memory however it usually ended up causing a system hang a few hours later. And to save myself hassle I just ran them at 1950 or 2000Mhz whichever was most stable and didn't get massive hardware errors.

You can loosen your straps via amdtweak tool

Here is an example for 8gb cards

--REF 10 --RC 70 --RFC 157 (from PBE 1.6.7: REF 5, RC 65, RFC 136)
mclock 2145-2185 (from 2085-2145)

This is samsung, but the logic is the same try getting RC and RFC values higher and you'l be able to OC on a higher clock (REF is just a rxboost).

Run a test for some time an confirm that values are fine, after that you can create your own strap and bios mod directly your cards

This is where it makes sense now. It seems you want to run your memory at 2185Mhz but your memory is 8GB. I was referring to the poster who tried to run his 4GB memory at 2200Mhz which is not possible.

The RX 470/570 and RX 480/580 if it has 4GB of GDDR you can't run it at 2200Mhz whether Hynix or Samsung.

The RX 470/570/480/580 8GB you can usually run at 2100-2200Mhz or so without issues and get something like 31MH/s.

Here is some info about my settings:

https://prnt.sc/nxbu7l

http://prntscr.com/nxbrbo

http://prntscr.com/nxbrp6

Cards 0 Micron, card 3 Elpida, rest of them are Hynix.