Quote from: Vann on June 29, 2017, 12:07:20 PM

Quote from: Golfmad on June 29, 2017, 11:13:58 AM

Quote from: Vann on June 29, 2017, 10:37:33 AM

Quote from: Golfmad on June 29, 2017, 10:28:59 AM

Quote from: Vann on June 29, 2017, 10:25:32 AM

That's correct, you need to patch the driver with the pixel patcher to bypass the signature check with a modded bios. Once the card shows up in Device Manager without errors, you can overclock and undervot it using Afterburner before starting the miner. Somewhere around 1150 MHz for the core clock and 2075 MHz for the memory clock with a -98 mV undervolt should get you to 28 MH/s.

Hi, the only driver install that I have done is to install the latest AMD driver a couple of days ago when building the rig. After this I had modded the card and the patcher works so that I can see the card but still no change in the hash rate. Do I need to reinstall the drivers for each card when I mod it?

If you have cards with a modded Bios, you need to use the pixel patcher any time there is a driver update, after adding a card or changing the Bios. If the card is still not recognized in Device Manager, uninstall the drivers in safe mode using DDU, reinstall the driver and apply the pixel patcher.

Ok still no luck and here is exactly what I have done. I have 2 cards installed so I can compare.

1. Downloaded mod from here https://anorak.tech/c/downloads/sapphire
2. Flashed 1 card bios with the rom.
3. Used DDU to remove the drivers.
4. Installed latest AMD Drivers.
5. Used the patcher to patch the AMD driver.
6. Restarted the machine and the card with the mod is accepted.
7. Opened Claymore miner and still showing both cards at 22mhs.

I have even tweaked the settings with Afterburner and the hash rate goes down!

Sad

Really frustrating.

Using a modded rom from someone else is not a good idea. It's always safest to do the Bios patch yourself using your original Bios. That way you know the Bios came from the card and is not renamed wrong or incompatible with the card. If you saved the original Bios, which you should always do, mod the original after you save a copy using this guide depending on the memory type the card has:

http://1stminingrig.com/sapphire-rx-470-nitro-oc-4gb-bios-flash-mod-tutorial-hynix-elpida-samsung-micron/

Thanks yeah I've tried doing them myself and using an already modded file. Wonder if I would be quicker doing the hashing myself with pen and paper