Quote from: Vann on July 19, 2017, 09:46:45 PM

Quote from: pchampn on July 19, 2017, 09:14:15 PM

Quote from: Vann on July 19, 2017, 05:10:29 PM

Quote from: pchampn on July 19, 2017, 04:17:56 PM

Quote from: Vann on July 19, 2017, 04:13:05 PM

4 RX 480/580 + 1 RX 570:

Code:

ETH - Total Speed: 143.610 Mh/s, Total Shares: 256(49+56+50+49+57), Rejected: 0, Time: 01:58
ETH: GPU0 28.424 Mh/s, GPU1 28.932 Mh/s, GPU2 28.806 Mh/s, GPU3 28.796 Mh/s, GPU4 28.653 Mh/s
DCR - Total Speed: 4423.591 Mh/s, Total Shares: 814(188+177+158+165+126), Rejected: 7
DCR: GPU0 909.553 Mh/s, GPU1 925.824 Mh/s, GPU2 921.780 Mh/s, GPU3 921.458 Mh/s, GPU4 744.976 Mh/s
Incorrect ETH shares: GPU0 2, GPU2 1
1 minute average ETH total speed: 142.641 Mh/s
Pool switches: ETH - 0, DCR - 0
Current ETH share target: 0x0000000112e0be82 (diff: 4000MH), epoch 134(2.05GB) Current DCR share target: 0x000000002287a87d (diff: 31GH), block #152208

That's a real good hashrate! Have you modded your BIOS, etc. to achieve such hash rate? For my RX 580 and RX 570, I get hash rate of 22 Mh/s and 18 Mh/s.

Would appreciate if you can share some details. Thanks.

Yes, a simple strap mod using the Uber Mix v3.1 timings for the Samsung memory cards and the 1500 timing copied to the higher timings on the Hynix cards. That with 1150 MHz core clock and a 2050-2075 MHz memory clock with a -96 mV undervolt in Afterburner should get you to 28-29 MH/s with ~920 MH/s DCR for the RX 480/580 cards and ~740 MH/s with the RX 470/570 cards.

Thanks. Will try it @ home later today. Btw, while doing the BIOS mod, do you apply them one card at a time, i.e. disconnect all other cards in your rig? Or all other cards can be connected, but only make changes to one card at a time and then restart after applying the mod and patching it and then move to the next card.

Just want to make sure, what is the most stable way to mod the GPU BIOS.

If the cards are all exactly the same, then Atiflash will index up to 3 cards at a time. If the cards are different I would do them one at a time and remove all others to make sure you mod the right card. You can leave the cards on the riser to do the Bios mod. After you mod the cards, you will be prompted to restart. Lots of videos on youtube and guides online on how to do it. If you use Windows, after you mod the Bios you may need to use the pixel patcher to disable the Bios signature check, otherwise you will get a code 43 GPU error in Device Manager.

https://www.youtube.com/watch?v=IAiScXPisAY

That helps, thanks a lot!

One more question, for 4 GB RX 470/480/570/580 cards, I should copy 1500 timing and for 8 GB cards, it should be 1750 timings. Is that correct? I noticed that you mentioned for Hynix cards, copy 1500 timing instead, were you referring to 4 GB cards or that also applies for 8 GB cards with Hynix memory?

pchampn

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