Quote from: Mattthev on May 31, 2017, 09:36:09 AM

Quote from: RobertD on May 31, 2017, 08:59:51 AM

Quote from: freak1 on May 30, 2017, 08:19:30 AM

I have the SAPPHIRE PULSE RX 580 8GB HYNIX.

I modded the bios copying the 0:1750 string to 0:2000 and 0:2250, this gives me 25,5 m/h, and 27 with core at 1100 mem at 2150 and vcore at -96 and powerlimit at +30. i found this http://1stminingrig.com/best-bios-rom-for-sapphire-pulse-rx-580-8gb-oc-hynix-memory-30-mhs/ but my firmware is 256kb and has different timings, mine does not have 1:x og 2:x so i can't use it. Any suggestions to getting this to 30m/h?

These cards are strange. I've tried using 1500 straps and running them at 1250/1800 for 25.5mhs. The 1750 strap allow the mem to clocked at 2050+ but still give only 25.5mhs.
I've also tried playing with the powertune settings in the bios, rasing tdp/tdc/max powerlimit/small powerlimit with no effect on hashrate.

It's all about timings... those basic copies straps aren't fastest.

The funny thing is that my MSI 470 Gaming X and Sapphire 470 Nitro+ with Hynix can mine at 29-30mhs, but the same strap on the Sapphire 580 8g pulse only run do 25.5mhs, even at the same clock speed 1250/2050.

RobertD

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