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.

Quote from: mshordja on May 31, 2017, 08:55:05 AM

need one advice better to get Sapphire RX570 Nitro+ 4GB or RX580 Nitro+ 4GB?
Both 4GB versions, the first one is 280Euros the second is 316 Euros. Who has this cards can give me an advise ?
Thanks

What are you mining? It still all depends on memory brand mostly... I prefer Samsung but you can't say which one use it.

i don't know what memory they will have, the rig with be build for ETH mining