Quote from: amine30 on February 08, 2019, 11:22:04 AM

Hi all i have probleme with new version phoenix . With old version on all my r9 290 Trix i have 28 29 mh/s and now i have only 23 mh/s if a member have same probleme and he have resolve whrit here please . Thanks for your help .

The Hawaii (AMD 290/390) kernels in the latest version are actually even slightly faster in our testing. Unfortunately the 290/390 cards are also susceptible to the DAG-size related hashrate slowdown, so your hashrate will be quite a bit lower if you mine ETH or ETC, which both have DAG size approaching 3 GB. This has nothing to do with the amount of VRAM in the card but with other things (TLB size and page frame size), which can't be changed via the driver as with Polaris cards (4x0/5x0). You should try mining a coin with low DAG size (for example DBIX, Pirl, etc) and will see the same hashrate as before.

If you are not mining ETH or ETC and still seeing lower hashrate, please check the following:
- remove the -gt parameter to allow PhoenixMiner to find the new optimal -gt value (it can be different than before)
- check if the card is not overheating or if the power limit is not too low

Quote from: UnclWish on February 08, 2019, 11:14:53 AM

P.S. Phoenix, when we can wait 4.2 version?

A few weeks. We are waiting to be sure that Radeon VII kernels will work properly (the cards are still not here and won't be for another week), as well for some stability tests for the new hardware control features for AMD and Nvidia cards.

Quote from: camchimonline on February 10, 2019, 06:11:57 AM

What best driver for amd rx570 4gb?
Thank!

Avoid the latest drivers as they aren't properly supported by PhoenixMiner, otherwise there is not much difference between all 18.x.x drivers. We found 18.5.1 to be most stable for us.