i use rx 570 with driver "Adrenalin Edition" 18.5.1.
We have retested RX570 under both older and latest AMD Windows drivers and there is no performance decrease between 4.2c and 4.5b. Please check if your cards are throttling (use
-hstats 2 as explained in our previous post) because 4.5b enforces the
-tt, and
-fanmax parameters more strictly than 4.2c. Also, don't use -mt if you have modded your cards or are using other means to change the memory timings.
@PhoenixMiner
Are you planning to add memory straps/timings for Nvidia cards?
I don't like claymore (compared to yours)
but was forced to switch because of nvidia memory timings (gives a lot more of hash rate)
(which is a big advantage)
We are considering this for the next release but there are some concerns with long-term stability and (probably not very likely) possible DRAM overheating with these aggressive timings.
I have the same hashrate, which is on 4.2c, which is on 4.5b, but on drivers version 18.6.1
On version 19.7.1, the speed is 20-30 hashes lower
If you are getting lower hashrate from 4.5b on drivers ver. 19.7.1, you definitely need to rerun auto-tuning (press
z in the miner console or run the miner without the -gt option). 4.2c doesn't support the most optimized kernels on drivers 19.7.1, and its optimal -gt values are very different than these of the optimized kernels.
I keep seeing everyone mentioning 4.5b, yet I don't see the link on this forum. I am going
to assume it is not a legit release?
It is a beta version but it is legit. We don't put it in the first post to keep it clear that it is not the stable release yet. You can find the relevant post here:
https://bitcointalk.org/index.php?topic=2647654.msg51874428#msg51874428@phoenix correct me if I'm wrong but isn't 5700 already limited with memory bandwidth and theoreticall speed for them is 37mhs for non xt and 50mhs for 5700xt?
No, both 5700 and 5700 XT could do about 50 MH/s without the TLB entry count/page size problem. That much is certain from our tests. Why exactly there is such limitation is just a wild speculation on our part as well as when (or if) it will be removed.
...
With the current no-so-great mining profitability, they really didn't have to do this but it's absolutely their choice, and with the current prices of Polaris, it is still one of the best cards for ethash mining. If the Navi cards weren't locked down, they would achieve hashrate in the 50 MH/s ballpark. We are still working on some kind of workaround but it doesn't look good at this moment.
All those limitations can be worked around in linux easily if thats the only issue preventing ethash from working properly.
Hope so but it may not be that simple. It is not that hard to implement practically unbreakable scheme where the GPU can be "unlocked" only if you know the right keys. Once again the whole thing is wild speculation on our part based mainly on the fact that it seems very implausible no one in AMD tested the Navi in ethash given than this is one of the main applications of their GPUs.
@PhoenixMiner,
Need some help here to fix this issue I'm having... See below
Windows 10
Awesome Miner used to run / control the miner.
Latest drivers for Nvidia installed
RTX 2080 FE << Will not mine ... see log below for the NVRTC error.
EVGA 1070Ti << Mines fine when selected on it's own (GPUS 2 option).
Looking forward to some info on what's wrong here.
...
Thank you for reporting this! Thanks to the detailed info and the log, we were able to reproduce the problem and it will be fixed in the 4.5c, which will be ready in a few days.