is there any faster miner for grin and AMD then GGM?
have you tried any of the bminer builds?Does it support Grin with AMD (rx500 or vega series) cards? I think it says it supports AMD overall but not sure about grin?
I'm using GrinPro 1.1 through AwesomeMiner for 4 XFX - AMD Radeon RX 570 RS Black Edition 8GB GDDR5 PCI Express 3.0 Graphics Cards (RX-570P8DBDR) and I'm getting 6.4H/s at ~525W. I have a feeling that it can perform better but I can't figure out what's going on with these cards. I just installed them so I haven't flashed any bios or anything. I was actually reading that I didn't have to because it has the dual bios switch (handy.) But for ETH I'm only getting ~110MH/s for the four cards. So I'm guessing that 6.4H/s is going to be about as good as it's going to get.
What are your OC settings?
I'm at 1150/1950
My Rx480 8GB 1310/2000 - ~2g/s @ 100-110W
But you do not need to look for a dependence on the core/memory frequency and even more so to compare with ETH mining. Because the main indicator for Cuckoo Cycle algo is memory bandwidth (https://github.com/mimblewimble/grin/blob/master/doc/pow/pow.md). And the memory frequency is secondary (according to my observations).
For example, RX480 and 1070 have the same bandwidth 256 and the memory frequency 2000MHz (6Gbps), but the 1070 is more than twice is more hashrate (~4.6 g/s).