On dual PoW, Graph rates, gps, and Difficulty

The 2080Ti are already enjoying their premium on C31. As this post https://forum.grin.mw/t/what-to-mine-choosing-between-cuckatoo31-and-cuckaroo29 explains, their premium amounts to

(GPS31 * weight(31)) / (GPS29 * ar_scale)

and as long as ar_scale is dropping, their premium is increasing further.

You can’t mine cuckatoo31 in less than 11 GB with current miners.

I understand that, but the outcome of C31 is still fairly low compare with what’s in theory.

Does the C31 premium apply when mining in a pool or the pools weigh the shares in a way that neutralizes it?

I believe that depends entirely on the pool operator. Great question that one should ask before attaching oneself as a C31+ miner to a pool.

So how about this miner? https://forum.grin.mw/t/miner-for-amd-nvidia-4g-6g-8g-10g-gpu-from-minerbabe/2184

They shows some performance for 1070 and other 8 Gb cards on C31.

Right, so let’s speak about the grinmint, mwgrinpool and grin-pool. I think these pools are the most open and the people behind them did a lot for the community. @quentinlesceller @bladedoyle @hendi, can you tell something about it?

my rig has 11.111887183910236GPS when mining C31, but the outcome is way lower than mining C29.

Which pool do you use?

tried with both f2pool and grinmint

Grin-Miner 1080ti card
Grin-Miner results is 4,1 GPS but pools statistic is 2,75 GPS
Grin-Miner results is 0,5 GPS but pools statistic is 0,33 GPS
Anybody has that problem?

yep, try to change the pool. I believe that MWGrinPool is better for C31 algo, Grinmint is better for C29 algo. At least the hashrate numbers at the pool side looks more reliable.

in my case, both Grinmint and MWGrinpool statistics are lower then miner hashrate. That is only for Linux Grin-Miner with 1080ti rig

Are you all using RTX 2080Ti or 1080 Ti for C31 ?
Has anzone tried AMD Radeon Pro or the NVIDIA quadro cards (p5000 p6000) ?

Is there a page that we can see difficulty history and current statistics else from this one https://grin-pool.org/what-to-mine/ etc? Sorry I searched first but came to nothing.

@Fredrik, I normally use www.coinmarketcap.com but they just started tracking grin so you will need to add 2 weeks of data. Refer to https://grinexplorer.net/ in the meantime,

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Don’t use the workstation cards unless you have money to burn.

If you are looking for AMD cards, I would suggest the following:

  1. Sapphire RX570 16gb $399 (~0.45gps CT31)
  2. AMD or Sapphire Radeon VII $699 (~1gps CT31)

Radeon VII will be in very short supply but Vega 64 16gb offers similar performance because it has 4 more CU.

@Grinorovitch, where is info about VII performance and info about Vega64 16G? thx

@valarray, my 1gps estimate is based on results from a Vega FE which is basically the same as Vega 64. Radeon VII will be using a faster clock but has 4 less CU. Also note that 16gb has better solving fidelity than 11gb so the 1gps is normalized to 1.4 gps when comparing to nvidia 11gb or you can derate nvida=ia by 30% to compare apples to apples.

Ask me next week when I run it on a real R7. the real challenge is to get your hands on enough Radeon VII’s. It’s a built by AMD board so supply is very limited.

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Im thinking about starting with RX570 s. But Will change to Radeon VII s. 1 per card is fat. Have you heard when pre orders of them starts? Will start to harazz sapphire this week.