Quote from: fanatic26_ on March 07, 2019, 09:43:11 PM

its still a 5 series card, they sure as heck dont draw 200w just because of a few extra memory chips

I am curious why grin31 is being targeted when that is the ASIC friendly version of the algo, Grin29 is meant for GPUs

Why put out a product targeting an algo its not meant for? I am a bit confused by that.

From the mimblewimble github:

Grin POW Basics

Grin accepts 2 Proofs-of-Work. Both are variants of a concept called 'Cuckoo Cycle'.

CuckARoo (or ASIC Resistant) is intended to be mined by GPUs. It can be mined using a 6GB+ GPU.
CuckAToo (or ASIC Targeted) is intended to be mined by ASICs in the future. It can also be mined using 11GB+ GPUs.

While yes with 11gb GPUs its possible, but that still not what it was designed for.

Edit: And how will you support C32? That requires a minimum of 22gb of VRAM for its graphing from what I understand.

Takes a long time to understand Grin as by design, it tries to address many of the deficiencies of today's cryptocurrencies.

To answer your question of why mine c31 on a gpu, it's very simple ... ARBITRAGE! You point your GPU resources where it has the highest leverage or the highest potential returns ... which is exactly what GPU miners do jumping from algo to algo or coin to coin.

c31 has 2 operating modes, mean (big memory for GPU) and lean (smaller memory for ASIC's). The return on c31 (basic-friendly algo) is much higher than on c29 (asic resistant algo) because of the network hash rate. I remember it was 15x more hashing power on c29 than on c31 meaning there is less competition on c31 and therefore higher rewards.

What is particularly interesting is that the returns on c31 increase about 1% a week and the returns on c29 fall 1% a week. My conclusion after doing the math is that c29 will be unprofitable soon whereas c31 becomes more profitable.

The other point to note is that all the grin return calculators seem to be incorrect as they do not model the return dynamics over time and are simply ports of existing calculations using todays static return.