I'm thinking of selling my now 2 gen old GPUs. I checked sold listing on eBay as of yesterday and averaged the selling prices for the last few days.
It looks like the going rates are better than I thought. (I would never pay the below prices myself) Here's a breakdown of what I have that combined does around 2,100 MH/s on ETH:
25 1080Ti @ $380 = $9,500
1 1080 @ $300 = $300
14 1070Ti @ $260 = $3,640
16 1070 @ $194 = $3,104
So a grand total of $16,544 less eBay 10% = $14,890. But a more realistic net is probably around $10k
2,100 MH/s is about 23 3080 GPUs (assuming 90 MH/s) @ $699 = $16,077
My current mix of 1000 series cards consume right around 8,000 watts
23 3080's would drop that almost in half to 4,600 watts (assuming 200 watts per GPU)
I guess another option would be to pickup 40 5700s @ $350 = $14,000
The 5700s would consume 5,200 watts (assuming 130 watts per GPU)
My power is essentially free since I have 50kW worth of solar panels that produce enough kWh to keep the mining rigs running 24/7.
Dump my 1000 series cards while they still have some value, or just keep mining with them until they die? What would you do?
free power means you need to have the highest hashrate as possible.
x2 of your current hash rate is x2 profit
the earlier you start mining with newer cards the earlier they ROI.
keep them (old cards) running while adding newer cards, as you reach the maximum electrical capacity sell the older cards- preferably during ETH pumps like if it pumps to 500, buyers will appear hehe.
will not recommend cards since 3080 is not out yet and we have not seen more info about it. besides running those many gpus i believe you already have an insight for your next ideal setup.