sjbs
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I had some more time again today to run some numbers regarding the selection of GPU's and other parts (PSU which is one one of the most critical aspects).
I also had numerous requests during the week to change or update something on my previous sheet... thus this time around I'm making my calcs available to all. It should at least give you some idea of what to look at when doing evaluations, and if the parameters are not important to you, just set them equal to zero.
What I did find interesting is that the Nvidia cards (1070, 1080 even 1080ti) did a lot better than I thought, and the 470/580 worse. Just because I took into consideration the mining machine capital and maintenance costs....
Any case, it makes for some real food for thought. Just remember, as a lot of you also correctly stated: the calcs are based on the assumptions, if you change that, you'll most likely get other results.
May I please just ask that if you find calc errors, please let me know.
Here is the link to the Google Sheets of sJBs Mining ROI Evaluation to try out yourself
I also had numerous requests during the week to change or update something on my previous sheet... thus this time around I'm making my calcs available to all. It should at least give you some idea of what to look at when doing evaluations, and if the parameters are not important to you, just set them equal to zero.
What I did find interesting is that the Nvidia cards (1070, 1080 even 1080ti) did a lot better than I thought, and the 470/580 worse. Just because I took into consideration the mining machine capital and maintenance costs....
Any case, it makes for some real food for thought. Just remember, as a lot of you also correctly stated: the calcs are based on the assumptions, if you change that, you'll most likely get other results.
May I please just ask that if you find calc errors, please let me know.
Here is the link to the Google Sheets of sJBs Mining ROI Evaluation to try out yourself
GPU | Mining Rate | Mining Rate | New Cost | Buying Carbs Cost | Selling Carbs Cost | GPU Power Usage | Number of GPU's to be Installed per Motherboard | Recommended PSU | Actual PSU Selected | Investment | Profit After 1st Year | % Return on Investment after 1 year | Payback Days |
$ per Day | R per Day | Rand | Rand | Rand | Watt | ||||||||
780 | $1.00 | R 13.63 | R4 000 | R2 500 | R2 500 | 200 | 3 | 850 | 850 | R4 000 | -R9 471 | -236.77% | 1084 |
780TI | $1.10 | R 14.99 | R5 000 | R3 000 | R3 000 | 250 | 3 | 1000 | 1000 | R5 000 | -R10 287 | -205.74% | 1084 |
Titan | $1.40 | R 19.08 | R6 000 | R4 500 | R4 500 | 300 | 3 | 1150 | 1150 | R6 000 | -R10 108 | -168.47% | 1084 |
GTX 960 | $1.17 | R 15.90 | R2 200 | R2 000 | R2 000 | 100 | 7 | 950 | 950 | R2 200 | -R 802 | -36.47% | 1084 |
GTX 970 | $1.95 | R 26.58 | R4 899 | R2 700 | R2 700 | 150 | 6 | 1150 | 1150 | R4 899 | R 785 | 16.02% | 827 |
GTX 980 | $2.12 | R 28.90 | R9 800 | R4 000 | R4 000 | 220 | 4 | 1150 | 1150 | R9 800 | -R3 229 | -32.95% | 1084 |
GTX 980TI | $3.07 | R 41.84 | R9 500 | R5 000 | R5 000 | 250 | 3 | 1000 | 1000 | R9 500 | -R1 386 | -14.59% | 1084 |
GTX Titan X | $3.20 | R 43.62 | R10 000 | R6 500 | R6 500 | 300 | 3 | 1150 | 1150 | R10 000 | -R1 953 | -19.53% | 1084 |
GTX 1060-3GB | $1.75 | R 23.85 | R3 299 | R2 900 | R2 900 | 100 | 7 | 950 | 950 | R3 299 | R1 880 | 56.99% | 116 |
GTX 1060-6GB | $1.89 | R 25.76 | R4 199 | R3 500 | R3 500 | 100 | 7 | 950 | 950 | R4 199 | R2 397 | 57.07% | 136 |
GTX 1070 | $3.07 | R 41.84 | R6 299 | R5 500 | R5 500 | 150 | 6 | 1150 | 1150 | R6 299 | R6 077 | 96.47% | 63 |
GTX 1080 | $3.77 | R 51.39 | R7 999 | R7 000 | R7 000 | 180 | 5 | 1150 | 1150 | R7 999 | R7 632 | 95.41% | 62 |
GTX 1080TI | $4.61 | R 62.83 | R10 000 | R10 000 | R10 000 | 250 | 3 | 1000 | 1000 | R10 000 | R6 175 | 61.75% | 29 |
GTX Titan Xp | $5.00 | R 68.15 | R12 999 | R11 000 | R11 000 | 300 | 3 | 1150 | 1150 | R12 999 | R6 402 | 49.25% | 141 |
Radeon RX470-4GB | $1.75 | R 23.85 | R3 099 | R2 600 | R2 600 | 120 | 7 | 1100 | 1100 | R3 099 | R1 468 | 47.37% | 176 |
Radeon RX470-8GB | $1.85 | R 25.22 | R4 149 | R2 800 | R2 800 | 130 | 7 | 1200 | 1200 | R4 149 | R1 514 | 36.48% | 383 |
Radeon RX480-4GB | $1.90 | R 25.90 | R3 698 | R3 000 | R3 000 | 160 | 5 | 1050 | 1050 | R3 698 | -R 366 | -9.89% | 1000 |
Radeon RX480-8GB | $2.06 | R 28.08 | R4 200 | R3 500 | R3 500 | 160 | 5 | 1050 | 1050 | R4 200 | R 330 | 7.86% | 786 |