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Compute4Cash · Feb 17, 2011, 07:30 AM

Yes, this is a difficult position to be in. If we explained enough for everyone to understand why we're being secretive then there wouldn't be any secret! The secret isn't our model - as you said, F@H, S@H, and countless others use this model. The secret is in what we're doing with the model and how we're using it to make money. That information is quite valuable, so it shouldn't be too hard to understand why we're not giving it away. Instead, by keeping it secret and using this distributed model we are able to allow other people to gain some from our idea while we guarantee that we will still be able to gain from it as well. This is a age-old business strategy.

Here are some profit calculations for those who are interested:

Estimated Stock Performance
6970 = 0.9 WU/hr, 250W
6870 = 0.6 WU/hr, 151W
5970 = 2.0 WU/hr, 300W
5870 = 0.8 WU/hr, 188W
5770 = 0.4 WU/hr, 108W
GTX580 = 0.4 WU/hr, 244W
GTX480 = 0.35 WU/hr, 250W
GTX285 = 0.2 WU/hr, 204W
GTX260 = 0.16 WU/hr, 182W

Assuming $0.15/kWh
Monthly profit calculation: WU/hr * 24h * 30days * $0.2/WU
Monthly cost calculation: TDP * 24h * 30d * $0.15/kWh

Calculations for all cards listed, using Feb. promo rate:

6970 = $103 net profit/month
6870 = $70 net profit/month
5970 = $255 net profit/month
5870 = $95 net profit/month
5770 = $46 net profit/month
GTX580 = $31 net profit/month
GTX480 = $23 net profit/month
GTX285 = $7 net profit/month
GTX260 = $3 net profit/month

All profits will roughly halve when after February when we return to the standard rate and nVidia cards pretty much all net a loss.

These calculations all neglect the motherboard/ram/cpu/hd power usage and they assume that you are not using the computer for anything other than Compute4Cash. If you are surfing the web, for example, then your GPU is already using about 1/3 of its TDP so you would only be increasing your power costs for using Compute4Cash in the background by about two thirds that of the figures provided here.

Also, if you live in a cold climate, the heat thrown off by these cards will heat your house and offset some of your heating bill. In warmer climates if you use A/C then obviously this will increase your cooling costs.

Feb 17, 2011, 07:30 AM	#99
Compute4Cash Join Date: Feb 2011 Posts: 16 (0.02/day) Thanks: 0 Thanked 12 Times in 6 Posts	Yes, this is a difficult position to be in. If we explained enough for everyone to understand why we're being secretive then there wouldn't be any secret! The secret isn't our model - as you said, F@H, S@H, and countless others use this model. The secret is in what we're doing with the model and how we're using it to make money. That information is quite valuable, so it shouldn't be too hard to understand why we're not giving it away. Instead, by keeping it secret and using this distributed model we are able to allow other people to gain some from our idea while we guarantee that we will still be able to gain from it as well. This is a age-old business strategy. Here are some profit calculations for those who are interested: Estimated Stock Performance 6970 = 0.9 WU/hr, 250W 6870 = 0.6 WU/hr, 151W 5970 = 2.0 WU/hr, 300W 5870 = 0.8 WU/hr, 188W 5770 = 0.4 WU/hr, 108W GTX580 = 0.4 WU/hr, 244W GTX480 = 0.35 WU/hr, 250W GTX285 = 0.2 WU/hr, 204W GTX260 = 0.16 WU/hr, 182W Assuming $0.15/kWh Monthly profit calculation: WU/hr * 24h * 30days * $0.2/WU Monthly cost calculation: TDP * 24h * 30d * $0.15/kWh Calculations for all cards listed, using Feb. promo rate: 6970 = $103 net profit/month 6870 = $70 net profit/month 5970 = $255 net profit/month 5870 = $95 net profit/month 5770 = $46 net profit/month GTX580 = $31 net profit/month GTX480 = $23 net profit/month GTX285 = $7 net profit/month GTX260 = $3 net profit/month All profits will roughly halve when after February when we return to the standard rate and nVidia cards pretty much all net a loss. These calculations all neglect the motherboard/ram/cpu/hd power usage and they assume that you are not using the computer for anything other than Compute4Cash. If you are surfing the web, for example, then your GPU is already using about 1/3 of its TDP so you would only be increasing your power costs for using Compute4Cash in the background by about two thirds that of the figures provided here. Also, if you live in a cold climate, the heat thrown off by these cards will heat your house and offset some of your heating bill. In warmer climates if you use A/C then obviously this will increase your cooling costs.