Quote from: philipma1957 on July 17, 2017, 03:35:27 AM

Quote from: oblox on July 17, 2017, 03:19:44 AM

Quote from: Metroid on July 16, 2017, 03:25:03 PM

Quote from: Vann on July 16, 2017, 05:58:55 AM

That's still a ROI of 10 months for cards bought at $250

Your calculation is based on gpu only, system is expensive, you need to put the system cost too, motherboard around $150, psu around $200, ssd around $80, cpu around $40, memory 8GB around $80, total system cost without gpu around $550 and that is average price of a system, most countries you pay 50% more on the $550 value. Which means $800 without any gpu, now you place 5 gpus which is also standard per motherboard, your roi is not 5 gpus, is 8 gpus cause of the system cost, $800 is 3 gpus based on your $250. So total to roi is $2000 plus electricity is around $0.20, now let's see, profit per day is $3.40, $2000 divided per $3.40 = 590 days to roi, that is almost 2 years.

You're way overbuilding the base rig...

100 for a mobo
130 for a psu
30 for a usb stick
50 for a cpu
10 for 1 riser
50 for ram

360 for a 4 card build

the build will last 3 gpu upgrades about 3 years if you do not overclock like made.

360 + 1600 for 4 1070's = 1960 for about 1700 sols that gives about 8 dollars power at 10 cents is 1.20 so 6.80 net x 300 days = 2040 so 10 months or so

That is the price in the US. In Europe or China, the price is 50% higher at least.