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Topic: PC build for altcoins GPU mining - page 2. (Read 2031 times)

newbie
Activity: 10
Merit: 4
November 03, 2016, 03:33:49 AM
#3
Quote from: limbaugh link=topic=1669111.msg16758512#msg16758512
Are you wanting to know how much you will lose by entering the mining game? Don't bother. Unless you have "free" power.

Please correct me if I wrong but for 600w power supply the monthly cost will be ~$50 (cost of electricity is 12 cents per Kilo-Watt hour in my area).

Quote
Given the cost of electricity to be 12 cents per Kilo-Watt hour, the cost to run the PC 24/7 under the Average Power Consumption is:
(0.530 KW * 720 hours * 12 cents per KW/h) = 4579.2 cents = $45.79 / month!
The cost to run the PC 24/7 under the Reasonable Load Power Consumption is:
(0.636 KW * 720 hours * 12 cents per KW/h) = 5495 cents = $54.95 / month!

(Calculations from site http://www.overclockers.com/how-much-does-it-cost-to-run-your-pc/ )

So my break even point is ~$1.5 per day, but currently I make ~$5 per day with my gtx970 so it's profitable rigth?
legendary
Activity: 1311
Merit: 1000
November 02, 2016, 06:33:03 PM
#2
How to calculate power consumption for these GPUs? And how to calculate CPU "demand" for each GPU?

Are you wanting to know how much you will lose by entering the mining game? Don't bother. Unless you have "free" power.
newbie
Activity: 10
Merit: 4
November 02, 2016, 06:28:06 PM
#1
(dear mod, I hope this is good forum for this topic - if not - please move)

Hi, I use my main computer for mining, I use NiceHash Miner software and I mine ~37Sols/s (i7 + gtx970). After few days of mining I'm ready to invest some mBTC or $$$ to build PC dedicated for mining.

I dont need case/screen/mouse/keyboard, I will buy cheap 4gb DDR ram and cheap HDD.

My biggest concerns are about motherboard, power supply, CPU and GPU.

I don't want to risk big amount of money ( $200-250 ), so for the beginning I'd like to buy cheap motherboard with 4 PCIe slots, and one GPU, and PS and CPU.
motherboard Asus H81M-Plus - $50, 1 x PCI Express x16, 3 x PCI Express 2.0 x1, chipset LGA 1150 (so i3/i5/i7)
power supply opengate 600W - $25 , or I can buy two opengate 400W $15 each - what do you think?
CPU - here I don't know if i5 is enough for 4 GPUs? or should I expect that CPU will be a bottleneck in this build and it's better to spend more on i7 ?
GPU - I found on ebay used gtx970 for $100 and I think that solid 25Sols/s for this price is a good deal - or do you think that AMD is better?


So what do you think about this build? Is that motherboard good for 4 GPUs? How to calculate power consumption for these GPUs? And how to calculate CPU "demand" for each GPU?
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