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How to make my Mining computer work

Tags:
  • Power Supplies
  • Components
  • Computers
  • mining
  • pcie
  • dogecoin
  • molex
  • Graphics Cards
Last response: in Components
April 6, 2014 5:43:35 PM

I am going to be building a computer for mining. So far I have chosen these parts:

ASRock H81 Pro BTC Motherboard
Intel Core i3-4130T 2.9GHz Dual-Core Processor
Corsair Vengeance 4GB (1 x 4GB) DDR3-1600 Memory
Western Digital Caviar Blue 160GB 3.5" 7200RPM Internal Hard Drive
3x MSI Radeon R9 270 2GB Video Card
Corsair CX 750W 80+ Bronze Certified Semi-Modular ATX Power Supply
Hannspree HL163ABB 60Hz 15.6" Monitor
TP-Link TL-WN725N 802.11b/g/n USB 2.0 Wi-Fi Adapter
2x Masscool FD12025B1H3/4 81.0 CFM 120mm Fan
Logitech MK120 Wired Slim Keyboard w/Optical Mouse
Crates for a case
Power button
*********Need to choose PCIe risers (not sure if I should get powered or not)

I am not entirely sure if I should use powered risers but I do plan to add more R9 270's in the future (maybe 6 eventually)

Also I would need 2 power supplies if I got to that. How would I connect two power supplies to this system to prevent any short circuits or other issues. The motherboard requires that 2 molex connectors are plugged in to the 2 molex connectors on the motherboard. These are used to give extra power to the power supplies. I will need risers for all of the video cards I use. Am I going to need powered risers if the motherboard already has extra power connectors and each video card has a 6 or 8 pin PCIe power connector?

Also if I choose to add a second PSU for my future R9 270's how would I connect it? I already have this:

With 1 PSU I connect everything properly.

2 molex to the 2 on the motherboard
molex connectors to the PCIe risers (if I get powered risers)
PCIe power connectors to the video cards.

If I add a second power supply using add2psu or something like it then how would I connect power to the other 3 video cards (if I add them)? Would I simply just plug in the molex connectors on the second power supply or would that cause a short circuit?

What I'm saying is that if I have 1 PSU and powered risers with 3 video cards should it look like this?



And if I have 2 PSUs and powered risers with 6 video cards should it look like this?


More about : make mining computer work

Best solution

April 6, 2014 5:53:48 PM

What are you mining?
Bitcoins?
I know this isn't what you are asking but mining Bitcoins with GPU's is not very effective anymore, and barley profitable, if at all. If you haven't bought stuff already, get an ASIC Miner,
http://avalon-asics.com/
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April 7, 2014 11:45:04 AM

ilovepats2000 said:
What are you mining?
Bitcoins?
I know this isn't what you are asking but mining Bitcoins with GPU's is not very effective anymore, and barley profitable, if at all. If you haven't bought stuff already, get an ASIC Miner,
http://avalon-asics.com/


I am not going to mine Bitcoin. It's not efficient. I'll be mining Dogecoin. I can get $500-$1000 per year. I just want to understand this power supply problem before I do it because I don't want to ruin my components. I plan to add more video cards in the future and that means I will need another PSU.
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