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Messages - 2LTC

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Litecoin mining / 6 Card Build - R9280X
« on: November 29, 2013, 07:56:53 PM »
What all do I need to put together a 6 Card Build compiled of R9280Xs for LTC mining?

I had this together so far:
Six (6) XFX AMD Radeon R9 280X 3GB Cards @ 319.99 each
One(1) MSI Z77A-GD65 LGA1155 Z77 Motherboard
Two(2)Coolmax ZPS-1600B 1600W 80 PLUS Silver Power Supply w/ Active PFC -- OR -- LEPA G Series G1600-MA 1600W 80 PLUS Gold Power Supply???
Six (6) Powered 16X to 1X PCIe Riser with Molex Connector (
Six (6) PCI-E Express 16X Riser Cables (Looks like 16X to 16X -
One(1) Corsair Vengeance Blue 4GB RAM
One(1) Intel Celeron G1610 LGA 1155 Processor
One(1)Add2PSU device to make 2 PSUs work together

What else am I missing for this build? I assume I will put 2 cards directly into the mobo, use a 16X to 16X riser for the 3rd PCI-E slot and then use the 1X to 16X risers for the other 3 cards? Will I need to underclock the GPUs in the 1X slots so it doesn't burn up? I assume using the cards under the 1X-16X will mean they're not as efficient as the 16X-16X ones.

You should be able to get 4200-4500 kH/s out of this build. I don't see any issues with it, but I'm not an expert. I may be missing something.

I want to use this build, but I’ve read that each card (R9 280x) will generate 300Watts each, so they suggested 2x1600W PSU. Is this true?
[/color]And furthermore, let’s say I wanna do a 7xR9 280 rig using your base specs (Same mobo, CPU & RAM, only difference being 2 of your suggested PSUs and 7xR9 280s) what would I need to change?
[/color]I was going to get 6x AND 6x just in case. Is there anything else I must get? I also have two of those in my cart.[/font][/size]
[/color]So basically, I want to do a 7xR9 280x rig. Essentially in short, my question is: what *all* do I need to accomplish this?

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