5 270X graphics cards, but which MB and CPU?

leorapture

Honorable
Jan 31, 2014
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I do not want to make a mistake in ordering the right parts for my new rig. But, I have a budget of $2000, and I plan on getting 5 of these:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814202047

Now, since most of my budget will be eaten up after the purchase of these cards, I have $650 left for a motherboard, processor, hard drive, and power supply.

Can someone please recommend a solution to staying within the budget, and effectively be running all 5 of these cards. Of course, I'm going for stability, and won't be overclocking most likely.

I plan on using this rig for mining crypto.

Cheers, everyone!

P.S. this is my first post, be gentle :)
 


That's a thought. So saying I just went with 3 of these,

http://www.newegg.com/Product/Product.aspx?Item=N82E16814121803

Where does that leave me? Still about 600-650 left for the rest of everything. And regarding the case, i'm going to use an open frame case, like this one:

http://www.ebay.com/itm/Aluminum-Open-Air-Scrypt-Mining-Rig-Frame-litecoin-dogecoin-feathercoin-etc-/281255019425?pt=US_Computer_Cases&hash=item417c1b03a1

So I figure I could hook two directly to the MB, and mount one above with a pci riser cable
 
OK, first of all, let's see which solution mines more coins... We are talking about litecoins, right? If you want Bitcoins, forget it, you can't use a desktop to compete with specialized Bitcoin mining hardware.

https://litecoin.info/Mining_hardware_comparison
R9 270X gets 400 kH/s
R9 280X gets 600 kH/s
R9 290X gets 900 kH/s
(I rounded all numbers to make it easier)

You could have 5x270x for a total of 2000, or 3*280x for a total of 1800, or 2*290x also for 1800 kH/s.

You could try this for example:

CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($219.99 @ Newegg) - or maybe a cheaper CPU
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ OutletPC) - or just use the stock cooler
Motherboard: Asus Z87-PLUS ATX LGA1150 Motherboard ($158.98 @ OutletPC) - or Z87-A
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory ($84.99 @ Newegg)
Storage: Samsung 840 EVO 250GB 2.5" Solid State Disk ($159.00 @ Amazon) - or the cheaper 128GB version
Storage: Western Digital Caviar Black 2TB 3.5" 7200RPM Internal Hard Drive ($148.98 @ OutletPC) - if necessary
Video Card: Sapphire Radeon R9 290X 4GB Video Card (2-Way CrossFire) ($656.13 @ Newegg)
Video Card: Sapphire Radeon R9 290X 4GB Video Card (2-Way CrossFire) ($656.13 @ Newegg)
Power Supply: XFX ProSeries 1050W 80+ Gold Certified Fully-Modular ATX Power Supply ($189.99 @ NCIX US)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ OutletPC)

 


I guess that the AMD cards work better for mining, or so I've heard. So, I think I'm going to go with a mixture of 270X cards, and a couple 280X cards. 5 total. This MB:

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131980

this CPU:

http://www.newegg.com/Product/Product.aspx?Item=N82E16819116899
 


Cryptocurrency mining.