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Hi all, This is going to be one mess of a post as it will reflect what is going on in my head. What I am trying to do is get this worked out so I can have the lowest energy usage. I know some of the parts that I have are not the best but, this is what I have on hand.

GPU
2x 5770     (240w)   (360mhs)
7x 5830     (980w)   (2310mhs)
16x 5850      (2500w)  (5760mhs)
1x 5970     (300w)    (800mhs)

PSU
1x 650w
4x 700w
1x 800w
2x 850w

all bronze 80+ coolmaster


CPU
1x 555
5x 955
2x i3 2120


Motherboard

2x msi p67a-gd80   (3x 16pci 2x 1pci)
4x msi 870a-g46   (2x 16pci 1x 1pci)
1x asus m4a79xtd evo  (2x 16pci 2x 1pci)
1x giabyte ga880ga-ud3h  (2x 16pci 2x 1pci)

i have extender cables for the 1xpci and 6 for the 16 pci



Now, since the price has collapsed and the difficulty does not look like its going down (much) I need to get a better idea on what I have here and see if it is wroth putting all together.  i am okay to wait a year or so if i am at the break even level now.


My electrical cost after tax is 13.7 cents.

Using the data at this site http://benchmarkreviews.com/index.php?option=com_content&task=view&id=706&Itemid=72&limit=1&limitstart=16 It seems my total wat usage will be around 4000w just for the cards. This is a guess as I will be overclocking the cards core to whatever I can and underclocking the memory to 300mhz.

my total output will be around 9200 mhs/S assuming i get 180 for the 5770, 330 for the 5830, 360 for the 5850 and 800 for the 5970.

I know that I have electrical costs with the mainboards and the cpus and what not. how significant will this be?


If I assume the next difficulty will be 1,300,000 and the price will be $2.5 and I get 9200 mhs/S I will bring in $540 a month. My costs for electric for just the cards will be $548 If I did all of this right.

I am thinking that there will be no way I can mine and break even at this point. I am however hopeful that it will go up in the future.

I assume that I will be able to have the 2x msi p67a-gd80 motherboards have 5 cards each?  (1x 5850 3x 5830 and 1x 5770) and for the second (1x 5850 and 4x5830)

The 1x asus m4a79xtd evo  (2x 16pci 2x 1pci) and 1x giabyte ga880ga-ud3h  (2x 16pci 2x 1pci)  can do 4 each?

And then only use 2 of the 4x msi 870a-g46   (2x 16pci 1x 1pci) with 3 each.

I will have one card left over and two rigs but its the best way to do it right?   What will my added electric costs be if I do it this way?



Sorry for all the questions and thoughts but this is where my head is right now. If anyone can follow any of this all ideas and questions are welcomed. Also my numbers might just be way off cuz I dont really know what I'm doing so please point that out too, haha! Thanks:)

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