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Author Topic: Best Tri-Card Motherboard?  (Read 2701 times)
DeathAndTaxes
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Gerald Davis


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March 08, 2012, 06:24:15 PM
 #21

I'm still wondering though how you make these rigs profitable with all of the expensive equipment you're using.

What expensive equipment?  Motherboard is tiny part of system cost.

3x5970s $350 ea                                   (yeah you can't get them at this price anymore)
Motherboard tray w/ expansion slots: $40  (easier that building a custom frame w/ extenders)
MSI 890FXA-GD70: $180
Sempron 145: $20
2GB of RAM: $10
USB Stick: $5
Linux: $0
1200W 80-Plus Gold PSU: $250  (sometimes less need to spot sales & deals)
Total: $1500 for 2.2 GH/s.

Buying el cheapo motherboard would have saved what $60? minus extender so maybe $50 on 2.2 GH/s rig.  Thats $0.02 per MH/s.

If $0.02 per MH/s is the difference between profits and losses well you got problems.

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