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Im planing to set up a small energy efficient mining rig, im planing to use a low power CPU/MOBO bundle, this is my favorite: Biostar A68I-350 (with 1 DIMM DDR3 4Gb)

It takes only 18W TDP and has one PCI-E 16x for a HD7950. The total Wattage is (considering the usage of a 80+ GOLD PSU) lower than 300< Watt. The KHash/s rate will be 640-650.

How much can the CPU be the cause of a BottleNeck?

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  • Is this some kind of quest? What's the objective?
    – Art Shayderov
    Commented Feb 13, 2014 at 17:22
  • If you want to set a record for a one-card setup, find a card with high ASIC quality - they are good for heavy undervolting. I have one with 88 - works 1010 on 0.95V
    – Art Shayderov
    Commented Feb 13, 2014 at 17:28

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The cpu is not used while mining and thus should not bottleneck your setup. The only impact that I could see would be bootup times, and it shouldn't be significant.

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