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April 21, 2013, 03:38:12 PM |
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Although not an exact match (so you might just disregard this) i recently purchased 2x HIS 7950 3GB IceQ2's. The are both OC'd to 1150MHz Core. In crossfire, both cards average 570-595 MH/s. That's at stock voltage with a +20% power limit (MSI Afterburner). Could OC further as they haven't topped 78c at any point yet but i'm hesitant to run at 99% load fully OC'd for any long duration. (Just for reference, at 1200MHz both cards are over 600MH/s)
I've averaged 1.15-1.19GH/s total and enter eligus' payout pool (.16921943BTC) at current network difficulty every 3.5-4 days.
So for you, add a third card's stats, figure in that you may not be able to OC to this degree, and going with or without crossfire may result to different rates, and go from there.
Rusty
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