For all you unbelievables here are the results after 20 hours (look at the low rejection rate)
I also have a 7950 in another rig running at 285H/s
If you aren't getting these speeds, hack your memory straps, use 15.12 drivers, use windows 7.
The other 2 slower Tahitis are 1000mhz core clock because they are the crap Gigabyte windforce and overheat easily so I can't run them at 1100mhz, however chances are they would run at 330h/s under 1200mhz.
So the hashrate is clearly linked to engine core clock speed.
However for them to run at 1200Mhz you would need to run at stock voltage or overvolt and your power consumption would be in the Scrypt Litecoin power consumption terrority. I am talking about 300-350Watt per GPU at the wall. Not worth the extra speed boost.
Especially since the Gigabyte Windforce 7950/7970 were known to catch fire during the litecoin days.
on my 7970 I have 298H/s with 1100/1575, and it works without crash
but i can't improve my Sapphire 280x Tri-X OC to this results, I have only 286H/s in stable. What clocks are you used?
p.s. timings are 1250MHz
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