Quote from: Sharky444 on December 15, 2013, 10:26:10 AM

You need intensity of at least 18, better 19.

If hashrate is droping it may be either a cooling issue, or too low voltage.

Quote from: JCviggen on December 15, 2013, 10:32:03 AM

Try 928/1600 or 957/1650 and drop the core voltage below default. I had a Gigabyte card at some point, memory didn't OC very well. Make sure memory voltage is 1.60V in Afterburner or Trixx, my card defaulted to 1.50V and memory overclocked poorly in general, limiting performance to around 660 Khash. My reference cards are all well above 700 khash with 1015/1750 settings. 0.58 core/mem ratio works best. Intensity 13.

only 13 work's well, cooling ok, temp is 65-72, voltage default - 1.170V gpu & 1.6V mem, problem in BIOS, not propertly work parameter -g, if 2 - hashrate drop down, if 1 - works well, but 550Kh/s Sad