Nf16 hashrates?
On NF16 I'm getting 205 h/s from R9 270x with ~14% HW errors (on 140A there is 1R and 20HW)
205 - (205 * .14) = ~176
Close to what I've got, 185 with no HW errors, ever. All right. Any 280X/290X numbers?
R7 240 4 GB card - 342 h/s
R7 250 2 GB card - 205 h/s
no HW errors on either
Did you rewrite the kernel as well, or just find some good settings?
That's using the opencl kernel that's published in my github (on one of the branches - chacha-flexible I believe) and a lot of time tweaking the settings of the miner and the card frequencies. I have an updated kernel that I haven't used on the 250 2GB cards (because I've dismantled the miner that used them) that gave a 2.5% increase to the 4GB cards, so maybe 210 is possible.
FWIW Wolf0 - the 64 bit pointer stuff appeared to slow my miners down actually, so I'm not using it, and still on catalyst 13.12