My sapphire 7950 on a computer with 4gb ddr2 cannot go past -i 13 without getting hardware errors, I've tried thread-concurrencies for hours. Currently it's only doing 160kh/s
My XFX 7950 is fine and pulling about 200kh/s --thread-concurrency 16384 -i 19
I've yet to get a 5870 to run at any -i 11 without errors
My XFX 7950 is fine and pulling about 200kh/s --thread-concurrency 16384 -i 19
I've yet to get a 5870 to run at any -i 11 without errors
I had some success (250kh/s per card!!) with sapphire 7950 dual-x cards using the linux vertminer client (v0.5.2) built from github and the following config - I've only undervolted gpu and mem to 1.125v (as an FYI)
--scrypt-vert --lookup-gap 2 -I 20 -w 256 --thread-concurrency 16384 --gpu-engine 1100 --gpu-memclock 1500
I also set --temp-target 77 --auto-fan and my fans run at about 50%
the difference between HW errors and none has been the --lookup-gap switch