http://puu.sh/8XFi9.pngHash rate on my 6x R9 290s (reference design, all elpida memory, all running stock mem clock and minor core OC at 1000mhz no volt mods, catalyst 14.4):
Original sph-sgminer: 2450kh/s rejects ~1.5% watts 415
2% fee miner w/ same config: 3075kh/s rejects ~1.5% watts 390
2% fee miner w/ below config: 3725kh/s rejects ~1.5% watts 425
Above watt ratings are for the 2 card rig. Temperatures are still "ice cold" compared to what reference cooler R9 290s do on scrypt. Not worried about my fan bearings going out trying to keep the cards cool.
Very minimal increase in watts from old sph-sgminer for a big increase in hash rate. My cards are very underperforming R9 290 cards compared to average and don't OC well at all, so people with better OC will probably be able to get even more hash rate. For me the main secret was lower intensity to 18.
My config is: -w 128 -g 2 -v 1 --thread-concurrency 20482 -I 18
