I just bought a blade and found some dodgy chinese software that can get an extra 100k/s out of a normal gridseed but it works, not sure about the blades though. I would like to try it one one just worried about breaking ir. Looks like the software "undervolts" the gridseed in someway (thats what the terminal says anyway) and then bam I got 100kh/s extra. You have to do some hardware messing around with also though,

I dont think Im allowed to post public links on this forum so pm me if you want the link.