Your pb3 is good strap for my MICRON-8GB xxxxM3 ,very difference .
PBE1.6.7 Or other= max 1250/2000 no error HW max 905h/s ,but OC no possible with 0 error HW .
PBE.3 =1250-925/2100-900 no error HW

= 1025 h/s-1050h/s cnv2 with TRM .
BUT ....strap cryptonight pb3 no good for 0 error HW with oc .
Strap ETH with oc mem for cnv2 is very cool.sorry for bad english .