The QG8 and QG4 offer respectively 8Kb and 4Kb of flash. They utilize the third-generation flash with the low-voltage programming option, proven out on the GB/GT60A. Whereas the first S08 families only allowed programming down to 2.1V, the flash on the QG allows programming all the way down to 1.8V. This is a key feature in helping eliminate components of the board, saving money and board real estate.