I thought only the 216SP version were 55nm and 487mm². This is not the original bios, I flashed with a Gigabyte SOC bios which originally had 680mhz on the core clock at 1.17v, changed that to 1.18v and 750mhz. I wonder why I have a B1 revision 55nm chip and I only have 192SP. Even with the stock bios GPU-Z reported a 55nm chip B1 revision with 192SP. Do you think these 216SP are somewhere in there?