Here is the link to what is in here somewhere graph of current to milliamps running a benchmark :: manitou48/teensy4/blob/master/coremarka.png

The T_4.0 has the memory as indicated - the only QSPI like ports are the SDIO access to the SD card. The T_4.1 - coming later in 2020 - is planned to have a pair of QSPI connected chip pads on the underside ...