No, the PSP accepts Memory Stick Pro Duo cards ONLY. So you'd need some kind of an adapter at a minimum. You'd also need a pretty recent firmware to be able to make use of a memory card over 4GB in size.
And about the second link on a google search reveals the Sandisk website for it, and a MSRP of $150US.
hey guys can we use 8gb m2 with psp for gaming n all
whats the price for it