Comment by Rinzler89

I think the story was a bit different. Sony had envisioned the the final Cell chip to be more powerful than what they launched (4 PPEs and 32 SPEs @ 4GHz versus 1 PPE and 8 SPEs @ 3.2GHz) and they though that would be enough to render graphics with it like they did on the PS2, and only realized later in development that it won't be enough so they went to Nvidia and asked for a discrete GPU.