Originally Posted by
SSUK
You can save yourself reading a highly inaccurate article by just knowing one thing:
The Cell Processor is not a standard processor.
While the Wii and Xbox 360 run on a PowerPC processors, the Cell is an altogether different beast. Something which takes even mature, professional developers by surprise. A lot of code for PS3 games is probably highly unoptimised for the console, unlike the PPC processors which the 360 and Wii use, the Cell has it's own CBEA (Cell Broadband Engine Architecture) which developers must code around.
Since a lot of homebrew developers are hobbyists who are just writing programs for the sake of it, they're not really in the most advantageous position to try and write for an architecture which has hardly any public documentation.
Also, for those of you confused by the article by thinking "Well, the PSP is hacked, why not the PS3?", well... The PSP runs on a MIPS processor (which is the same architecture which was used in the Playstation and Playstation 2 (yes, the Emotion Engine had a MIPS core)), which is a well documented architecture, hence easier to code for. The MIPS architecture and the CBEA architecture have worlds of difference between the two, making it easy to write for the PSP, so you can confidently tweak the firmware knowing that it SHOULD work. Where as if you modify the PS3 firmware and load it back onto the PS3, you could ultimately brick your PS3 and have next to NO certainties that the code should work or not. And that's one expensive paper weight you'd have.