Ah, numbers. Sony's already cleared up that 480MHz figure on the PSP Go, but now we have another rumor bringing up more impressive digits that lay in the PSP's future.
Eurogamer.es is claiming to have insider sources who say that the PSP2 (note that this isn't the same as the PSP Go) will have a quad-core graphics chip inside its as-yet-unrevealed structure. This is reportedly a quad-core version of the low-power SGX543MP chip, codenamed "Hydra".
Eurogamer's translation of the original Spanish report notes that the single core version of the chip has been demonstrated at CES running Quake 3 Arena at 30FPS. I can't claim to know a whole lot about hardware, so here's more from Eurogamer:
The obvious difference of course is that the SGX543MP is a multicore processor, available with anything up to 16 cores on tap. According to the original report, PSP2 opts for a quad configuration offering notional specs of 133 million polygons per second, and 4Gpixels/sec fillrate, assuming that Hydra operates at the chip's low-end of 200MHz (higher speed variants are also available, presumably for desktop use). While specs like this are always subject to interpretation, these figures are a ballpark match for the original Xbox. However, PowerVR's tech includes tile-based deferred rendering, which should provide a nice performance boost.
The chip is also described as being able to operate as both graphics processor and CPU, so the PSP2 could conceivably use a single chip for everything, which can save power as well as being more efficient from a programming perspective.
- Sony: PSP Go's 480MHz clock speed reference was for USB, not CPU
- PSP Go clock speed maxes out at 480Mhz according to FCC