A Factor 5 employee who goes by the name "Han Solo" claims to know the Revolution's specs, and has leaked them (middle of page 3). Why listen to some guy trapped in 1977? Senor Solo, as I'm sure he's known to his Spanish-speaking friends, proved worth listening to when he nearly nailed the Xbox 360 stats before the official details came out. That said, we can't treat this as reliable information.

The brains of the console are rumored to be a single dual-threaded IBM "custom" PowerPC 2.5 GHz CPU, with 256 KB L1 cache and 1 MB of L2 cache (L3 cache is rumored). The system will also sport a Physical Processing Chip (PPU) with 32MB of dedicated RAM, while the CPU itself will saddled up next to 512MB of system RAM. The custom ATI GPU solution is rumored to consist of a RN520 600MHz core, backed with 256MB of RAM and "32 parallel floating-point dynamically scheduled shader pipelines." While the output will theoretically be capable of putting out 1080p resolution (higher even, at 2048x1268), Solo says that HD support has not yet been decided (which fits with Nintendo's own comments).