So, I've been reading up on some specs from the PS3 and certain things like IBMs floating point benchmarks on their Cell Server board and Nvidias floating point benchmarks on the GeForce 6800 ultra. Turns out the cell server board runs VERY hot at about 90nm and only gets about 200 or 300 GFlops when clocked at 3ghz. The 6800ultra gets about 40GFlops. I have a hard time believing that the Cell processor can even get 2 or 300 GFlops when it's supposedly 10x as powerful as a PC processor, when a 3ghz P4 is about 6GFlops.
Let's just assume that somehow a single core PPC with 8 specialized cores is somehow 10x as powerful as a 3.2ghz Athlon 64. Athlon64s have about an 8:5 processor clockspeed/efficiency compared to P4s clocked at the same speed. So, a 3.2ghz Athlon64 would equal 31GFlops.
The RSX inside the PS3 is based on the architecture that the G70 is based on, and supposedly they're both 2x as powerful as an SLI system using 2 GeForce 6800 ultras. Since the 6800ultra has a floating point calculation speed of 40GFlops, a G70 should have 80, maybe slightly more, but about 80.
When the power of the G70 and the power of the Cell server board are added together, the total is about 111GFlops. Sony, on the other hand, claims that their PS3(possibly even just their Cell processor alone) is capable of doing almost 20x that.

Also, something else to think about. Gamespot and IGN, and possibly other sites, report that the RSX uses only a 700mhz memory bus. The G70 uses a 1.4ghz memory bus, twice as fast as the RSX. Now, I have a hard time believing that a 24 pipeline card with a slight increase in clock speeds can pull off a100% performance increase(even theoretical), but now the same card with half the memory bus is working at the same speed? Come on, Sony. You might be able to fool dumb fanboys and hardware reviewers that just report what their told, since they can't test the hardware; but you can't fool me.