Rumours regarding X1900 (R580) specs!

Personally, if this rumours is true, then I can safely say that R520 buyers are going to be devastated, cheated and so on because it looks like R520 acts just as a temporary solution, a filler until the real deal video card from ATi arrives. Face it, after a delayed launch of X1800 series in October, it takes just about another 3-4 month before ATi 'paper launch' (possibly!) another high end products.

Here we go:
- 48 pipelines ?? (it turns out to be 16-pipes with 3 pixel shaders each pipes!)
- 650 MHz core
- 750 MHz (1.5 GHz) memory
Above was taken from Sapphire X1900 XTX rumoured specs (I went to Sapphire siteand the specs are gone!)

Let's count some fillrate shall we?:
Pixel fillrate = 48 x 650 MHz = 31.2 Gpixels/sec. Is this true?? My X800 GTO fillrate is 12 x 500 Mhz = 6 Gpixels/sec. 5 times more! That's...emm (reaching for my pocket!).

Edited on 21 Jan:
It turns out that I was wrong about the calculations. X1900 has 16 ROPs, which means the peak pixel fillrate is 16 x 650 MHz = 10.4 Gpixels/sec.