[BigSilverHotdog]

Ok I think I found it. The X800 SE is listed at GPUreview as only being produced by Sapphire and MSI, and this fits with what I remember. Sapphire did it first, but they didn't change the name to "SE" until the tech world got a hold of the actual card specs and went ballistic with what was essentially advertising fraud (because there was a huge (at the time) difference between pro, GT, GTO, XT, XL, and SE).

Now I'm really keen to find out your part number. 8)