Following on from ATI’s “Technology Demonstration” of a 512MB Radeon X850 XT, only for them to say “we won’t actually release this”, NVIDIA made their GeForce 6800 Ultra available to their board vendors in 512MB configurations. Both of these configurations are fairly high end, limiting their appeal and audience to the enthusiasts that can afford it, however recent listings from Gainward indicate movements down the line - not only do Gainward now include a 512MB 6800 GT to go alongside the 6800 Ultra (albeit it bot in “SLI” packs), but they now have an AGP 6200 512MB configuration!
More on 512mb cards
LOL a 512mb 6200, just shows to what end will the marketing guru’s stoop…
^^ hey when’s the expected date for the X800XL cards to hit the shelves? 
EDIT:
Read the complete review now.. suffice to say,
me off to hunt that $250 X800XL down.. :bowarrow:
Hah…thts wht i was gonna say…
BTW whn r u ordering Masky…
as soon as i hunt tht card down.. 
yeah $450 is insane, the leadtek 6800ultra makes more sense at 425
hehe yeah, BFG 6800U is $399 AGP version that is.
Yeah first they made the poor 6200 AGP 64-bit by moving it to NV44a core(something nvidia was reluctant to do but for these OEMs).Now they insult our intelligence by making a 512MB card with a 64-bit bus.
This ain’t gonna be a hit for quite some time! 
The net is plastered all over today with 512MB X800XL cards. Only game that seems to benefit is HL2. Most others show no gains at all.
here is another review