GhePeU wrote:
> I searched with google and in the X mailing lists for the current status
> of the free source r300 driver, but I couldn't find any clear statement
> about the "Hypermemory" feature; most pages or posts were outdated or
> vague.
> 
> So the main question is: does the r300 open source dri driver support
> the Radeon desktop PCIe video cards (i.e. X300SE or X550) with
> Hypermemory, that is the feature that allows the card to use both the
> on-board vram and the system ram as video memory?
AFAIK Hypermemory is a pure marketing gimmick, the chip used on these 
cards is no different than the normal cards, they just have less onboard 
ram (and only a 64bit memory bus). So I'd suspect it should work just 
fine BUT the driver will only use the onboard ram, and 32MB is probably 
not quite enough if you need more than 2d (not to mention it'd be slower 
than the normal 128bit cards), though I think there are X300SE or X550 
out there with 64 or 128MB onboard ram. So a X550 HM 512MB (with 128MB 
onboard) will work exactly as good or bad as a X550SE 128MB, since, 
well, it's the exact same card with a different name... (someone correct 
me if I'm wrong and there might be problems with for instance different 
default setups of apertures which could lead to problems but I don't 
think so).

> And, secondly, do
> AIGLX or XGL work on such cards?
Dunno exactly, but the basic support should be the same as any other 
r300-based card. Though the 64bit cards definitely are no speed demons, 
no amount of marketing buzzwords will help unfortunately in that area, 
but I'm not sure if that would be visible for aiglx or xgl. Low amounts 
of video memory will probably make a difference, though.
Personally, I'd never really recommend any radeon card with only a 64bit 
memory bus (save the good old simple radeon 7000...), marketing-enhanced 
or not, but since these are obviously sold quite often I must be alone 
with that opinion... IMHO, you're paying almost as much as the full 
128bit cards for basically half the performance.

Roland

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