Windows detects only 512mb in connect3d hd4870 1gb :(

[bjallal]

hi folks, i have problem with my graphic card, all windows (xp 32bits & xp 64bits) detect only 512mb from 1gb
i have connect3d hd4870 1gb, in past, i saw 1gb, but this problem come a month ago,
any one can help?
my config: Abit IX38 quadgt
intel q6600 g0
corsair 2x2gb kit 800mhz cl5
psu: cooler master 650w.....

 

[fjc1998]

did u change any hardware?

 

[EXT64]

What are you using to view this? Have you tried GPU-Z to see what it says? Have you changed drivers recently?

 

[bjallal]

i didn't change any hardware, & gpu-z also show 512mo,
but it's okay guys, i fixed the problem, i installed windows 7
& in gpu-z it's 1gb of ram, but in directx I see 2809mb, strange?!!!!