deathvirus_me
Wise Old Owl
Well , in certain games , it may happen that some unnecessary data is not unloaded from the vram , thus occupying unecessary space. . even with 512 MB cards , it might happen that the total vram usage actually reached over the limit of the physical vram , i.e. 512 MB .. in such a case , the data that was supposed to be stored on the vram is now shifted to the RAM , which is a hell lot slower than the vram .. so this results in stutterings and slowdowns quite often .. the only way out is the alt-tab out of the game , which flushes the vram , and then go back in the game ...W i d e S c r e e N said:@deathvirus_me ---plz explain :texture vram overloading problem of the 8800.
Though this may happen on any card , the effects are more noticeable on the 8 series ... with my 7950GT , while playing Stalker , vram usage often went upto ~550 MB , but i never noticed slowdowns .. stutterings/hitching yes , but not slowdowns .. but with the 8800GT , the fps actually dips ... infact in certain parts of Crysis , the fps went from ~32 to ~24 , and after alt-tab , back to ~32 ...
This problem is dependant on the game to quite an extent and is more noticeable in games which uses texture streaming , or any similar "streaming" techniques .. its like the engine totally forgets to unload the unnecessary things from the vram ...
And also , this is also a problem in the driver level ... and more dominant with 8800's .. this problem in more open terms is referred to as "memory leaks" ... only in this case its the vram and not the system ram .
But is still fail to understand why there is a performance slowdown instead of just stutterings ... never faced this problem with the 7950GT even when the vram usage went over the limit .. infact wit QTP3 , Oblivion avg. around 580 MB almost all the time ... no slowdowns .. just stutters .. something actually knew what to unload , when to unload ...
See : *forums.guru3d.com/showthread.php?threadid=240317
For me , the only solution i could find for Crysis was to lower texture size to 1024 , from 2048 .. then the mem. usage maxed around ~490 .. no slowdowns ...
sam9s said:@Deathvirus_me do you literally get the message "Video RAM Overload" while playing the game on everything maxed out.??
Naah .. but random slowdowns .. only solution is to alt-tab out , then reload the game ... irritating at certain times ... .. when will nvidia actually get a fix ..
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