Oblivion Graphic Requirements, How come they don't work for me!!! Options

[HyPN0]

OK, i would like to post my config first:

Monitor: Dell E176FP
Graphic Card:Ati RADEON X600
Processor:Intel Pentium Dual-Core 3Ghz
RAM:1024 MB RAM at 533 Mhz
Motherboard:Intel

To be more precise,it's DELL Dimension 5150 configuration......

So i simply MUST ask:
How come that i must play onlivion at 800x600 resolution,no AA,Low details,no bloom - And it still sometimes doesn't work properly!!!!Especialy when there are more NPC\Monsters on screen.

So i ask:How is that posible?I have Recommanded requirements and i can't play it on minimum!
My only guess is that this monitor is a piece of junk:Does the fact in can max support 75Hz refresh rate totaly change things?

Or some settings are badly configured?

Please Help

[milanius]

This sounds like a driver issue - and since we're talking ATI here, there is a good chance that you'd get more juice out of your graphic card if you updated your drivers... but even so, there is still a chance that your PC would stagger. X-series are great cards, from everything I've read about them, but some games simply favorize NVidia and constant trouble with Catalyst drivers in the past haven't done much good for ATI's reputation.