Why is my Oblivion gameplay so laggy with this machine?

[stainer711]

Specs:

-AMD Athlon 64 3700+ processor

-1 gig dual channel ram

-256mb 7800gt Vanilla graphics card (JATON ROFL)

-450 watt Antec Power supply

During the introduction of the game with the max video settings and without antialiasing i got down to 15 fps during the fighting scenes. Isn't this really low for my setup? People with supposedly lesser machines are saying they don't drop below 30 fps with 5 enemies on the screen or more. I don't get it. Any ideas?

My card is clocked stock at 400/1.0

 

[Nitestick]

drivers

 

[BioT3ch]

What settings are you running on? With a 7800GT, you need to run 1024x768 no AA. Turning down the grass view distance will also really help. Grass is like the most demanding thing in this game.

 

[stainer711]

I have the correct drivers. I only have the resolution at the default one.

 

[Metr01973]

Apparently to run Oblivion with everything maxed out your going to need a SLI set up. Even though you've got 7800GT this will not be able to play it on maxed out settings. like BioT3ch said try dropping the resolution down but keep everything else the same. Then if the problem persists then start dropping the settings for the grass etc.