i just got my HIS 3870 today and when i started up bioshock, the performance with the 8.6 catalyst drivers wwere worse then my 8600gt's performance... what am i doing wrong cause this cant be right....

please reply!!! i wanna play bioshock without lag!!!

thankyou all!!!

what rez do you game at i have the 3850 and it plays bioshock ok
but if i where you i would rma it and get the 4850

i play at 1280x1024 and i am getting as low as 11 frames at the intro part. what drivers are you using? and it was tempting to go for the 4850 but i didnt have the money at the time.. my next upgrade probally ; )

I'm do not know what to tell you but ATI 3xxx verions they made some mistakes and now the 4xxx rox socks cuz they fixed most of the promblems if not all

Obvious software issue.

Did you correctly uninstall old "Nividia" drivers.

You should be getting over 60fps with 3870. 3870 is actually very fast for this game because this engine relies on shader which 3870 is equal to 8800gt if not better.

Hmm, I got better performance with my 3850 than you are claiming with your 3870. I've heard that the 3xxx series cards run better on cat 8.5. Maybe try that driver out.

There's nothing wrong with 3xxx series. It might not perform well as 4850 but it also cost cheaper.

my bad

I'm with Marvelous... Gotta be your software: I played all the way through Bioshock on a 4400+ and a X1950Pro @1440X900 without so much as a hiccup... and the game absolutely screams on my HD3870 (Cat. 8.5 and 8.6)...

You in Vista or XP?

i get 60-80 fps with my hd 3870 and bioshock with 8.6 drivers on 22" 1650x1050 monitor

I'd the same problem though with different cards.... just uninstall the Nvidia drivers and reinstall the ATI drivers...should work fine. Cheers.

The guy is asking for help not asking for a replacement. And im pretty sure he knows about 4xxx kicks some ass

What settings did you activate in Catalyst Control Center (AA/AF)?

Uninstall Nvidia drivers
Uninstall ATi drivers
Use DriverCleaner Pro (google for download) to clean 1.) Cab file 2.) all ATI and Nvidia drivers
Reboot
Reinstall Cat drivers

i have been trying to use all settings in catylist max but i get like 20-30 frames in bioshock when i do that. but when i switch to full performance mode i get around 60-100 frames like godless was getting. but i was expecting to be able to run with everything on max(including cataylist) smoothly. ive been using the beta 8.7 drivers, its been a small improvement in bioshock but not enough to make the game work smooth enough
i will try the DriverCleaner Pro that Vokofpolisiekar told me to try. thanku for all your help people! i will post and tell yall if this works(hope so!)

ok, i just did everything that Vokofpolisiekar suggested and it seems to be running smoother but i still cant get my catylist settings on max without getting super low framerates.. and btw my OS is XP

Maxing out the AA is probably just too taxing. Just use 4xAA and see how that works for you.