Hello everyone,I've been having some problems with my ATi 4850 card in FSX (I have Vista 32bit). I used to get about 25FP/s with a ATi radeon 1900Xpro and when I swiched to the ATi 4850 I saw a decrease in FP/S and started seeing "artifacts"(picture attaced) in FSX i think it's something to do with the driver. Any suggestions?

Artifacts = failing card 99 times out of 100. To be sure though, you can clean your GPU's fan, inspect for physical damage on the card, verify the fan is operational and the heatsink firmly attached, and change the driver. If this doesn't fix it it's time for you to get a new card.

Thank you I'll give those a try. The thing is my brother has the exact same card (make, model) and it was bought from the same store. Both have these artifacts, 2 defective cards?

this - or a problem with overclocking. When i had an ATI4850, I got those artifacts when I clocked it too high, especially the memory. If you have the artifacts with stock speeds, something might be wrong with the card. Return it, get a new one. A word of caution, though: The 4850 is a VERY nice card when it comes to displaying FSX, with one exclusion: Clouds. The card HATES clouds, cuts framerates in half. This is why my 4850 collects dust behind me and a GTX285 is my new companion for flying :-)

Thanks! And you were right the card was too overclocked. I put the Core clock full with had to reduce the momory clock, FSX now runs well!