Hi,Realising that I was still running Catalyst 5.10 I thought it was about time I updated the drivers, so I downloaded and installed the latest 6.8 drivers and ccc. Problem, I have 2 cards installed, an X800 pro driving my main monitor and a PCI Radeon 7500 driving 2 further monitors, however the 6.8 drivers no longer support the PCI card so I downloaded and installed the 6.5 drivers which were the last to support both my cards. Question, is it possible and safe to have 2 sets of ATI drivers installed at the same time? ie the 6.8 for the X800 and the 6.5 for the PCI card.Many thanks for your help.Pete.

Bump.Anyone?

As far as I know, you can't have two different drivers installed at the same time. The last one you install will overwrite the first one. I have an X800Xl, and find the best drivers for my card were the 6.2 version. The later ones dont work well with this card for me. I think they are optomized more for the X1900 series.

Thanks Boris, confirms what I thought, I'll give the 6.2s a go.Pete.

Your welcome Pete!

Hi Pete and thank you. Thanks to this thread I'm back to three monitors again.When I bought this PC in February, I used the on-board X200 graphics and a 7500 PCI card to run three monitors. It was always intended to be temporary until I could afford an ATI PCIe card. When CC advertised an X1300 Pro for $65 after rebate, I jumped.Of course I DLed the very latest driver as soon as I installed the new card and was never able to get the PCIe card and the PCI card working simultaneously. I could still run the on-board X200 and either the PCIe or PCI card but that consumes RAM (shared memory) and that's what I wanted to avoid.After reading this thread, I reinstalled an older driver and now all is well. (That may be an overstatement, I still have lots of tweaking to get it just like I want it, but I do have both cards playing well together now.) So thanks.Does anyone know if this is considered (by ATI) to be a bug in the later drivers or is this their intended plan? If it is intentional, then why?R-

"Does anyone know if this is considered (by ATI) to be a bug in the later drivers or is this their intended plan? If it is intentional, then why?"IMHO ATI has had many buggy driver revisions lately - lots of updates, but it seems they take a step or two back in other areas with each revision. I know the most recent ones, the 6.7's and 6.8's have caused some problems with dual monitors and maintaining proper resolution, problems that weren't apparant with earlier releases. I can't use any driver later than the 5.13's on my rig because it causes a big UI lag in the sim while accessing the menu bar - seems I'm the only one and can't figure out why. Glad you got a handle on your problem.Dell 8400 3.2 GHZ H.T.800 FSB/2MB L22 GB 533 DDR2X800XT 256MB/Cat.5.13's6x Adaptive AA/16x HQ A/FIntegrated SoundDual Monitor: Dell 2405/1905CH Yoke/Pedals