Does anyone having any experience or knowledge of the comparative degradation in graphics performance and quality between ATI and NVidia products when connected to a monitor via a KVM?
The reason I ask is that I have multiple PCs connected via a Belkin Omniview KVM (this one) and whilst NVidia cards (8600GT, 8300LE, 8800GT) seem to always recognise my Dell 2407WFP monitor and perform quite happily at 1920x1200, both the ATI Radeon cards I have tried (3870 and 4850) fail to do so.
By this I mean that the monitor is not recognised by the ATI Catalyst Control Centre software; the DDC (?) data is not recognised and I have to manually set the monitor's resolution and refresh rate (1920x1200 @ 60Hz). The screen display then suffers from distortion, wavering and flickering in the top inch or so, be it on the 2D Windows desktop or via DirectX 3D in a game.
For clarity and (hopefully) to forestall any questions:
- PCs are connected via Belkin (VGA - obviously) cables to the KVM, and thence via the Dell provided VGA cable to the monitor.
- PCs are running Vista SP1 - I don't currently have a XP machine
- Latest Radeon Catalyst drivers installed (8.8 at the time)


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