I don't think you can do that either at the moment.
It only uses the native resolution of the screens right now. e.g. 3 x 24" screens will ONLY work in 1920x1200 x 3 = 5760x1200. I'm sure we're all hoping drivers will be updated to allows different resolutions and orientations, as well as cool things like bezel correction.
Ah, fair enough
I doubt that's an active converter then. The actives are normally at least £60.
I'm not 100% sure it is, but I think it is. I looked into it a couple of weeks ago and the reason for the active converters cost (and USB cable) is that there is a fair bit of circuitry involved in actually converting a DP signal to DVI, mainly in the TMDS.
On the other hand I believe it's STMicro that make a DP to VGA converter chip, it's not staggeringly expensive and doesn't require anything other than the power line present in the DP standard.
On the active/passive argument, the reason you can get passive DP to DVI converters is an addition to the DP spec where it can output a DVI/HDMI style signal, and these do work on the 5870 but due to only having 2 TMDS circuits they don't work whilst also using the 2 DVI's as they need the TMDS so the DP reverts to only DP standard.
However the DP standard doesn't appear to have the ability to output VGA signals (kinda makes sense
) and any converter will have to be an 'active' converter afaik.But as I said, not 100% sure, not heard of anyone trying it, however I do think after looking at the standards/specs that it should work...