If you're only running two displays why do you need the Matrox? The Mini can support two monitors at those resolutions natively....you'll just need an HDMI to DVI adapter and a mini-Displayport to DVI adapter - one of which is included with the mini (can't recall which at the moment and I'm not home to check)
Yes..but I heard some stories about serious HDMI issues on the Mac Mini in the past..but at the end you're right..if those resolutions are no problem, for sure we should first try to do it that way..before buying the Matrox. Thanks for your opinion Fhall1 !