if its the same meridian that do the sound systems, thn theyre bleedin awesome. but i dunno. but still it says only one PCI-E cable... does it need two for two cards? and wouldnt dual 6800gs's be better than a 7900gt? (i was gonna get a 7900gt for a different rig i was building, i almost cried when it all came out at more than £700. but thats a different story)