First post, by feipoa
I have 4 GB of memory spanned across four DDR400 modules. If I use some older, low memory AGP graphics card, all 4 GB of my system RAM is addressed. However, if I install a newer AGP graphics card, say a GF6 with 256 MB of RAM, only 3 GB of my system memory is addressed. If only 3 GB is addressed, does my system memory still run in dual channel mode? If yes, what type of performance hit, if any, is there?