The memory is the OCZ platinum range (900mhz) exactly what I have from them.
Mesh do use good components, their customer service is however very much to be desired. I have a MESH comp, would I recomend them? My answer would be yes now, but knowing that it probably will NOT be a straight forward transactions I and know if I do get probs it will be a hassle to get sorted. I know it probably will not be delivered on time etc etc, but if I say 'Yes' then I need to accept all that and go for their prices and components.
I got a custom sli9 with the 7950gx2s, E6700, 2 DVD Drives, 2x250 sata, 2x320gig externals, 2gig ocz 900mhz ram, X-fi sound card, on a P5n32 sli deluxe mobo. I did unfortuantly have a bad experience getting it, but the actual machine is amazing and can't fault it.
Good luck anyways