Western Digital serves up 320GB on a Platter
@ 2008/02/23Ordering a WD3200AAKS could land you the new drive or the older design with two 160GB platters. Since only the part number changes in this case, the one you want is WD3200AAKS-00B3A0. For all intent purposes this means you need to find a dealer that carries OEM drives and will guarantee this particular part number is available. It's either that or take your chances with a retail package. WD started shipping these drives in mass at the end of January so odds are that retail kits will contain mixed stock at best.