Well if your trying to get by without spending lots of cash, 32-bit is the way to go unless you need 64-bit. The price difference is huge, and the vast majority of all 64-bit cards come with 2 channels, and run between $175-$220, so it will be hard to find any under those prices. The only one I know of off hand is the adaptec model, so thats the route I would go just because I have had good experience with their 32-bit ide and sata controller cards in the past. Good luck!