On soundblasters, you should always go by the chip name. If the chip is identified as a SB128, then the card should be compatible with the SB128 family of drivers.
Creative uses "creative" naming on it's products. The thing was probably originally the SB128+64 limited gold ass-ram platinum edition, for what it's worth.
Use SP128 drivers on the SB128 chip, and be happy. ;-)
