Should I buy a cd r or cd rw drive?

The SZ381P/X is delivered with 2 GB RAM - twice the amount of the European SZ2VP with 1 GB RAM. A 160 GB hard drive is used in the SZ381P/X while the SZ2VP is equipped with a 120 GB hard drive. The SZ381P/X comes with the Core 2 Duo T7400, 2.16GHz CPU where the SZ2VP comes with the Intel® Core™ Duo Processor T2600, it also at 2.16GHz.