Owners of a Lite-On 451S (lowest price $ 69.50) and a Lite-On 851S can load the firmware of the Lite-On 832S and burn their DVD+Rs at 8x speed and also write to double layer media. Before this seemed impossible also because many manufacturers have told us that upgrading a 4x drive to a double layer writer was impossible due hardware differences. Of course it's important to note that 'overclocking' voids your warrantee and should be done after have carefully read the instructions. Read more about the procedure, the results and others experiences in the official 451S@832S, 851S@832S - It works! thread.