My old laptop has only one slot for ram. Current ram is SODIMM DDR3 4GB 1333 256x8 CL9 (see attached picture). I want to upgrade ram to 8GB but did not find DDR3 8GB 1333 256x8 CL9. There are a lot of DDR3 8GB 1333 PC3-10600 2Rx8 CL9 in market, so my question is can use 2Rx8 instead of current ram which is 256x8?
P.S. There is no detail information about ram and ram upgrade in the laptop's official documentation.