Need help with my ram installation

[Bigjosepi]

Alright so I just bought this RAM DDR3 4 GB 1333 Mhz PC3-10600, 512M x 64, 256M x 8, 1.5v and on my laptop a toshiba satellite L675-S710 I have these in there 2x DDR3 2 GB PC3-8500 running at 533 mhz I dont know If I should just remove one of the 533mhz 2 GB rams and put in the 1333mhz 4GB and have all 6GB running at 533mhz or install only the 4GB 1333mhz on there I'm pretty stumped might sound stupid and also in a couple weeks I'm going to purchase the same 4GB ram to make my ram to 8GB but till then what should I do?

[oldbrave]

It's not a good idea to mix memory, the best suggestion I can give you is to return the memory you just got and get an 8Gb kit with matched two 4Gb sticks. Even getting a single 4Gb stick now and another in a couple of weeks isn't the same as getting a matched set.