geoworld123 :
I recently built my own custom computer and I am using a Kingston 2GB ram running at 800MHz. I would like to Overclock it to 1333Mhz. Is it safe, how do I do it? I overclocked my processor through the BIOS but how do I overclock the RAM?
There is no DDR3 800 memory as far as I know, you must mean you've bought DDR3 1333, but your system is only running it at 800Mhz, because you have not manually set the memory parameters to run at 1333, that doesn't require overclocking that requires setting your DDR3 slot voltage manually and setting your memory timings manually.
Now if you can list your specs in detail, IE, M/B, CPU, Memory Etc. we may be able to help you get it in the ballpark.