Well if it's compatible I'm willing to risk it,so if I can keep the 2 GB I have now and add on a total of 6 would that be better for a 64bit os installation? the more ram the better I think,thanks for responding looking forward to your next response!
If you have two identical 2 GB sticks, total of 4 GB, they should run in "dual channel" mode.
If you have a 2 GB stick and a 4 GB stick, total of 6 GB, I think they are going to run in single channel model.
Dual channel is slightly faster than single channel.
BUT if you actually will use the 5th and 6th GB, you are better off with 6 in single channel than 4 in dual channel.
If you never would actually use the 5th and 6th, you're probably better off with 4 in dual channel.
I have 4 in dual channel. I've never used more than about 3.2. I have 64-bit Win 7 Home Premium.
So, it's important to know how much you'll use. Check Task Manager and Resource Monitor.
You may never notice any difference between single and dual channel.
So, in the real world, it may not matter much at all whether you have 2 plus 2 for 4 total or 2 plus 4 for 6 total.