Quick RAM Question

I'm looking to add more RAM to my system, currently have 2x1gb DDR2 800. With my upgrade, I'd prefer to add more sticks, but I'd like to add 2x2gb sticks instead of simply matching my current RAM.

My question is, is it alright to mix RAM of different memory sizes? The set I'd like to add is otherwise identical - same brand, speed, timing, etc.

My current: http://www.newegg.com/Product/Product.aspx?Item=N82E16820145175
The upgrade: http://www.newegg.com/Product/Product.aspx?Item=N82E16820145176
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  1. Hello.. yes from my experience you can do that.. but remember that a 32 bit operating system is only able to use 4gb of ram for software use...

    there are some rare instances of not being able to mix ram sizes... depends on the motherboard you have.
  2. I had 2.5GB of ram in my old PC. 2x256MB and 2x1GB. The only thing that matched was the speed, cas latency, and voltage. Brand and size were different. It ran in dual channel fine with their rated speeds. You aren't guaranteed to get the same results though, but odds are it will work. I've never had a problem mixing ram.
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