can you mix ram

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You can but I encourage you not to. At best it may work, at worst your PC won't even boot. Also even if it does work you'll likely be running in mixed mode and that hampers your Ram's speed/performance. You better off buying all new ram of the same make, model and capacity.
You can but I encourage you not to. At best it may work, at worst your PC won't even boot. Also even if it does work you'll likely be running in mixed mode and that hampers your Ram's speed/performance. You better off buying all new ram of the same make, model and capacity.
 
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