Boo-Yah! 8GB (2x4GB) works in pro.

gpwolfe wrote:
That's what an E6600 or E6700 Core 2 Duo is for. Those are the latest and greatest that will work in the pro that have VT-x support...on top of being less anemic than the E2160 anyway. --Gary

Yes, but unlike a memory swap, replacing the CPU permanently voids your warranty. If you upgrade the memory and run into problems you can swap the stock memory back in and factory default if necessary and you should be O.K. (apart from loss of data) provided swapping the memory doesn't damage the memory slots and the memory doesn't damage other parts of the chassis.

8GB is a nice upgrade, but it's well and truly overkill for most users.

TeknoJnky wrote:
I have a q6600 I'm likely to upgrade soon, I wonder if that would work.

I don't think so. See the post after http://readynas.com/forum/viewtopic.php?f=35&t=29284&p=164636#p164636

If you must upgrade the CPU and thus don't care about voiding your warranty then stick to one of the CPUs that is known to work.

There are two versions of the CPU used in the new Pro 6. One of them supports VT-x. If you get a Pro 6 and it has a CPU supporting VT-x that would be a better option imo. If you can put 8GB RAM in a Pro you should be able to do the same in a Pro 6.