Memory size?

[fyyy]

I have this Macbook Pro of 2.33GHz processor. It came with 2G memory. I recently bought 2x2G memory and upgraded it. The weird thing is, when I open 'About this Mac', it shows 4G memory. But in the Activity Monitor, only shows 3G memory in total. anybody knows why??

Thanks!

 

[Cave Man]

Your Calistoga chipset's memory controller is 32-bit. "About" tells you what's physically installed; "Activity" tells you how much it can use.

 

[fyyy]

that means 1G is wasted?

 

[Cave Man]

It's probably addressing 3.2 or 3.3 gb, so you're losing 0.8 to 0.7 gb. But by using identical chips (2x2 gb) you get dual-channel performance boost (probably only a couple of percents).

 

[fyyy]

Thanks for the reply, but it is showing 3.00G

I just found another post says that the max memory supported on my computer is 3G. so should I use one of the original 1G memory and one of the 2Gs?

 

[aleksandra.]

Thanks for the reply, but it is showing 3.00G

I just found another post says that the max memory supported on my computer is 3G. so should I use one of the original 1G memory and one of the 2Gs?

As someone already mentioned, by using identical stick you should get some speed improvement (though I don't think it'd be much noticeable). So unless you plan to sell it or something, better use the 2GB one.

 

[Cave Man]

Yes, that should be fine.