Need help upgrading my Ram

[anna-maria]

Hey!! My computer is very slow because i run a lot of design software, and sometimes i need to run 2 or 3 programs at the same time. It's already super slow when i run one... So it becomes very difficult to use more than one. And the only way for it to run a bit faster is by restarting. SO even when i close those programs it doesn't become fast again. So i wanted to upgrade my ram, make it faster. My motherboard is Asus Corporation N90Sc (cpu 1) and i have a 4.00GB single channel DDR2 @ 333Mhz (5-5-5-15) ram.
I have 2 slots for ram, and i'm only using one. So my thought was to replace the one i have and add a second one, so i could have two 8GB rams. So for a total of 16GB. But after researching a bit i found out i should check for the maximum my computer can take, and this website : http://www.cnet.com/products/asus-n90sc-a1-18-4-core-2-duo-t9600-4-gb-ram-500-gb-hdd-plus-500-gb-hdd/specs/
says max supported size 4GB.
Does that mean that the total i can use is what i have currently? or does that mean that each ram can maximum be 4 gb, so 8 gb in total?

 

[Calculagator]

It means that the maximum total is 4gb. Whether that is true or not is hard to say. A lot of motherboards can actually use more RAM than they say they support. The only way to know is to try it or find someone else who has tried.
Before you upgrade your RAM, you want to be really certain that that is why your computer is slow. If your computer is old enough to be using DDR2, it's probably got a pretty slow CPU and a slow hard drive. 4gb isn't a lot of RAM by today's standards, but it should still work pretty well for most applications. You should check how much RAM your system is actually using. Unless you've upgraded your drive already, I would guess that moving to an SSD would be the best way to speed up your computer.

 

[anna-maria]

How can i makesure?How do i check my cpu or if i have a slow hard drive?

 

[Calculagator]

You can see how much memory you are actually using by opening the task manager and looking at the performance tab. You can also use the Resource Monitor. Those should show you how much RAM you are actually using. They should also show how much your CPU is being used and your Disk.