http://support.dell.com/support/edocs/systems/dim4550/specs.htm#1101572

I got this computer like 5 years ago I think and I just upgraded my computer ram to 2GB and on the dell spec's it says it can only hold 1GB of ram. Did 1GB sticks not exist 5 years ago or what?

Sorry I didn't know where else to post this at if this is the wrong place.

If you right click on my computer and go to properties does it show 2 gigs?

www.crucial.com will give you plenty of info about your pc's ram compatability.

Hi, the reason your technical specifications sheet says your computer can only have up to 1GB of memory is because the chipset your motherboard is designed around can only address up to 1GB of memory. At the time your motherboard was built, 2GB of memory would have cost many hundreds of dollars, so almost nobody had that much memory. I have a similar motherboard and it had 512MB of DDR. At the time 512MB of memory was more than decent.

Your computer is running but you don't have access to all the installed memory. If you can, return the memory and purchase two 512MB dimms of DDR. They will be cheaper, and you may encounter memory errors if you keep the larger dimms.

According to crucial, it depends on the supported fsb.

If it's the 400mhz fsb then it supports 2gig. http://www.crucial.com/store/listparts.aspx?model=Dimension 4550 (400MHz FSB)

If it's the 533mhz fsb then it supports 1gig. http://www.crucial.com/store/listparts.aspx?model=Dimension 4550 (533MHz FSB)

He's in luck. His 2.0GHz Pentium 4 has a 400MHz front side bus, so he can ignore my previous post. My 2.0GHz Pentium IV had a 400MHz FSB, so I'm assuming his does too.

I had 1 X 512 then installed a 2nd stick so now 2 X 512. Just ran the crucial test and they are saying that it will work with 333mhz also 2 X 1gig

but the fine print says

Each memory slot can hold DDR PC2700,DDR PC3200 with a maximum of 1GB per slot.*



*Not to exceed manufacturer supported memory.

Good job i pointed that info out then.

Wow, I just got home from school. Thanks for all of your replies.
I bought my ram from Crucial.com

Yes it does.

So I can keep my 2GB of ram and not worry?

I would say so.