Adding memory to older PCs

I have an old Dell L700CX model in the house with 128MB of ram that I mainly use as a backup internet browser.

I decided to add some memory and read that the computer is 512MB max. So I tossed in a 256 MB SDRAM and I get nothing but a blank screen on the PC. I completely removed the original card and tried to run with only the 256MB and similarly the computer turns on but just gives a blank screen.

I removed the upgrade and the computer continues to run normally on the original 128MB memory card.

Are there any in and outs to adding memory that I may have missed?

Dell PCs require specific RAM. You don’t necessarily need to get it from Dell, but you do need the correct RAM; just slapping in any old RAM won’t, as you found out, always work. Go to www.crucial.com and use the memory finder to determine what RAM your Dell needs.

What kind of memory were you using? The Dell Dimension L series uses PC100 SDRAM modules, though PC133 is backward compatible and will also work.

If it was the correct RAM, try pulling it out and reseating it, making sure the clips are fully engaged when you push the card into the slot.

I think that’s where the guy at the computer shop went to get me the RAM I have now.

I didn’t know there was a max RAM.

I too have an old Dell (1999 - 2000?). I expanded to 320 MB RAM in or about 2004. I wanted to go to 1 GB. How do I find out if this is possible?

You need to find out what motherboard you have. There are a few ways to do this, but if you know the model number of the PC, it should be easy.

Where can I find that?

Usually on a sticker on the back or bottom of the PC. Also, if you use Windows, you can right-click on My Computer and select “Properties.” If neither of these pan out, the next best thing is to capture the BIOS ID string. This appears at the bottom of the screen immediately following POST, and before Windows starts. If you hit the Pause key, you can halt boot-up to write it down. There are also freeware utilities which can read the BIOS string, but you need to know which manufacturer’s BIOS you have (e.g., AMI, Phoenix (now merged with Award) or Award) to get the right utility.

One place you can look is on the support section of Dell’s own website. Take a note of the service tag of your PC (it will be printed on a label at the back of the computer) and enter the code into the Dell site.

This code should provide you with all the original specs of the PC as it was shipped from the factory, and the manuals will tell you motherboard type, maximum memory and so on.

The crucial.com scanner says Dell Dimension L Series - Max RAM 512MB

If this is the max, then is it worth going from 320 to 512 or is it time to buy a new system?

Desktop
WinXP

Primary uses:
Internet
Word Processing
No major graphics or media needs

Current problem: Slow downs but nothing major . . . more of an inconvenience and frustration than a necessity

Other issues: Don’t want to drop $1,000 on a new system if I can help it

Yes. XP will almost always run faster with more memory, though you may have other issues that are slowing you down. for $39 +s&h, more RAM is the cheapest, most effective upgrade you can perform to improve performance.

OK, thanks. I have no knowledge of hardware. Is the RAM upgrade an easy do-it-yourself job for a novice?

Yep, pretty easy. There are tabs on each on of the installed RAM stick. Push these down and the stick should pop out of the socket. The new RAM will go in the same way; push it down into the socket and the taps will swing up to lock it in place. It can only go in one way. If it doesn’t go in easily, turn it around the other way.

According to the scan, it appears I have 2 slots holding 64 + 256. Each slot has a 256 max.

I guess I will need to replace the 64 with a 256.

Will it be easy for me to determine which old stick is the 64?

In addition to that last question, which stick should I buy, if it matters?


$39.99

256MB

CT207869 SDRAM, PC133 • CL=2 • Unbuffered • Non-parity • 133MHz • 3.3V • 32Meg x 64


$38.99

256MB

CT230102 SDRAM, PC133 • CL=3 • Unbuffered • Non-parity • 133MHz • 3.3V • 32Meg x 64


Thanks again!

Probably not by looking at them, no. You might get lucky and find there’s a label on the stick, but IME that’s the exception, not the rule.

What I’d do is pop out one stick and boot up, then see how much memory you have. Should be easy from there to work out which stick is which.

Download a free copy of Belarc Advisor. It will tell you which is which. Generally, slot 0 is closest to the CPU.

The difference between those two sticks is their latency. One has a latency of 3 nanoseconds, one has a latency of 2. You probably won’t notice the difference, but for a buck – and since it’s the last upgrade you’ll probably make to this machine – go ahead and splurge! :smiley:

To make what Jurb said clearer. The CL=2 is better than the CL=3.

Sometimes the memory sticks have their size on a label on the stick. I’d choose the one with the least amount of chips if guessing witch is the smaller about of memory. You may want to install the new stick without the older ones to see that the new stick is the size you ordered and if it’s compatible with your system. Install the old one of the old sticks after a successful boot up with the new one.

You may have problems if the BIOS isn’t set for auto detect of the memory settings.

I won’t disagree with the suggestion to remove one and boot to see which one you got, but I’d be willing to bet that the 64 MB RAM only has black chips down one side of it while the 256 has them on both.