Using different memory modules?

May 1, 2012 at 10:55:03
Specs: Vista Ultimate, SP2, 3.0Ghz/2Ghz
I have an XP machine with a Soyo P4I Fire Dragon motherboard. I currently have Crucial PC2100 DDR266 memory in it, 256mb. I want to install an additional 1GB of memory and I found that PC2100 isn't available form Crucial anymore. I did find Memory Giant and they have the 2100 memory. I don't know who the manufacturer is but all the specs are the same. Can I get this memory and still use it with the memory I currently have to make it 1.256 GB? I hate to lose the 256mb I have now. In other words, what I'm asking is can memory from two different manfacturers be used at the same time? Thanks.

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May 1, 2012 at 11:58:13
As long as the specs are the same you should be fine.

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May 1, 2012 at 12:43:58
You kind of never know. On the surface exact spec memory ought to work but there have been reports of failure. Some OEM board makers may post that some memory is known to cause issues.

In your case you can't get 2100 so you have to move up to 2700 or more to get a stick. If the bios fails to read the slowest ram and set it for that you could be in trouble. Generally the owners manual would tell how to populate the slots. This assumes that the board can support 1G (I assume it would). Also if you do have issues, the difference be 256 isn't that much since you are running it that way now. A 1G would be a fantastic improvement.

Text, talk, drive...CRASH.

Hang up and drive @#$%^^

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May 1, 2012 at 15:07:19
I don't recommend throwing too much money at a board that's over 10 yrs old. Geeks has 1GB sticks for $24 but IMO, that's too much to "invest" in an outdated system. But to answer your question, yes, you can mix RAM if you know what you're doing.

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May 1, 2012 at 15:45:36
Thanks, folks. I did a little reading and I found that Crucial has PC2700 memory. That's DDR333. It says you can use this but the speed will pick up from my DDR266, making the 333 run at 266, which isn't a big difference. I have a question in to Crucial to verify. In my opinion, just the 1GB will improve performance; if it has to go down to 266Mhz speed its not a problem. What do you folks think?

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May 1, 2012 at 17:26:45
You can't make your board run faster I'd bet. You simply run the 2700 at 2100 clock speeds. I have never heard of it to do any harm to run slower.

A 1G will speed it up. I can't say for sure if a system designed for Vista would be real easy to get xp to work.

rider is right that the price is the issue.

I have an old Dell server that memory used to cost $400. The price went down to $25 /Gig and I maxed it out but it was really a waste of my time and money. I just had some much invested in scsi drives and software on it that I felt I had to keep it going.

Hang up and live.

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May 1, 2012 at 18:21:42
If that motherboard is over ten years old, as riider suggests, it may not take 1GB sticks. Check your motherboard manual (if you still have it after ten years).

Please let us know if you found someone's advice to be helpful.

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May 2, 2012 at 08:45:37
My board takes up to 2GB max!

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