Memory upgrade

I have an old Fujitsu Lifebook T3010D laptop that I use as a backup to run some old business programs on. I am wanting to upgrade the memory by replacing a 256 module with a 1 GB. I have found 1 GB modules that run at either 266MHz or 333MHz. Can I use either and is one or the other preferred? Fujitsu does not have 1 GB memory for my computer for sale, but their 512 module was 266MHz. Can I mix 266MHz with 333MHz if I have 266MHz in the 512 remaining module? I will have 512 + 1 GB.

Thanks, Jim

 

Your Lifebook will accept PC2700 memory, which runs at 333MHz. Also, the most RAM memory you can install is 1 GB per slot, maxing out at 2 GB.

Do not try to run PC3200/400 memory, as normally is not compatible.

I recommend against mixing timings/bus clock speeds when it comes to memory as it can sometimes have adverse effects. If you want to use the old stick, go with the PC-2100/266. The data transfer rate is negligible between 266/333, and you won't really see a performance difference with the "naked eye". Also, "high density" memory (128Meg x 64) is the preferred type, and your motherboard will accept it.

The most important factor is purchasing a stick with a low latency. A latency of 2.5 is about as good as it gets for first generation DDR memory.

Hope this helps...

 

Greetings, jschwisow...

For reference, here's the Crucial.com page for your model.

 

Is there a way to check/know if what I have now is 266MHz or 333MHz? Crucial has 333MHz. What other brands should I consider if I need to get 266MHz? Or is brand not that important as long as I get "high density" memory (128Meg x 64) with a latency of 2.5. As I recall, some of what I found on a quick Google search would meet those standards.

 

You'll have to power down the laptop, remove the battery, and pop the cover for the memory. It should be clearly indicated on the stick itself. As always remember to be static free.

Sorry I misread your post, I thought the stick you had was 266.

Just remember you can't use PC-3200/400.

As far as brand goes, it's hard to screw up manufacturing RAM. Just make sure it's new, not a pull at this technology's age.

 

Thanks mekanic,

My installed 256 stick is 266MHz and the 512 is 333MHz, so the 1GB from Crucial should work fine.