Hi, my name is Travis and I recently upgraded my sons computer with 2GB of memory. However, in order to do that I had to remove the standard 512MB memory stick that was in it. I would like to use that memory and put it in my computer. My computer currently has 512MB of RAM. The memory stick I removed was from an emachines desktop model W3619 and the label on the memory stick shows it is 512MB PC2-4200. My computer is a Sony Vaio desktop model PCV-RZ34G. According to what I read, my computer has 4 banks that can hold up to 512MB in each bank for 2GB max. Can I add the removed memory stick from my sons computer and use it in mine? Thanks

What type of DDR memory.Look on the Ram from your sons computer and yours.Do they both say either DDR or DDR2?If yes than you can.

I'm not 100% sure. The sticker on the removed 512MB stick says 512MB 1RX8 PC2-4200U-444-12. It doesn't say whether it is DDR or DDR2. However, I checked a Best Buy memory link and it recommended DDR2 for the e-machine and I out my model in on another memory website and it says I need DDR memory. Still confused?