MEMORY UPGRADES ACP 1GB 533MHZ DDR2 PC2-4200 1.8V CL4 240PIN Unbuffered DIMM

These two cards mounted with absolutely no problem. They did require more pressure to get seated than I expected. Since I was afraid of using too much pressure I practiced with the old one a couple of times then snapped them right in.Installing them also gave me the opportunity to clean the cooling fan on the processor, it was really clogged. It probably would have overheated and failed eventually.I'm no computer whiz and when my computer booted right up and went to work I was very pleased.This occurred just before Thanksgiving and my poor memory overloaded computer has been happy ever since.

Cheap is as cheap does, I suppose. Since installing this in my iMac, I've had printing and other problems that I never had before. No response from the company about the issue. I will not buy from them again.

works great thats why I bought it I needed more RAM to play a few games I came to amazon and got it

This up-grade was exactly what I was looking for and increased the operating speed of my computer as I had hoped that it would.

Memory arrived quickly and worked great.

Pretty good upgrade and it's absolutely necessary since I am running Windows Vista. Just wished it's more affordable and more widely available at a lower price.