In theory yes. As long as you don't try to run them in dual-channel configuration it should work. But ram can be picky sometimes, its not too uncommon for instability to occur even using the same brands. If possible it would be best to buy the same ram speeds that you have. That way you also eliminate the possibility your motherboard has compatibility issues with the new speeds. Or completely replace what you have with newer speeds.
There are many places where one can purchase a DDR PC2700. For example one can be purchased at Amazon or Best Buy. One could also be purchased from Crucial.
ddr266/pc2100 and ddr333/pc2700 are interchangeable.
No. They are different generations of DDR.
The PC2700 1GB card costs around twenty dollars. A PC2700 1GB card can be purchased online from sites like amazon and ebay, and stores like Best Buy have them for sale.
A lot.
The definition of PC2700 is a type of RAM memory chip that has been used in computers for a while. 512MB is the amount of memory that can be found in the computer.
333 Mhz
No and no.
333 mhz
The PC2700 DDR RAM was introduced in 2000, having been in development for four years since 1996. It was intended to improve the speed of data transfer.
PC2700 refers to the speed of the memory, not the capacity. You would have to look at the label on the stick to find the capacity. It's usually measured in megabytes or gigabytes.
One could purchase a 1 Gigabyte PC2700 online at Crucial, Memory4Less, eBay and Amazon. NewEgg or Tiger Direct also sell them to those who are interested.