No and no.
No. PC 266 and PC2700 refer to your bus speed, how fast information is passed through the computer. Your computer can only work as fast as its bus. If your bus speed is 256, no matter what the rated speed of the memory you put in, it will only pass information at the rated speed of the computer. Having said that, it is possible to "over clock" your bus. I don't recommend that, so I will only say that if you want to do that, Google the information.
no
ddr266/pc2100 and ddr333/pc2700 are interchangeable.
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.
PC6400
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.
The PC2700 SODIMM 1GB RAM chip can be purchased from a number of places. The Amazon and eBay websites offer the lowest prices, however, it can also be purchased from Offtek and Mr Memory.
4GB of PC2700 or PC3200
You wouldn't notice the difference if you are just doing casual computer use, for example: Internet Browsing, listening to music, or word processing. However, if you are playing graphically intensive games, then you would notice a difference. The higher the PC number (PC2100, PC2700, or PC3200) then the better it is. Just be sure to buy the memory that is compatible with your motherboard... that is if you are planning on buying memory.
The 3200 rating on the MB is just the ram limit you can put just about any speed you want in the board, depending on the speed ram chip you buy is the speed you will get. also know that is you use more than one stick of ram and they are different speeds ex. 1 256mb of pc2700 and 1 256md pc3200 the board will limit the ram speed to the slowesed chip meaning that you ram would acualy be running at the pc2700 speed even thow you have the pc3200 chip in the board ! have a good day
Yes you can use. PC means DDR1 266mhz ram, PC 2700 means DDR1 333mhz ram. you should not use in combination of both PC2100 and PC2700 because due to Bus frequency mismatch some boards will not support.
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.