Quick question. I bought a new AM3 motherboard and processor and was just wondering if I'd notice a difference between 4GB (2 x 2GB) DDR2 800 (what I currently have) vs DDR2 1066 (what I plan to buy, if it is worth it). I also read somewhere on here that the newer AM3 cpu's have trouble running 4 DIMM's of DDR2 1066?

It depends on how much you are getting them for and if you are selling your old RAM to fund it. Thats the way I work, It would be of help when you overclock as you will have more headroom to play with....but in real world applications you will not see a huge difference if at all...yes in benchmarking n s**t.

But it has a knock on effect...if you get the 1066 and clock it better therefore you machine as a whole will be quicker...but I would not pay big money.

Yeah thats what I thought. I do not plan on overclocking, but yes I would sell this memory to buy a 4GB 1066 kit. Doesn't sound like it is worth it though.. might as well keep it.

If you didn't have the 800mhz already I would say go for the 1066 but since you don't, there's no real point.

you might see a 1 - 2 FPS difference in games depending on what is bottlenecking your system... not worth the cost of replacing it.

The ram is not worth the money. Forget about upgrading it.