Non-certified RAM issues have always affected Apple computers. We will show that those problems could arise due to both the specific design of the RAM controller used by Apple and also by the poor quality of the memory chips often used for "no name" RAM modules .
The chronic RAM module compatibility issue is coupled to the usual habit of Apple to deliver desktop and laptop computers with a ridiculously low amount of memory installed by default . Originally, this was a way for Apple to allow Apple resellers to generate a larger profit margin by selling Cupertino-designed computers (hardware margins have also been really tiny). However, the launch of the physical Apple Store and the open war between Apple and its resellers have amplified the problem that there is not enough RAM installed by default, which is the main cause of slow OS responsiveness, GUI fluidity, and in general, the overall performance of Apple-branded computers. This is especially true since OSX and its Unix-based kernel are , by definition, RAM hungry , leading users to look for alternatives to the Apple-certified modules .


Full story in http://hardmac.com/articles/56/

I also would like to know the price for KTA pc2700 kingston ram.
especially the 1 gig modules.
heard too many bad review on KVR.
sigh...

Ok... i've just installed 2 gigs of KVR rams in my 17" powerbook. it's the DDR2700 versions. got it for 850RM for 2 sticks of 1 gig rams.
it works like a charm.
I've even Memtest is for a whole night. put heavy renderings in maya with it. all seems to be no problems at all.
I almost bought the ram from crucial or OWC.
It's true that it's worth trying out at Lowyat shops b4 making the purchase.
atleast it works for me.

So far. no hang, no lag and nothing i can see un-usual.
Now who wanna buy my original apple ram (512MB DDR 2700).