Originally Posted by Ericko
This is a big mess
. I remember I read that zd8000 supported Dual Channel without the need to match the memory sticks, now it says that you DO need to match the sticks. So, WTF is going on??? I'm getting a little dissapointed with HP
. However, their printers are just great and those notebooks have very nice configurations with a very reasonable price. I just think they shuold train their tehcnical support guys a little better.
Anyway, I'm goin to buy 1GB DDR2 PC4200 stick from newegg.com. I will be sad if the laptop doesn't run in Dual Channel, altough I've read that the improvement of Dual Channel is just about 10%.
Yea, the technical knowledge of their tech support people seems to be lacking. Being able to mix and match stick sizes and still have DC work goes against the how dual channel works.
Dual channel functions by treating the memory bus as being 128bits wide rather than 64. It does this by being able to adress both sticks at the same time (each stick is 64bits wide). To be able to mix and match sticks the memory controller would have to address the ram on a chip by chip basis rather than a stick by stick basis, and I don't believe thats possible.
I wouldn't sweat too much about performance loss, it won't be that big (I'm thinking the dv4000 would be gpu limited anyways). However, it isn't too much more expensive to get two 512mb sticks and you could keep your stock sticks in the cupboard.