Dual-Channel DDR2

[JHaislet]

What's the consensus with dual-channel DDR2 on the T43/T43p?

It's my understanding that the Intel PM's @ 533mhz FSB have about 4GB/s of bandwidth between the CPU & memory controller (regardless if your running in single or dual channel mode).

Single channel DDR2 (PC2-4200) also has about 4GB/s as I understand it & dual-channel DDR2 has around 8GB/s.

So, is there ANY conceivable difference upgrading a single 1GB DDR2 sodimm to TWO 512MB DDR2 sodimm's if cost isn't an issue?

Also, does the dual-channel configuration introduce any more latency into the memory system over it's single channel counterpart?

[nrj45]

Hello,
You're right. CPU isn't really able to use the bandwidth difference. Only the GM version of the chipset (with integrated graphics) will show a real difference. Because graphics really require this bandwidth.
I don't know about latency.
My opinion is to keep the 1GB module. You can see in my signature that i'm about to receive a T43p with this configuration. And i prefer keeping the liberty to upgrade the memory later (perhaps will 1GB memory in 3 years be comparable to 256mb today ???).
Hope i could answer a bit your question.
Have a nice week end

[fbrdphreak]

More memory is better than more memory bandwidth for what you're talking about. Buy a 1GB stick and put another one in later