Need Help Upgrading P4T533c

[Tetor]

Perhaps someone could try to answer a few questions.

I have an Asus P4T533C MB with an Intel P4 2.26 and 512MB of PC1066 RDRAM
and the latest BIOS. I am considering upgrading to an Intel P4 3.06 and
adding another 512MB of RDRAM. Do you think that the upgrade is worth $400
or should I just get a new system? Are there any benefits to using a newer
model MB/Memory configuration? I have just purchased a new Geforce 6800
that is NOT PCI Express so that option is not an issue. Is it possible to
mix ECC and non-ECC memory modules? Is there anything I should know before
attempting to upgrade this MB? Also does anyone know of any reputable sites
that sell PC1066 as I'm having a difficult time finding one.

[Rob]

No, don't mix ECC and non-ECC. Crucial appears to sell the type of memory you're looking for, and that's the brand I always use. Keep in mind that RDRAM is installed in paris.

This page should help you. It includes a link at the bottom for the Crucial Memory Advisor which can help you find the RAM you need.
http://www.mysuperpc.com/pmu/computer_memory_upgrade_faq.shtml

Generally speaking, I think your computer has a lot of life left in it and that the upgrade you have in mind is worthwhile.