Hehe, I must disagree with you, my friend
First of all, thank you all for your comments and help
In the pc800 rdram concern, I think you are right when you say 3x multiplier can be run with this motherboards, but in some sites (extracted from intel webpage
"PC800 RDRAM* memory is offered with two different specifications, PC800-40 and PC800-45, both of which run at the same frequency and have identical bandwidth, but have a subtle difference in internal timing. The Intel® 850E chipset supports the PC800-40 memory when running at 533 MHz system bus. The Intel 850E chipset supports both the PC800-40 and the PC800-45 memory while running at 400 MHz system bus. "
I think that even with this, the 45ns modules will work, like you tell...
In the second part, you say intel i850e motherboard, like the new D850EMV2, will never work at more than pc800 speeds even when using pc1066 rdram; well, I am not with you here, look at this website:
http://www.hardocp.com/article.html?art=MzE2LDE=
Here, you have a review of this motherboard, manufactured by intel, where the use of pc1066 rdram makes most applications run 5-7% faster than when using pc800 rimms, so I think this motherboard ACTUALLY supports this new rdram
Thanks for your time and farewell