PC-1066 memory modules on a Msi 850 Pro2

[Hashte]

Hello there !

I have a MSI 850 Pro2 motherboard (http://www.msicomputer.com/product/p_spec.asp?model=850_Pro2LE&class= mb]).
At this moment I have 4 memory modules, each of 64 MB PC-800 (Samsung). Given the fact that I have recently found a reasonable offer for 2 PC-1066 modules of 256 MB each, I'm seriously thinking about an upgrade. But I have a little question: will my system work afterwards with a configuration like 2x64MB PC-800 + 2x256 MB PC-1066 ?
Thank you very much

P.S. I have to mention that my CPU is a P4@1,5 GHz, core Willamette with a FSB of 400 MHz.

 

[black_ops]

use 1 or the other don't mix and match your ram as you will likely get ram bleed, pending on thre os you're running i would say a min 1gb of ram would be enough, though if you got the cash and you have 4 ram slots i'd max out whatever the max ram the mobo can take...

if running xp or vista the more ram you got the better it runs!!!!