ram with different frequencies

[pango]

Hi

My Mobo is a P5WD2-E premium (OS is Windows 2000 Pro). I presently have 1 GB (2*512MB) of memory (OCZ, DDR2-533). I want to add 2*512MB of DDR2-667 (Kingston) or 2*1024MB of DDR2-667 (Kingston). Of course, I will install the ram on the proper dual-channel

Is their any problem having a system with ram running at different frequencies? From what I understand, my new ram will run at 533, right?

Presently my FSB: DRAM ratio is 3:4.

If I add 2*1024MB of DDR2-667, what will be new ratio?

Finally what will be the best investment vs performance?

Keep 2*DDR2-533 + 2*512MB of DDR2-667 for 58$ CAD?
Keep 2*DDR2-533 + 2*1024MB of DDR2-667 for 125$ CAD?
Get rid of the DDR2-533 + 4*512MB of DDR2-667 for 116$ CAD?

Thanks in advance for your answers

 

[einstein4pres]

Your RAM will all run at one speed. Either you'll overclock one or underclock the other. So long as you are running 1:1 or better, you're fine.

 

[mattman5170]

Faster RAM will automatically match the lowest speed RAM installed. So you are correct in assuming the new RAM will run at the slower speed.

I would just upgrade to 2*1024MB DDR2-667 Modules and not worry about the 533 modules. Your board supports those and memeory is really cheap right now.

2GB of Kinston Ram can be had for aproximately $40 US. Currently the US Dollar and Canadian Dollar are in parity so in your case this would be approximately $40 CAD.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820134046

 

[pango]

Thank you both for yout insight.