Quick RAM advice

I've scoured the internet to try and understand the whole FSB/RAM ratio, I think I have my answer, I just need confirmation that this is indeed correct.
System - Dell XPS 710
Processor - Intel Core2 CPU 6600@2.40GHz
FSB Speed - 1066mhz
Current RAM - DDR PC2-5300 4x1GB

I want to obviously up my speed, I'm think about jumping from 4 to 8gb's. Crucial's website says my system can handle DDR2 PC2-6400, DDR2 PC2-5300, or DDR2 PC2-8500.

I can't quite figure out which would be the best choice, the 6400 or 8500. Im thinking PC2-8500, but I'm not sure. I'm not trying to overclock, I just want a fast, stable system. Any help is appreciated!



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  1. Welcome to Tom's Hardware...

    What is the cost difference? If the cost are relatively close, I would go with the PC2-8500, otherwise stick with PC2-6400. Also, I would look at timings (CAS Latency) as well. If you can get PC2-6400 with tighter timings at less cost, this is the better route to take. Timings play a bigger role in memory performance versus the speed (MHz).
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