Using 667mhz and 800mhz

[browndog23]

I currently use a stick of 1GB DDR2 667mhz and two sticks of 512MB 667mhz RAM in my current system (2GB total).
If I were take all of these out and put 2 sticks of 1GB 800mhz in there instead would I be able to use any of the 667mhz RAM? If so, would it be worthwilfe or should I just sell the old 667mhz on Ebay? My motherboard supports both types of RAM

Cheers

 

[jitpublisher]

Your board will clock all your memory to match the slowest part. Also, to run in dual channel mode (on most boards) you have to install memory in pairs.

 

[browndog23]

Thanks for your response. Would I be better off having the two 1GB sticks running at 800mhz than the two 1GB sticks and the two 512mb sticks running at 667mhz??

Thanks

 

[agentsmith957]

Definately. Even if the 800Mhz sticks were only running at 667MHz, the benefit of running in dual channel mode would be worth it. Other than that, you probably would not notice a big difference between 667MHz dual channel and 800MHz dual channel, especially if your bus speed is 1066MHz or 1333MHz, since the 1:1 FSBRAM ratio would have your memory running at 667MHz or slower anyway.