fsb mobo and ram speed question

your ram speed does not match your FSB speed to have a 1:1 ratio. an FSB of 1333 yields a 1:1 ratio if the ram is set at 667MHZ. an FSB of 1600 will run 800MHZ ram with a 1:1 ratio
 
cool thanks alot for the replies

is there any ram with 1333Mhz? i could not find any on dabs.com
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Not in DDR2. DDR3 has that speed though. Your current DDR2-800 RAM will be plenty fast.
 
If you have DDR2 800 RAM running at 800 megahertz, in dual channel mode it can transfer up to a maximum of around 12,000 megabytes per second. If DDR2 800 RAM is in single channel mode it will transfer up to a maximum of around 6,000 megabytes per second.

From my understanding, RAM transfer rates over the dual channel PC2-6400 rate (12,000 megabytes/second) will likely just hit a bottleneck somewhere else in your system so you would likely see little performance increase with higher RAM transfer rates using current technology. Am I correct in this speculation?
 
From my understanding, RAM transfer rates over the dual channel PC2-6400 rate (12,000 megabytes/second) will likely just hit a bottleneck somewhere else in your system so you would likely see little performance increase with higher RAM transfer rates using current technology. Am I correct in this speculation?
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Yes. The FSB is slower so even if you can push data from the RAM to the memory controller at >1333MHz QDR, it can only go from the memory controller to the CPU at that speed..
 
As long as your FSB doesn't run at twice the speed of that ram, you won't notice any difference. It might even run slower because of the higher latencies.

I'd suggest the max you should get is 1066mhz and underclock that to the good corresponding speed. But you can also just get 800mhz and make your FSB run at 1600mhz. You'll get a fine enough OC out of that.
 
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