Whats more important in Memory?

Is it better to have high frequencies like say 1200mhz with timings of only 5-5-5-15, or too have memory with lower frequencies such as 800mhz with timings of 4-4-4-12, at least for gaming?
 

PC eye

banned
The higher fsb seen at 1.2ghz would make an overall difference on everything while different latencies seen between are noticed only with the same fsb. The 4-4-4-12 would be somewhat noticable at 800mhz over the 5-5-5-15 seen with another set of memory at 800mhz. The gap between the 1/2ghz and 800mhz fsb is how much more data is processed in one clock cycle.
 
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