Always go for speed to overclock the cpu as much as possible and go 1:1 fsb:memory ratio. Dial in the best timings after you reach full fsb speed. Don't let the RAM hold your overclock back.
would it be a smart idea to just throw thw ddr2 1066 with the higher timinsg in there even if I cant lower the timings after?
Is it obviously better to get DDR2 1066 with 5-5-5-15 timings?
also which brand of ram is known for allowing higher overclock speeds and lower timings? I have used alot fo corsair but it as never allowed big overclocking thresholds.
Memory overclocking is a science unto itself. Why do you say you can't loosen the timings? Basically you sacrifice memory timings (loosen) for speed (FSB). What cpu, motheboard - where do you want to go oc wise? We need more info. If you can't change the memory timings as you need, you've bought the wrong motherboard and/or ram.
i can change the timings, im talking about the ram not running stable with lower timings.
I have hit 3.2ghz stable with ddr2 800 without touching the timings just tweaking the ram voltage a slight bit and messing around with the fsb and mutiplier.
I am shooting for 3.6ghz my temps are still so I want to squeeze a little more speed.