I am overclocking a e5300 to 4.0ghz and i am wondering if ddr2-800 will let this work. the price of 800 and 1066 are the same, but the timing of 800 is 4-4-4-12 and 1066 is 5-5-5-15. would i need 1066 to achieve a 4.0 clock? if not, can i downclock 1066 and also lower the timings?
Both should be fine for that OC,i would go for DDR2 800 with CL4 timings because for me lower timings are more important but some users prefer higher speed than lower timings but as i said both are fine and will do the job.
As you will only need to run your FSB at 308Mhz to hit 4Ghz with your CPU, either set of RAM will work equally well.
Heck, you could run DDR2 667 with your intended overclock and never have to overclock the RAM.
Get which ever is cheaper or is from a better manufacturer.
Both will work equally good for you.