I will be using an asus G41 chipset motherboard with E8400 processor, probably at stock speed or a bit overlocked @ <=3.4 GHz (cpu clock between 333 to 400).
But I want to run 2x 4GB RAMs as tight as possible, 7-7-7-24 or better. So, will a pair of 1600MHz RAM be ok ? RAM clock speed will be 800MHz, right ? while cpu clock will be 333MHz. Will there be any synchronization issues or the system will run fine ?
Your links don't show what ram sets your going with, they just show a page with all ram choices.
You may want to go with the 1333mhz ram so that the buss will be in sync and your overclock will go smoothly.
When talking about ram performance and useing one speed over another ther is no real performance difference that will be noticeable between 1333mhz and 1600mhz except that you think there is because 1600mhz sounds faster than 1333mhz. It is but the difference is not noticeable and the more important thing is having the system stable so that you dan do what really makes a difference and that is overclock. People can sometimes get stuck on thinking that ram makes a big difference in performance and it doesn't, your computers performance will be nearly the same with 1333mhz or 1600mhz.
So if your computer will run fine and stable with what you end up doing to the 1600mhz (timmings) then go for it, but it seems to me that the overclock will be more important.
what i am basically doing is upgrading my c2d with more RAM, but will probably get a new system after 1.5-2 years, if i think more power is needed. and its too uncertain whether these RAMs will be of any good then even with oc. so, wont spend extra amount if unnecessary.
among gskill and corsair, which is better in this category ? is there any difference between the ripjawsX/vengeance and the basic RAM from gskill/corsair, other than the heatsink (there will be slight oc, as much as this asus g41 permits probably ~3.4ghz for E8400)?
The G.Skill and Corsair ram are pretty much equal in performance and quality. Corsair did just release a premium set that I have been looking at and trying to figure out if it's much better then the Vengence.
By the time your ready or the new system your talking about DDR4 will be out.