2GB memory to buy for OC. Help!

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I dont understand memory at ALL! ive been trying for 2 months now. basically i need someone else to tell me what to buy. i already bought corsair 3200 but found out i cant overclock with them. This is what i want. I would like to overclock my opteron 146 to 2.8 - 3.0ghz. How would i best go about doing that with 2gb of ram and keeping gaming performance at its best. keep in mind i have no prior experience to overclocking cpu so am a little put off with the g.skill hz opinions that say it took them ages to set up as they wouldnt work at default timings. i wont know what to do if they dont start up. But i am very tempted by them (why do some say the g.skill zx is the kit to get? is that just for low overclocks? its only pc3200! i dont understand). can some nice people please name some memory 2gb kits and tell me why they think they are the best choice for my criteria? thank you all!!!!! this is the final piece to my building puzzle and cant start till its done

P.S. almost forgot:
opteron 146 0545
asus a8n32
antec 550w
 
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but what i think though im not sure is correct, is it not that if i get pc3200 then i can only get to about 250fsb and 146 multiplier is x10 so that is a maximum clock of only 2500ghz? im sure there are ways around it but i dont know yet, i presume its this divider thing that i hear but i dont know if that would affect performance. if that is the case then why not just buy £100 cheap ram and run them on a divider if any ram can hit 3ghz with dividers?

Also i have the corsair 2gb pc3200 xms 2-3-3-6. is that bad for overclocking an opteron to 2.8-3.0ghz? is it worth the rma?
 
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thank you that helped a lot, but i dont see why my ram cant do 250? is it because it is pc3200? and i heard that corsairs dont like running on dividers. im just getting worried as my time to rma it is running out and i cant turn on my new rig till march when i get one of the new graphics cards, by then it will be too late to rma anything, i only have an agp 6600gt right now in this old rig. this is why i am trying to do it all blind right now with no physical experience infront of me and its hard. so 2 questions - which would be faster, if they both overclocked to 2.8ghz, the corsair xms3200 or the g.skill hz? and secondly, would it be worth returning the corsair and going through the effort and time and worry, for this g.skill ram? considering its cheaper, probably better at overclocking or so i hear, but possibly finicky and has heat issues?
 
ok so if i bite the bullet and narrow it down to either the g.skill hz or zx. is this my choices?

a) hz = will be able to clock opteron 146 to its full potential 2.8-3.0 with slower timings with 250>fsb
b) zx = will not clock opteron as far but will leave better low timings (is this correct? if so who cares? its only 2fps and 2 seconds of game loading faster! am i right in thinking this? surely this cant be right, as the higher clocked opteron from the hz would MORE than make up for the slight delay in loading and totally surpass it with processing power
c) zx = somehow use a divider and keep the low timings 2.5-2-3-6 AND manage to clock the opteron fully. is this correct with what dividers do? do they affect timings? i heard a lot of reviews say that the zx dont always clock as well as people say, usually only 230

is this all correct? with a multiplier of x10 which would be best for gaming, NOT benchmarking?
 
ballistix die. if not after 10 seconds then in 3 months. maybe i should put this another way to make it easier, tell me if i put on the 1st divider (not sure if that is 133 or 166) then what is the required mhz i need for that? for instance 1:1 to get the cpu to 2800 id need 280mhz x 10 multiplier. if i used the first divider, the one that doesnt lose as much performance, then what values that the ram can do am i looking for? 230mhz? 250mhz? is the first divider 20%? so if i wanted to get 2800mhz out of the cpu id need ram that can do 280mhz-20% thats a ram that can at least do 224? am i right? so all i need to do is go around looking for any ram that can do 224 with the lowest timings? please god let me be right cuz i give up after this lol. its too hard. thanks for the help guys! thank you so much! your patience is welcoming.
 
Urika! thank god. so is 166 the best divider to go for and if failing that, 133? why does everyone not do that then? because i hear a lot more about the g.skill hz pc4000 than the zx pc3200.
 
that memfreq from street above solved the riddle as i had something to tinker with and see how the numbers played on each other. thanks street! and thanks uncle for hangin in there ;). all i need to do now is find a ram that will certainly hit 233 - 241mhz in pc3200 and if it doesnt go you just up the voltage a bit or raise the timings? something like that? im getting it now. any ram youd recommend that can do that? ill probably go with the g.skill zx pc3200 but its kinda hit and miss. if there was ram that would DEFINATLY push at least 240 for a little more money id go for that for safety.
 
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