you have a 945 mobo, i don't know if they overclock like the others... somebody with more core 2 exp can fill you in but its my guess that you hit a fsb wall with that mobo on a 945 chipset.
I am only familiar with RAM dividers rather than memory multipliers, so I don't really understand what speed this is making your memory run at, BUT.....
If you had your memory in a 1:1 ratio with your FSB, when you get up to a 290 FSB, your RAM is running at an effective 580 MHz which is over its rated speed of 533 (real speed of 266). You therefore need to increase memory voltage to 2.1V, or if you're already there, try loosening your timings to 5-5-5-15 and this should help.
Your ram speed is rated at 533mhz. With the ram multiplier of 2.5 you have it running at 725mhz. That is probably you problem. At a multiplier of 2 it will run at 580mhz allowing a better overclock.
And when u overclock more again you have to up your memory voltage to run higher than 533, look for reviews. Usually memories overclocked more than .3 volts have problems with stability and heat. So once you get to the max on your memory lower the multiplier. That means back it down to 2, or even 1.5 as your speeds get up there.
That ram is just fine Id say he could get to 2.4 ghz. Thats 343mhz fsb just below the motherboard limitation of about 350mhz and the ram will only run at 686 hes got it at about 725 now. And with a little more voltage he could go higher.
ok in bios i put the memory multiplier down to two like said and raised the voltage on cpu memory and fsb and still only could get 290 fsb to run stable.
using Easytune 5 in windows i can only get 310 fsb stable.
So any help would be good as i still need help as this motherboard can supposidly get 350
This is what you are going to do:
RAM timings 5-5-5-15, 2.3v
vcore 1.375
Memory multipler 2.00
raise vMCH (NB) to the max (yes, this is safe)
raise vFSB a couple notches
Dont use Easytune... Clockgen in any case to extract up to the last Mhz.
Yea dont use those useless OCing utilities, they raise voltages here and there without telling you and make you think youve got a stable OC. then you look at your temps and start to smell something strange coming from the pc.
This is what you are going to do:
RAM timings 5-5-5-15, 2.3v
vcore 1.375
Memory multipler 2.00
raise vMCH (NB) to the max (yes, this is safe)
raise vFSB a couple notches
Dont use Easytune... Clockgen in any case to extract up to the last Mhz.
problem is in my bios i cant see anywhere i can change memory timings.
but i am looking into buying some Geil Ultra ddr2 6400 with 4,4,4,12 timings in the new year.
