still no O/C

[g-relk]

my pc finally came back from the shop and i wanted to start to OC, but it wont go past an extra 70mhz over on the fsb, which was unstable anyway. im no overclocker, but i think its the RAM, the stuff was fairly cheap, and works well, but i want someone elses oppinion before i go and buy some new stuff im gonna go with the corsair pc6400 c4 (4 4 4 12) 2gb kit, im pretty sure its not the GPU. specs are listed below, any help appreciated. thanks in advance.

Note: i dont wanna push it too far I.E. 2.8ghz would be nice, anything over is a bonus.

[gvblake22]

Looks like you have some DDR2-800 RAM? You should be able to get a decent overclock without even overclocking the RAM at all. The default FSB of your processor is 533MHZ (quad pumped to equal 1066MHz), so your RAM is running much faster than the FSB of your processor. This means that your system is running on a divider that makes your RAM run 1.5 times faster than the FSB. So if you increased the FSB 70MHz to 603MHz without changing that ratio, the RAM would also be overclocked 1.5 times based on that new 603MHz FSB. Your RAM would run at 904MHz, which can be too much for some DDR2-800 to handle at stock timings and voltages (and also likely why you hit an overclocking "wall"). Try setting your CPU:RAM ratio to 1:1 so the RAM is run exactly as fast as the FSB. Then start increasing your FSB 5-10 MHz at a time and test every change. Report back with your results and we'll go from there. :wavey:

[g-relk]

wait... I'm a little confused about what you've said, and i thing ive mislead you a bit....originally i increased the fsb from 266 to 275, and left the multi at 8, to give the 70mhz over the actual speed (from 2.13 to 2.2ghz), and the RAM was clocked down to 667mhz at 4 5 5 15 from 800mhz at 5 5 5 18.... so you want me to clock the RAM down to 533mhz, then add 5 - 10 mhz on the fsb until i hit a wall, then post back again???

[Capper]

Yeah, lets try that...it seems either we're missing a simple setting, or theres more wrong here than meets the eye.

[g-relk]

oky dokey then

[Elysium]

If you can't get it, I'm thinkin' it's the RAM. That RAM you got is pretty cheap.

[g-relk]

nope that did it, i got it to fsb 350 mhz before it wouldnt boot, but clocked back to 340mhz and is now sitting at 2.76ghz, just gotta make sure its stable and its all good, thanks for the help. i'd like to go a little higher but how do i do it, though i dont wanna push it too far, max of say...... 2.9ghz. btw the RAM is doing 4 4 4 12 @ 680mhz yay

[gvblake22]

Well, what you can do now is see how high your memory can go. If you lower FSB back to 533, lower your CPU multiplier to 6x and increase your memory divider back to 1.5 (or DDR2-800), you should be able to start overclocking your memory without being limited by the processor speed. Do the same thing you did before with these new settings, just increase the FSB 5-10 MHz at a time and test each change. Eventually you will get to a point where you become unstable. Record this speed and all the settings/timings/voltages as that is the best your RAM can do at stock 4-4-4-12 timings. From here you can relax the timings a little (to say 5-5-5-12) and try to go even higher. Again, when you hit a wall with 5-5-5-12, record all your settings and speeds and post your results up here.