problems

[xrest]

well guys im not an expert in ocing system.I had an 3000(754 newcastle)and now an 3400(newcastle).the first shock came when i saw that in the tests an overclocked 3000 at 2.27 gave me more than a 3400.my ex 3000 without ocing gave me 3200 points and 3400 3600 points.is that good?
And as i told above i dont know ocing.im only raising the actual cpu frequency.for example 210*12.but its goes unstable.the HTT always is the same.what i have to do in order to raise the HTT?should i lower also the memories?
and a 3dmark05 score was 5530 is that a good score?because even with my 3000 i achieved 5500 points.i know that its not a big step a 3000 to 3400 but not even a differnce?and do i need a 550w?thanx helping me guys

3400 nc
msi 6800ultra
asrock k8upgrade 760gx
2x512 twin mos
350w

 

[Furen]

you lower your memory and you lower your hypertransport/ldt.

 

[xrest]

why when i set the multiplier to 11 or 9(default 12)everytime the cpuz show me that the multiplier is at 5x?and my system nearly crashed when the HTT was 230 and the core was at 1200(!)?oh jeesss i cant understand

 

[Vegitto]

Originally posted by: xrest
why when i set the multiplier to 11 or 9(default 12)everytime the cpuz show me that the multiplier is at 5x?and my system nearly crashed when the HTT was 230 and the core was at 1200(!)?oh jeesss i cant understand

Put the HyperTransport multiplier down. The FSB of 230 will be multiplied by 4. That explains the 1200. It can't go over 1000 stable.

 

[xrest]

from others that use cpuz i saw that the core has the same core number comparing with HT.2500 core/250 HT.is that right to put a 4x multiplier?also i hav a 350w.do i need a bigger?a 550w to do the job?

 

[Furen]

Ok, let me explain:

Your clockspeed is equal to your HTT times your multiplier (so 250x12, for example, is 3000MHz)

Your hypertransport (which is the frequency at which the cpu communicates with the southbridge) is your HTT times the hypertransport multiplier. This has to be less than 1000 (in some cases less than 800). If your motherboard allows you to change the hypertransport frequency in multiples of 200 (ie. 1000, 800, 600, etc) it basically means that you are controlling the multiplier (1000 = 5 x 200--the default htt).

Now, let's get down to business:

Your cpu uses the 5x multiplier because you have cool and quiet on, which underclocks your cpu when you are not using it too heavily. Want some proof? Run prime or superpi or anything that raises your cpu usage up to 100% and then refresh cpuz, that should give you your real frequency. I personally use cool and quiet when I'm only doing minor overclocks, but beware, if you change your vCore then you need to disable cool and quiet unless you raise the vCore with the percentage controls, rather than with VID.

Second, you will need to lower your ram's speed unless you know how to overclock ram, which is not that hard but it is somewhat complicated.

Here's a few settings that I like:

240x11 = 2.64GHz (this might be hard to do with stock voltage but there really isnt much headroom on a 3400+, since it already runs at 2.4)

DDR set to 333 = (240/200)*333 = DDR399.6

HT speed set to 800 (4x multiplier, basically) or 600 if you have problems.


Now, let me say this again: your cpu probably doesnt have much headroom for overclocking since it is already pretty highclocked (that's why people overclock 3000+s instead of 3800+s). You CAN overclock it but you'll have to raise the voltage and probably disable cool and quiet to get anything meaningful out of it (and you'll need some really good cooling 'cause that's a 130nm cpu and it runs quite hot). If you ask me I'd say you'd have much better luck overclocking your video card or something.

 

[Furen]

About your power supply:

Since you dont mention brand I'm guessing it pretty generic. I would say that you need to replace it badly. Both your video card and your cpu are rather insane power-hogs and 350w sounds a bit anemic. Remeber that your powersupply feeds all your hardware and if it blows up it can take some of your stuff with it. I'd recommend a decent brand power supply, it doesnt have to be a seasonic but please dont get a powmax (I've been hearing good things about a $50 rosewill 550w power supply, you might wanna look into that one).

EDIT: the reason why your 3000+ and your 3400+ score similarly is because 3dmark05 is pretty graphics bound. If you test 3dmark01 or 03 you'd notice a much bigger difference. Also, you'll also notice more of a difference in games and applications since the cpu will have more to do (ai, physics, etc).

 

[xrest]

oh thank u very much furen!!u hav a 3400 too?