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Phenom II 945 can't reach 4 Ghz?

post #1 of 23
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Hi guys. I'm having problems reaching 4Ghz on my 945 Phenom. I managed to get it to 3.6 using fsb of 300 and multiplier x12 with auto voltage of 1.392 but that is as far as it goes. I tried for 4ghz with 15x267, 14x286, 13.5x300 with voltage of 1.375, not auto. It either crashes or freezes at loading windows. The HT was set at ~2400 and rams at 1666. I'm pretty sure i've got the wrong timings on the ram so i'm asking for your advices.
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post #2 of 23
Drop your RAM:FSB multi down, get your RAM speed back to 1333. Also, try 1.42v and 4GHz.
    
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post #3 of 23
You need a lot more voltage for 4Ghz, and C2 stepping are generally a lot worse for overclocking
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post #4 of 23
Quote:
Originally Posted by thealex132 View Post
You need a lot more voltage for 4Ghz, and C2 stepping are generally a lot worse for overclocking
this.

and you had 3.6 with 1.392v but you tried 4ghz with only 1.375v ?
as xd 1771 would say, you're doing it wrong.
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post #5 of 23
Thread Starter 
I was afraid of going auto voltage on 4Ghz cuz it might draw too much power and "cook" itself . I am though running on a FZ120 cpu cooler so i guess ill try that voltage.

Currently i am running on optimized settings only the ram is at 1066 and the voltaj is 1.25 instead of auto. The RAM:FSB ratio is 3:8 at the moment and i was wondering how and what value should that ratio be.

Thanks
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post #6 of 23
Generic 1333 CL9 RAM, may be holding you back
Quote:
and you had 3.6 with 1.392v but you tried 4ghz with only 1.375v ?
as xd 1771 would say, you're doing it wrong.
I think...this

I wouldn't overclock too far on that mobo either, knowing it to be a 4+1 power phase with low quality & known problems - and the 945 C2 is a 125W to begin with
post #7 of 23
i have the same cpu, and i couldnt get it stable past 3.7. i got it up to 3.8/3.9, the system would boot and run, but whenever i put stress on the system, i would get an immediate crash.


to the OP, i think your best bet, if you want better performance, is to one day do what i plan on doing and get an i5/i7.
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post #8 of 23
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
Generic 1333 CL9 RAM, may be holding you back

I think...this

I wouldn't overclock too far on that mobo either, knowing it to be a 4+1 power phase with low quality & known problems - and the 945 C2 is a [b]125W[b] to begin with
My CPU is of 95W tdp according to these 2 programs and the shop which i bought it from.
And my mobo is a weak one? Sad to hear that

Btw, i'm not gonna keep it 24/7 at 4ghz, i just want to "leak every drop of water off of it" in some benchmarks. But if it isn't possible, i understand.

Edited by WarpSx - 4/3/11 at 12:34pm
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post #9 of 23
i hope i can help
try this:

up the cpu volts to 1.5
up the fsb to 268
drop the ram divider by one notch,
up the ram volts if necesary,mines takes quite abit of volting to be stable,you may be more lucky.
run some tests,drop cpu volts if poss,the up your cpu-nb volts and divider.
let me know if you encounter any trouble.

3.6 is a nice easy one if 4 isnt possible,then you can milk the cpu-nb for all its worth
240 fsb,1.3v cpu,
leave ram divider and up the volts to the ram a touch,
give that cpu northbridge a spanking!
Edited by MightyMission - 4/3/11 at 12:35pm
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post #10 of 23
Quote:
Originally Posted by WarpSx View Post
My CPU is of 95W tdp according to these 2 programs and the shop which i bought it from.
And my mobo is a weak one? Sad to hear that

Btw, i'm not gonna keep it 24/7 at 4ghz, i just want to "leak every drop of water off of it" in some benchmarks. But if it isn't possible, i understand.

Useless screenshot is useless.
Turn off C'n'Q. The old Phenom II 945 is 125w. The motherboard you have is not the best for overclocking, I would recommend going max 3.8Ghz @ 1.45v
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