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Phenom II 965 OC Help (Again) - Page 2

post #11 of 18
This is just my opinion, but you're trying to run before you can walk... You're changing too many settings at once so figuring out what is causing you instability is nearly impossible.
Isolate things and overclock them separately.

This is the method that I've used since I started and it has worked for me... It is not a blueprint for overclocking, but it gives you a set of things to do so that you can isolate each part of the HW and overclock them separately.

Quote:
Originally Posted by xXSebaSXx View Post
LOL....

There really is no secret to this stuff bro... You just have to have the time/patience to test and then test some more. I've had this chip for almost eight months and I have been at this since the day I got it; always tweaking and trying new settings.... Having said that; there is a method that I always follow and it has served me well.

1. Find FSB Max -> This is just finding what FSB/htref the chip/board will run at while the rest of the settings remain as close to stock as possible. So I raise FSB and lower multipliers for CPU, HT Link, RAM, CPU NB so that those stay near stock speeds, save and boot.
If it boots into OS I reboot and go back into BIOS to raise it some more. I do this until the chip/board will not boot.

2. Once I found FSB Max I start playing with multipliers to get to the clock speeds I want. I don't touch voltages yet. This is how I found that my chip will do 3800 MHz at stock voltages (1.3V), but it will need 1.35V to go to 3850 MHz.
The secret here is finding the balance between FSB, multiplier, voltage that will get you the clocks you want.

I often see people come to the forums and ask "How much voltage do I need to give my chip to get to 4GHz?" when the correct question they should be asking is "What's the least amount of voltage I need in order to get to 4GHz and be stable?"... To be honest with you; to me the word "Stability" is a dirty word anyway... I overclock for benchmarking, so for me if it runs the benchmark and allows me to capture a screenshot before crashing; I'm OK with it.
I'm not interested in finding out if my chip will do 4 hours of Prime95 Blend at any of my settings; I run this 955 at 3850 MHz 1.35V for daily use and that is more than enough for me, it idles at 35C and full load doesn't bring it past 50C ever; that is with a Venomous X Black and a 260CFM fan that runs at 10% speed most of the time and will go up to 20% if I load the CPU to 100%.

Sorry for the looooong reply, but there really is no secret to overclocking; just go at it and tweak, tweak, tweak until you get what you want.
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post #12 of 18
Thread Starter 
Thanks man,

I found out what was wrong with my OC.

I was adjusting the NB instead of the CPU/NB Voltage after I bumped it to around 1.35625V it's very steady. Now i'm just dialing back the CPU Voltage to try and get lower temps.

Well it just BSOD again so I bumped CPU/NB up to 1.375 if it runs stable then i'll leave the dang thing alone =\\
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post #13 of 18
Thread Starter 
Welp, 1.35625 CPU/NB & 1.509375 VCore.

What I don't understand is that my CPU use to not have to have that much voltage to get stable.

Can somebody explain that?
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post #14 of 18
I would suggest starting from stock and bringing the cpu up gradually. The one thing I noticed is that CPU/NB Volt may be a tad high. I can run my 955 at 4GHz with 1.4V and CPU/NB at 2600MHz with 1.25V without a problem. I understand that not all chips are created equal, but the method for finding their peak performance settings is pretty much teh same.... It seems to me you're going at it backwards though... Don't start from high voltages and lower them gradually, go the other way around until you find the minimum voltage where the chip will be happy.
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post #15 of 18
Thread Starter 
I can't get it to run stable without a high CPU/NB it passed IntelBurnTest but I went to run Bad Company 2 and it died so I put one more volt in it and now it's working again.

I don't know why I have to have such high voltages to get it stable, but oh well.
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post #16 of 18
What bsod code are you getting?

A 965 C3 should have no trouble getting 4.0 under 1.5v.
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post #17 of 18
Thread Starter 
I dunno, I stopped trying to deal with it because it keep BSOD whenever I would play video games.

Long story short, 32BIT OS takes less voltage for stability then 64bit.
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post #18 of 18
Quote:
Originally Posted by trenth View Post
Long story short, 32BIT OS takes less voltage for stability then 64bit.
How do you come to this conclusion? I've tested every OS from XP all the way up to Server 2008 in both 32 and 64 bit flavors and never found the 64 Bit OSs to need more voltage than their 32 bit counterparts... The only OS I found to remotely resemble this situation is XP, but that is only at the "Loading" screen where XP will load the CPU to 100% for a few seconds... This happens on 32 and 64 versions of XP though... And it's not a matter of needing more voltage to be stable, but of it tending to crash at the "Loading" screen more often than other OSs (This only applies when overclocking to the "edge" of stability and not for daily use overclocks).

I've said it before and I will say it again... I think you've jumped into the overclocking thing way too far into the deep side of the pool (Changing too many settings at once)... I would suggest going back to stock settings and then going one setting at a time...
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Microcenter Value RAM OCZ Vertex 2 Maxtor STM3200820AS Seagate ST316002 3AS 
Optical DriveCoolingCoolingOS
Asus DRW-24B1ST Thermalright Venomous X Black Sanyo Denki - San Ace 9SG1212P1G01 120mm x 38mm... Win 7 Ultimate x64 
MonitorMonitorKeyboardPower
Dell U2311H Dell E193FP Dell OEM keyboard Corsair TX850V2 
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