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Phenom II 955 BE Overclocking - Voltage Help @ page3 - Page 2

post #11 of 27
Thread Starter 
on games not even using %100 CPU load such as crysis, or BFBC2 would huge OC even change performance in anyway? Or did it reach a point where im just happy to have higher clocks

I have a after market n520 (similair to the v8) cooler with a cooler master high flow case with 6 fans. Super cold inside so i can really push the limits for air cooling on what the CPU will allow me too.
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post #12 of 27
Quote:
Originally Posted by 2JZ View Post
what do you mean by "forcing all but 1GB of RAM" how do i do that?
Okay. Here's what I personally do.

Prime95 (x64 edition).

I hit the "Blend" button.
Next, I hit "Custom" (this forces blend settings, but the option to change them).
Next, I change Memory to use (in MB) to total RAM - 1GB.

So if you have 4GB of RAM, change that value to 3072MB. If its 8GB total, set it to 7168MB. If that passes 12 hours, you're as stable as you ever will be.
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post #13 of 27
Thread Starter 
i see, makes sense. Ugh im getting tired, if it passes on these "auto voltages" can i just leave it and consider it safe? Seeing that under load it doesn't even go near 50 degrees. I want to leave it on overnight. Its that or i will crank the multiplier even higher and leave the auto voltage to do the grunt work for me
Edited by 2JZ - 5/6/11 at 10:47pm
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post #14 of 27
Quote:
Originally Posted by 2JZ View Post
i see, makes sense. Ugh im getting tired, if it passes on these "auto voltages" can i just leave it and consider it safe? Seeing that under load it doesn't even go near 50 degrees.
I would go into BIOS and set the voltage manually to closest to what CPU-Z states under load for vcore of CPU. After you pass stability test try and lower CPU voltage if you like it or go for higher clocks your call.
    
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post #15 of 27
Thread Starter 
Quote:
Originally Posted by Rick Arter View Post
I would go into BIOS and set the voltage manually to closest to what CPU-Z states under load for vcore of CPU. After you pass stability test try and lower CPU voltage if you like it or go for higher clocks your call.
Sounds good, do higher clocks really do anything though in terms of gaming performance

and i always thought if the vcore is placed at 1.55v it will run at 1.55v no matter what you set the clock speed? Auto voltage is saying 1.4000v and im doing 1.392V on CPU-Z. Does that mean thats the minimum and going less is not a good idea? Or am i looking at the wrong thing
Edited by 2JZ - 5/6/11 at 10:57pm
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post #16 of 27
Quote:
Originally Posted by 2JZ View Post
What is chimp exactly and what team would i join
Link is in my signature.

Also on voltages yeah trial and error. Overclocking is a tedious and addicting hobby. Some chips will run on very little volts some need a lot.

Being you are at 4 now I would set your voltages at manual and if the voltages are not outrageous keep them.

Then try to lower them and test to see if it is still stable. Go a little at a time and only one voltage at a time. Otherwise you don't know where the instability came from.

I would run some shorter tests about 10-20 minutes just to see. Most will fail by then. Keep doing this for both your vcore and nb voltage till you find the lowest it is stable at. Then run a long test to confirm.

Normally I do it the other way around though. I usually continue to raise fsb until instability then give it some more volts then continue on until I hit a wall where it takes a ton of voltage for a small increase. I would recommend that if you plan to try and push farther.

GL. Also here is a guide that may help you a little as well.
http://www.overclock.net/amd-general...ing-guide.html
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post #17 of 27
Thread Starter 
Quote:
Originally Posted by gildadan View Post
Link is in my signature.

Also on voltages yeah trial and error. Overclocking is a tedious and addicting hobby. Some chips will run on very little volts some need a lot.

Being you are at 4 now I would set your voltages at manual and if the voltages are not outrageous keep them.

Then try to lower them and test to see if it is still stable. Go a little at a time and only one voltage at a time. Otherwise you don't know where the instability came from.

I would run some shorter tests about 10-20 minutes just to see. Most will fail by then. Keep doing this for both your vcore and nb voltage till you find the lowest it is stable at. Then run a long test to confirm.

Normally I do it the other way around though. I usually continue to raise fsb until instability then give it some more volts then continue on until I hit a wall where it takes a ton of voltage for a small increase. I would recommend that if you plan to try and push farther.

GL. Also here is a guide that may help you a little as well.
http://www.overclock.net/amd-general...ing-guide.html
1.392V does not sound outrageous at all! People are running 1.55v just to get these clocks! Is the FSB a bottleneck? It appears most people leave the FSB stock, i read reviews saying 205 is the common threshold (200 stock). BIOS even outlines anything above 205 in red. Should i not put any "red" settings in BIOS?
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post #18 of 27
Thread Starter 
Ok i am just leaving the exact same settings as seen in the first post, im to tired. Im heading off to bed, be back on in 7 hours after the 6 hour prime95 torture test is completed. I will be sure to include some results. Until then guys.
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post #19 of 27
Quote:
Originally Posted by 2JZ View Post
1.392V does not sound outrageous at all! People are running 1.55v just to get these clocks! Is the FSB a bottleneck? It appears most people leave the FSB stock, i read reviews saying 205 is the common threshold (200 stock). BIOS even outlines anything above 205 in red. Should i not put any "red" settings in BIOS?
I didn't say that it was. I said keep the voltages IF they are NOT outrageous. There is always the chance you can lower them as well and still be stable especially if they went there on auto. This will lower your temps as a result which is always better. Auto tends to overshoot and usually by a large amount in my experience.

I haven't played much on the AMD chips so I can't speak to their individual fsb performance. I probably worded my last post a little off. I generally keep pushing the overclock farther until it becomes unstable then give it some more volts. Whether it is through fsb or multiplier. Sorry for the confusion on that.
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post #20 of 27
Give this thread a good read/study http://www.overclock.net/amd-general...ing-guide.html
It'll teach you the basics plus give you a real good path to follow.

You should start by manually entering your Dram timings and voltage which you'll find the ratings either on the Dram itself or with the packaging that it came in.

Set as many items in the bios as you can to stock settings that are manually entered rather than leaving them on auto. This will also help.

Start by studying the link above, and work just one area at a time. It takes time to OC a system and even thou many will offer you there settings, it's always best to find your systems actual needs and demands to reach an optimized OC. Every system (even with the exact same components) has different needs and to just throw voltages at it without testing will not result in a good stabilized OC.
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