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help with Phenom II 945 overclock

post #1 of 23
Thread Starter 
First of all hello to everyone! For the first time I'm trying to make a good cpu overclock, so I would need some of your suggestions.
Today I've read some guides online and I've started to overclock my cpu. I've raised the FSB frequency little by little from the bios:




In the end I've reached 229MHz x 15= 3435MHz with 1.36250 Cpu Over Voltage.
I've made a lot of tests, and I faced no problems with those values:




I got to say that the cpu cooler is a stock AMD cooler, and that before starting the overclock I've cleaned it well removing a lot of dust!
I've tried to raise the FSB from 229MHz to 232MHz keeping 1.36250 V, and I've had a BSOD. Since I didn't know very well what to do, I've changed only the "CPU/HT reference clock" and the "CPU Over Voltage" voices of the bios. I've left everything else to "auto", so I think the Asus Bios changed the other parameters for me. Moreover I've disabled the cool and quiet, but I didn't find out how to disable the video card of the motherboard (I don't know if it's right but I've read that it helps with the overclock).
Since I've never made a good overclock before, I'm a bit scared to raise the CPU Over Voltage over certain limits. Moreover I don't know if I've committed mistakes, and how the Asus motherboard changed the other parameters set to "auto". Should I change some things in the bios?
Do you think that with my motherboard and my AMD stock cpu cooler I can overclock the cpu another bit, without risking too much? How would you suggests me to proceed?
At the moment I got a GTX 460 glh. Do you think that my phenom II overclocked at 3.4 GHz would be a bottleneck if I decide to change it with a GTX 570 or 580? I have a full-hd display, and the truth is I'm doing all this overclock because I like it, and because I would like a good system to play Crysis 2 when it will be out I will gladly listen to any suggestions.
Thank you in advance
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post #2 of 23
Looks to me the wall you're hitting @230 is your RAM. It's very common around that freq. Try to lower the setting from Auto to 667 (Auto should be 800 on your sys). If Auto is 667 (1333 DDR) then try manually setting the correct timings for 800, cause it's likely that the BIOS is trying to run your RAM way faster than capable
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post #3 of 23
Hi and welcome!

I have the same CPU as you and our RAM is the same frequency, so I might be able to help a bit. You will want to set your RAM to run at x5.33 in order to make it so the RAM is not OC'd to what it cannot handle. Also try bumping up the voltage on the RAM close to what Corsair says it can handle (I think yours goes to around 1.6?). That should allow you to reach a higher OC without raising the voltage.

Also be sure to keep your HT Link as close to 2000mhz as possible, same with your Northbridge.You will need to take those off auto and to around a x9 or x8 multiplier. Also, take the CPU multiplier and keep it at 15 instead of auto.

However, until you get a better cooler, you will be extremely limited to your overclock. The CPU on a good cooler can go up to 1.55v without a problem, and you should be able to hit at least 3.7 with that. My chip is at 3.85 because I happen to get a good chip (every chip OC's differently). I have even hit 4GHz on my chip :-P

I would recommend getting a Cooler Master Hyper 212+, since they are darn good and only cost around $20 or less. But yes, if you get a 580 the 3.4 would bottleneck it. Not too sure about the 370, but if you want to upgrade your GPU, I would definitely recommend the higher OC. Anyway, I hope this helps and good luck!
    
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post #4 of 23
Thread Starter 
Thanks a lot for your suggestions. This is how the RAM is set with the "auto" option of Bios with the cpu frequency at 229MHzx15:




And this is how they're set up at 331MHzx15, while I was tring to stress the cpu with wPrime204:



Surprisingly with 331MHzx15, it made all the wPrime204 without errors. But only after a few seconds of CINEBENCH R10 64Bit, I've had once again a BSOD. Looking at the 2 pictures above I see that if CPU-Z is correct, the BIOS set the RAM in a similar way at 229MHzx15, and 331MHzx15.
And yes the BIOS overclocked my RAM because when I was at 3.0 GHz clock I clearly remember that the RAM timings were higher, but now the RAM frequency is lower.
You're right karmuhhhh my cpu cooler is really bad, but I do not change it not for a money problem, but because changing it would mean to remove the motherboard, and since I'm not really used to it, I might face problems and it would take a lot of time. Moreover I was planning to change cpu and motherboard for the next summer in order to buy Bulldozer or Sandy Bridge.
Anyway I think that since my cpu cooler is really bad maybe I should stop at 3.4 GHz, what do you think about it? Or I can raise "CPU Over Voltage" a little bit to hit 3.5 GHz?
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post #5 of 23
Dont risk cooking your cpu, if its getting to hot just settle with what you got until you got some spare cash to upgrade the heatsink.
Edited by nagle3092 - 12/20/10 at 11:49pm
 
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post #6 of 23
Quote:
Originally Posted by nagle3092 View Post
Dont risk cooking your cpu, if its getting to hot just settle with what you got until you got some spare cash to upgrade the heatsink.
Yup it is not neccessary for u to risk.
post #7 of 23
Quote:
Originally Posted by persona View Post
Surprisingly with 331MHzx15, it made all the wPrime204 without errors. But only after a few seconds of CINEBENCH R10 64Bit, I've had once again a BSOD. Looking at the 2 pictures above I see that if CPU-Z is correct, the BIOS set the RAM in a similar way at 229MHzx15, and 331MHzx15.
And yes the BIOS overclocked my RAM because when I was at 3.0 GHz clock I clearly remember that the RAM timings were higher, but now the RAM frequency is lower.
You're right karmuhhhh my cpu cooler is really bad, but I do not change it not for a money problem, but because changing it would mean to remove the motherboard, and since I'm not really used to it, I might face problems and it would take a lot of time. Moreover I was planning to change cpu and motherboard for the next summer in order to buy Bulldozer or Sandy Bridge.
Anyway I think that since my cpu cooler is really bad maybe I should stop at 3.4 GHz, what do you think about it? Or I can raise "CPU Over Voltage" a little bit to hit 3.5 GHz?
If you don't want to invest in a better cooler then yes, definitely stop at 3.4. I would not risk moving the voltage up unless there was sufficient cooling. For stability you can always try different combinations of multiplier and FSB tuning, but don't kick it too high. Be sure to watch your temps and you should be fine.

Btw, most cpu cooler do not require the removal of the motherboard. You just pop off the stock one and put on the new one, no fiddling required. However, if you are going to upgrade to Sandy Bridge or Bulldozer, you will need a new Motherboard regardless (your mobo will probably work with bulldozer, but you would definitely want a 8+2 power phase for better OCing abilities).
    
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post #8 of 23
Thread Starter 
Quote:
Originally Posted by nagle3092 View Post
Dont risk cooking your cpu, if its getting to hot just settle with what you got until you got some spare cash to upgrade the heatsink.
Yeah I think maybe I should enjoy my cpu at 3.4GHz. Anyway With the 332x15MHz overclock I've reached 55 degrees. I don't know what temperatures my cpu can handle without risk to damage, or to shorten a lot his lifespan (anyway for the most part my cpu has low temperatures because I use my pc especially for internet).
So if I have understood well probably I should not upgrade my GTX 460 to a 570 or 580 if I keep my cpu at 3.4 GHz, because I risk to spend money and to do not use the full gpu potential.
Have you got suggestions for my ram settings with the cpu at 3.4 GHz? Maybe I should raise a bit timings and frequency?
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post #9 of 23
Thread Starter 
Quote:
Originally Posted by karmuhhhh View Post
If you don't want to invest in a better cooler then yes, definitely stop at 3.4. I would not risk moving the voltage up unless there was sufficient cooling. For stability you can always try different combinations of multiplier and FSB tuning, but don't kick it too high. Be sure to watch your temps and you should be fine.

Btw, most cpu cooler do not require the removal of the motherboard. You just pop off the stock one and put on the new one, no fiddling required. However, if you are going to upgrade to Sandy Bridge or Bulldozer, you will need a new Motherboard regardless (your mobo will probably work with bulldozer, but you would definitely want a 8+2 power phase for better OCing abilities).
Thanks a lot for the suggestion. I'm reading your post now because we've posted almost at the same time, so I was writing a reply when you wrote this
Anyway to reach 3.4GHz I've already raised the voltage to 1.36250 V. Do you think this value is too high for my cpu cooler? Maybe the 55 degrees I've reached are too high and I should make a little step back?
EDIT:
If you were in my position how would you set up the RAM parameters? Or they're fine as they are now as I do not have crashes at 229MHzx15?
Really thanks a lot!
Edited by persona - 12/21/10 at 12:08am
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post #10 of 23
Quote:
Originally Posted by persona View Post
Thanks a lot for the suggestion. I'm reading your post now because we've posted almost at the same time, so I was writing a reply when you wrote this
Anyway to reach 3.4GHz I've already raised the voltage to 1.36250 V. Do you think this value is too high for my cpu cooler? Maybe the 55 degrees I've reached are too high and I should make a little step back?
55 Degrees is actually the maximum you want it to go, so you are spot on perfect. Leave it at that and you should be golden! Just be sure to run some nice stability tests to make sure it won't crash mid-game or anything.

Btw, do you have the C2 or C3 revision of the 945? You can check by looking at CPU-Z.
    
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