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[Beginner] Overclocking Phenom II X4 955 BE

post #1 of 6
Thread Starter 
Hi,

I start trying to overclock my CPU, but im struggling with some Problems.

My Setup:

Mainboard: Gigabye 770TA-UD3 (Rev1)
CPU: AMD Phenom II X4 955 BE
RAM: 8gb ValueRam DDR3 (Kingston)
GPU: NVIDIA Geforce GTX 570

Cooling:
CPU: Corsair H110 with two 140mm Fans at 900 - 1000rpm
Case: 200mm Front Bottom at around 600rpm; 120mm Back Top regulated by the CPU-Fan slot (usually at 700-1000rpm)


What I tryed so far (according to many threads I read) :


Disabled Cool & Quiet
Disabled C1E
Disabled Virtualization

The BIOS Settings start at:


1.400V (CPU)
200 MHZ (FSB)
16x (Multi)

Idle Temperature in Win8, measured with Coretemp: around 28°C.

I slowly increased the Multiplier at 0.5 steps followed by a Prime95 Torture Test (In Place Large FFTs). If I got a Bluescreen, usually a few Minutes of torturing the CPU, I increase die CPU Voltage in 0.025 Steps, the minimum increase which is allowed inside BIOS.
I finished with a multiplier of 19 and a Voltage of +0.075 (1,475V at 3800Mhz). The Temperature stays stable at around 48-51°C for 45 minutes.

I tryed to re-enable Cool & Quiet, but it doesn't work anymore. Is it a common problem? I do not want to run at full speed all the time, so I tryed to set K10stat. It regulated the CPU well at low stress. But when I started Prime95 again, it crashes. I had no clue whats the Problem, so I reverted everything.

My questions are as follows:
  • Is this the correct way on overclocking this CPU? Compared to other results found here and in other Boards they have much better output at lower Voltage. Also they often changed the FSB drastically. Should I change both, the multi and the FSB? Does my Mainboard limit the overclocking capability? I want to reach 4ghz stable at maximum 50-55°C.
  • Is it a common problem that Cool and Quiet does not work with overclocked CPUs? I also read about a program mentioned in this forum. Whats the way to go? k10stat or PhenomMsrTweaker?
  • I do use the PC not only for gaming but also for work. Do I use the tools mentioned above to limit my CPU (running at full speed all the time is something I do not like) or should I use overclocking profiles? If I should use profiles: The mainboard seems to not support profiles, is there another way, e.g third party software?
  • Do I also need to change other settings to accomplish the task? Northbridge frequency, etc.
  • Whats a safe maximum voltage? 1,4V is pretty high compared to other results and this came out of the box.
  • Whats a safe target Temperature? Some people mentioned 60°C. Other say I should not get higher than 55°C.


I hope someone can help,

Thanks in advance.
post #2 of 6
ok the max temp of the cpu is 62c and yes if ur overclocking you need to increase the nb also what kinda of cooling do u and i have my cool and quiet and its doesnt mach a diffence
post #3 of 6
Large FFT is not the best test to run when you are just trying to find the max stable core speed, as it puts nearly as much strain on the IMC and memory as the CPU cores, and failures can indicate stability issues in any of these areas.

When you are trying to find the maximum CPU frequency, you'll want as few variables as possible stick to small FFT as that a CPU core/cache only stress test.

Don't bother with Large FFT until you are in the fine tuning stage/system stability stage, as you will have to tweak CPU-NB and memory settings etc to eventually get this stable.

As for cool n'quiet, for Phenom II it appears to stop working above above a multiplier of 18.5 or thereabouts although I don't know the technical reason for this.
post #4 of 6
It can start getting tricky once it starts getting unstable. A solid trick I've found to work fairly well (after disabling all you already have) is leave everything stock, and slowly up the multiplier until it starts to become unstable. At which point, slowly up the voltage until that multiplier is stable. And continue until a safe point.

I have found this to work more often than not, especially if you don't mind only OCing just a bit. If you want to push it to it's limit then you will have to get more involved, obviously messing with NB and the like.

I got my Phenom II 965BE up to 3.8 by just upping the multiplier, but I was lucky. With an SSD and 16 GB of RAM that computer is crazy fast. I also got my FX-8350 up to 4.6 using just the multiplier and CPU voltage. I think I'm at like 1.46v while stock is about 1.38v.
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Black Phantom
(17 items)
 
The Shadow
(10 items)
 
XtremeFX
(10 items)
 
CPUMotherboardGraphicsRAM
Core 2 Extreme QX9650 XFX nForce 790i XFX GeForce GT640 2GB x 2 SLI G.Skill Ripjaws 1333 
Hard DriveOptical DriveCoolingOS
WD Velociraptor 10,000rpm HP DVD-RW Corsair H60 Liquid Cooler Windows XP 
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XFX 550 watt  Thermaltake V4 Black Edition 
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post #5 of 6
Thread Starter 
Thanks for the tips so far.
Quote:
Originally Posted by FatedFrenzy View Post

It can start getting tricky once it starts getting unstable. A solid trick I've found to work fairly well (after disabling all you already have) is leave everything stock, and slowly up the multiplier until it starts to become unstable. At which point, slowly up the voltage until that multiplier is stable. And continue until a safe point.
You mean switch everything which is on "auto" to "normal" (or the default value)?
Quote:
Originally Posted by FatedFrenzy View Post

I have found this to work more often than not, especially if you don't mind only OCing just a bit. If you want to push it to it's limit then you will have to get more involved, obviously messing with NB and the like.

Target frequency should be around 4ghz and hopefully not frying the cpu wink.gif


Another technique I've read so far was increasing the multi and vcore until it gets unstable. After that slightly increase the FSB one or two steps. Is it necessary to decrease the northbridge, etc. before increasing the FSB (starting at a high multiplier)?

Does anyone has a working tip with the dynamic clock? I don't need 4ghz when working with e.g. word or excel wink.gif
Is dynamic switching preferred over a manual switch? Or should I increase and decrease the frequency right before and after cpu heavy tasks? Does such scaling have impact on stability of a previously tested and stable system?
post #6 of 6
Thread Starter 
I tried some BIOS configurations so far. At the moment I stuck at 3.6ghz.

This is what I've done so far:

I've tested every configuration with OCCT running for 1 hour.
Code:
FSB x Multi    | CPU-NB | HT-Link  | VCORE   | Temp (Load, °C) | Comment
200 x 16       | x10    | 2 ghz    | 1.400 V | 41              | Bios Default
200 x 18       | x10    | 2 ghz    | 1.400 V | 42              | Last stable configuration at 1.4V
200 x 18.5     | x10    | 2 ghz    | 1.425 V | 43              | OCCT for 1 hour without failure

This was my last stable configuration. I didn't manage to get to 3.8ghz or higher. What I've tried so far:
Code:
200 x 19       | x10    | 2 ghz    | 1.425 V | 44              |
200 x 19       | x10    | 2 ghz    | 1.450 V | 44              |
200 x 19       | x11    | 2 ghz    | 1.450 V | 45              |
200 x 19       | x11    | 2 ghz    | 1.475 V | 47              |
202 x 18.5     | x10    | 2,02 ghz | 1.425 V | 44              | All of them BSOD after ~15min OCCT

Any recommendations what I should aim for? Increasing the Voltage to achieve 3.8 (and 4) ghz or should I stick at a multiplier of 18 and slowly raise the FSB?
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