Overclock.net › Forums › AMD › AMD CPUs › Having trouble overclocking an AMD Phenom II x4 C3 beyond 3.6 Ghz
New Posts  All Forums:Forum Nav:

Having trouble overclocking an AMD Phenom II x4 C3 beyond 3.6 Ghz

post #1 of 17
Thread Starter 
So here is my system:

Scythe SCSK-1100 100mm Shuriken Rev. B 3 Heat Pipes CPU Cooler
BIOSTAR A880GU3 AM3 AMD 880G USB 3.0 HDMI Micro ATX AMD Motherboard
G.SKILL Ripjaws Series 4GB 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model F3-10666CL9S-4GBRL
AMD Phenom II X4 955 Black Edition Deneb 3.2GHz Socket AM3 125W Quad-Core Processor HDZ955FBGMBOX

I want to get this CPU OC'd as high as I stably can, which I read is around 3.9-4.0 GHz. Problem is that anything over 3.6 GHz requires me to clear my CMOS.

I increase the multiplier to 18x to get that high, and to proceed, I increase it to 19x and 20x. I have even increased the core voltage as high as 1.45v so far. Still no boot.

Memory is running at stock timings. Is that my problem? Do I need 1600 memory or do I need to (and can I?) run this at 1600 or better timings?

Help greatly appreciated!

PS I really hope this is in the right place. I don't want to clutter your boards and from what I saw, this was the best place to post. Let me know if I was incorrect.
Edited by V1R4G3 - 2/7/12 at 5:15pm
post #2 of 17
Have you tried upping the CPU-NB voltage? Also are you tweaking the FSB at all? What are you peaking out at temperature wise? Deneb's don't like to hit 55c at load when overclocking, they can safely go up to 61c but the cooler the better.

Edit: Oh and welcome to OCN thumb.gif You can also use this guide to help you Slappa's AM3 overclocking guide.
Edited by Kratthew D. Kraids - 2/7/12 at 5:24pm
    
CPUMotherboardGraphicsGraphics
i7 5930k MSI X99A SLI Krait Edition MSI TF III 7950 MSI TF III 7950 
RAMHard DriveHard DriveHard Drive
Rip Jaws 16GB @2400MHz Samsung 850 Evo SSD Seagate 250GB Hitachi 1TB 
Optical DriveCoolingOSMonitor
El-generico Cooler Master Hyper 212X 7 ultimate 64bit Tripe Viewsonic 22", 5760x1080 eyefinity secks. 
KeyboardPowerCaseMouse
Logitech G15 HX750i Phanteks Enthoo Pro Logitech G402 
Mouse Pad
ಠ_ಠSolid oak deskಠ_ಠ 
  hide details  
Reply
    
CPUMotherboardGraphicsGraphics
i7 5930k MSI X99A SLI Krait Edition MSI TF III 7950 MSI TF III 7950 
RAMHard DriveHard DriveHard Drive
Rip Jaws 16GB @2400MHz Samsung 850 Evo SSD Seagate 250GB Hitachi 1TB 
Optical DriveCoolingOSMonitor
El-generico Cooler Master Hyper 212X 7 ultimate 64bit Tripe Viewsonic 22", 5760x1080 eyefinity secks. 
KeyboardPowerCaseMouse
Logitech G15 HX750i Phanteks Enthoo Pro Logitech G402 
Mouse Pad
ಠ_ಠSolid oak deskಠ_ಠ 
  hide details  
Reply
post #3 of 17
Thread Starter 
I am not getting temps because the systems won't even load beyond 3.6 GHz. From everything I've read, I should have no trouble doing so. Thus far I've only increased the multiplier. I will take a look at this guide you posted and see if I am missing anything.
post #4 of 17
You might require a small voltage bump to get the system to load at 3.6
    
CPUMotherboardGraphicsGraphics
i7 5930k MSI X99A SLI Krait Edition MSI TF III 7950 MSI TF III 7950 
RAMHard DriveHard DriveHard Drive
Rip Jaws 16GB @2400MHz Samsung 850 Evo SSD Seagate 250GB Hitachi 1TB 
Optical DriveCoolingOSMonitor
El-generico Cooler Master Hyper 212X 7 ultimate 64bit Tripe Viewsonic 22", 5760x1080 eyefinity secks. 
KeyboardPowerCaseMouse
Logitech G15 HX750i Phanteks Enthoo Pro Logitech G402 
Mouse Pad
ಠ_ಠSolid oak deskಠ_ಠ 
  hide details  
Reply
    
CPUMotherboardGraphicsGraphics
i7 5930k MSI X99A SLI Krait Edition MSI TF III 7950 MSI TF III 7950 
RAMHard DriveHard DriveHard Drive
Rip Jaws 16GB @2400MHz Samsung 850 Evo SSD Seagate 250GB Hitachi 1TB 
Optical DriveCoolingOSMonitor
El-generico Cooler Master Hyper 212X 7 ultimate 64bit Tripe Viewsonic 22", 5760x1080 eyefinity secks. 
KeyboardPowerCaseMouse
Logitech G15 HX750i Phanteks Enthoo Pro Logitech G402 
Mouse Pad
ಠ_ಠSolid oak deskಠ_ಠ 
  hide details  
Reply
post #5 of 17
Thread Starter 
My BIOS has been volting my CPU at 1.40 by default, and 3.6 has been stable for quite some time. It's anything over that fails to boot. I am reading now that upping the multiplier and throwing volts at is not the best way to go. Currently going through overclocking the RAM, NB, and THEN the CPU. Any feedback would be great, I'll check back frequently.
post #6 of 17
Find a stable overclock and try to boot into windows, record your load temperatures after running prime for 10-20 minutes and let us know.
    
CPUMotherboardGraphicsGraphics
i7 5930k MSI X99A SLI Krait Edition MSI TF III 7950 MSI TF III 7950 
RAMHard DriveHard DriveHard Drive
Rip Jaws 16GB @2400MHz Samsung 850 Evo SSD Seagate 250GB Hitachi 1TB 
Optical DriveCoolingOSMonitor
El-generico Cooler Master Hyper 212X 7 ultimate 64bit Tripe Viewsonic 22", 5760x1080 eyefinity secks. 
KeyboardPowerCaseMouse
Logitech G15 HX750i Phanteks Enthoo Pro Logitech G402 
Mouse Pad
ಠ_ಠSolid oak deskಠ_ಠ 
  hide details  
Reply
    
CPUMotherboardGraphicsGraphics
i7 5930k MSI X99A SLI Krait Edition MSI TF III 7950 MSI TF III 7950 
RAMHard DriveHard DriveHard Drive
Rip Jaws 16GB @2400MHz Samsung 850 Evo SSD Seagate 250GB Hitachi 1TB 
Optical DriveCoolingOSMonitor
El-generico Cooler Master Hyper 212X 7 ultimate 64bit Tripe Viewsonic 22", 5760x1080 eyefinity secks. 
KeyboardPowerCaseMouse
Logitech G15 HX750i Phanteks Enthoo Pro Logitech G402 
Mouse Pad
ಠ_ಠSolid oak deskಠ_ಠ 
  hide details  
Reply
post #7 of 17

Have you tried switching the board? redface.gif
Do this for two reasons:

  1. The 880G chipset is not known to be as suitable for overclocking due to the IGP presence having effect on ref clock abilities
  2. The board you have is not designed for overclocking at all, the 3+1 power phase should not be used to run any processor above 125W TDP.  Your even slightly overclocked 965 may be passing safe thermal CPU power supply/conversion capabilities of this board.  Return the processor to stock speed and make use of the AMD stock cooler to ensure VRM cooling, and you should pursue a different board more suited for overclocking for doing so.  Read more about this at the link in my sig: About VRMs & MOSFETs
post #8 of 17
Thread Starter 
Oh, I see, what boards what you recommend in the low to mid range (cost)?

And you think my aftermarket cooler is a threat to my stock CPU?
post #9 of 17
I have a TA890FXE I could sell you for very very cheap, cheap being that the top PCI-e slot has a pin that is slightly bent and doesn't recognize a graphics card if you insert it. I am sure it is fixable but If you are interested I'll let it go for next to nothing.

Edit: I should note that the second X16 slots works perfectly.
Edited by Kratthew D. Kraids - 2/7/12 at 5:58pm
    
CPUMotherboardGraphicsGraphics
i7 5930k MSI X99A SLI Krait Edition MSI TF III 7950 MSI TF III 7950 
RAMHard DriveHard DriveHard Drive
Rip Jaws 16GB @2400MHz Samsung 850 Evo SSD Seagate 250GB Hitachi 1TB 
Optical DriveCoolingOSMonitor
El-generico Cooler Master Hyper 212X 7 ultimate 64bit Tripe Viewsonic 22", 5760x1080 eyefinity secks. 
KeyboardPowerCaseMouse
Logitech G15 HX750i Phanteks Enthoo Pro Logitech G402 
Mouse Pad
ಠ_ಠSolid oak deskಠ_ಠ 
  hide details  
Reply
    
CPUMotherboardGraphicsGraphics
i7 5930k MSI X99A SLI Krait Edition MSI TF III 7950 MSI TF III 7950 
RAMHard DriveHard DriveHard Drive
Rip Jaws 16GB @2400MHz Samsung 850 Evo SSD Seagate 250GB Hitachi 1TB 
Optical DriveCoolingOSMonitor
El-generico Cooler Master Hyper 212X 7 ultimate 64bit Tripe Viewsonic 22", 5760x1080 eyefinity secks. 
KeyboardPowerCaseMouse
Logitech G15 HX750i Phanteks Enthoo Pro Logitech G402 
Mouse Pad
ಠ_ಠSolid oak deskಠ_ಠ 
  hide details  
Reply
post #10 of 17

An aftermarket cooler is a huge thread in that it results in total removal of VRM cooling by bringing airflow over the motherboard and not onto motherboard components, causing them to easily operate well beyond spec.  With no cooling to the VRMs heat does not dissipate efficiently since the chips in question that are fragile, active and run hottest (MOSFETs) retain heat which can build up over time.

 

The heat and lack of dissipation has an extra effect of reducing supply capacity on the MOSFET transistors as heat levels rise, which brings the gap between safe and VRM failure even closer.  Combined with low quality transistors or transistor setup (3 transistors in this case, such a design which is responsible for a large amount of failures on other boards) and low transistor count (as a result of the limited 3+1 phasing), trying to power high TDP CPUs such as the 965 it makes for a setup that may actually be particularly dangerous when you push beyond the specs. Other companies like ASUS and the GIGABYTE, some of which use even higher quality transistors in different packages with confirmed low RDS (on) transistors, still do not rate 3+1 phase count boards for >95W TDP CPUs.

 

The A880GU3 is an A-series board and Biostar does not design this board for overclocking purposes.  While VRM cooling would make it a lot safer to run your system it does not address the issue of a low capacity VRM setup with limited phase count, low transistor design quality and output capacity.

 

What is a more approximate estimation of the money you can spend for a more overclocking-ready board?

New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › Having trouble overclocking an AMD Phenom II x4 C3 beyond 3.6 Ghz