Stuck on splash screen every time I attempt to overclock my GPU (PCI-E).

Exodias3219 · Jul 19, 2016

Hi! Every time I attempt to overclock my GPU, I can't boot to Windows or Bios. It's just stuck there and I need to pull the plug out then Clear the Cmos through the jumpers. The following are the specs of my computer:

Motherboard: Foxconn G31MXP-K
Proc: C2D E8400
Ram: 2x2Gb DDr2 800MHz
GPU: Gt 240 512mb 128bit (Unknown Manufacturer)
PSU: Generic 500w

I have the following overclock / current settings:
CPU: 390MHz * 9
Ram: 3-4-3-13 timings
PCIE : 120MHz

When I try to set PCIE to 121MHz (121+) it's still stuck on splash screen. I'm willing to provide pictures of the pages / screens in my BIOS.

Chugalug_ · Jul 19, 2016

Sounds like just general instability.
Revert the overclock and stick with stock speeds.
Do you have any plans to upgrade? Your hardware is severely outdated even for 720p gaming, so even if you were to get an OC on your graphics card it would have minimal impact.

Exodias3219 · Jul 19, 2016

Chugalug_ :

What I want to achieve is I want to OC my processor to 420MHz * 9. My processor doesn't proceed further than 400MHz if I don't add MHz on PCI-E (Based on my experience with this board / Proven). 121+ MHz on PCI-E wasn't successful, 119MHz and below is succesful.(100MHz is stock speed of GPU)

Shaun o · Jul 19, 2016

Don`t touch the Pci-e setting for clock speed from 100Mhz default.
It will throw the timing out between the card, cpu and the memory of your system as they are all connected to the main bus of the motherboard.

Any overclocking should be done to the internal parts or bits of hardware.
Not the bus speed of the system or interface it is using.

Exodias3219 · Jul 19, 2016

Shaun o :

What do you mean Sir? I was able to successfully overclock the PCI-E from 100MHz to 120MHz and able to play GTA IV for almost 3 hours.

btw, thanks for your help

Chugalug_ · Jul 19, 2016

Shaun o :

YUP.
Thats an absolute nope on my end too.
Simplifying it for you; if you overvolt your PCIE, your entire system will become unstable, and timings will be all over the place due to this instability.
Do not touch it, period. Even if you are an enthusiast overclocker.
Just because you were able to play GTA for 4 hours with no problems, does not mean it is not a risk.
It means that the bus (connects all the components) will gradually degrade, reducing performance between all components, and even in severe cases frying your motherboard (slowly).

Exodias3219 · Jul 21, 2016

I recently read the manual and I saw this:

Before you adjust CPU Clock, it is recommended to adjust PCIE Clock firstly. If you directly adjust CPU Clock, maybe the system will not work at the speed you adjusted or the system will hang.

Does this makes any sense?

Chugalug_ · Jul 21, 2016

The PCIE clock has nothing to do with the CPU in terms of how it performs.
That is linked to the GPU if anything.

Exodias3219 · Jul 21, 2016

Chugalug_ :

I'm talking about the Clock sir, There is no feature in my MB that says PCIE Voltage.

Chugalug_ · Jul 21, 2016

The same applies. Corrected now.

Exodias3219 · Jul 21, 2016

Chugalug_ :

Maybe in Conclusion, My motherboard isn't good for overclocking because It can't overclock the CPU Clock without adding frequency to the PCI-E Clock?

****What if I overclock the CPU with the Graphics Card removed then when I reached my desired frequency, reinsert the Graphics Card to the PCI-E?

Chugalug_ · Jul 21, 2016

Exodias3219 :

Your motherboard is not designed for CPU overclocking, although GPU OCs will be fine on any motherboard.
Just DO NOT alter the PCI-E clock speed whatever you do.

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