Pcie Bus overclocking

[Thelosouvlakia]

I was messing with the bios settings the other day and I noticed that I can overclock the PCIe bus. It's an old board on the LGA775 with the G31 chipset Since my graphics card (HD7770) is PCIe3.0 "enabled" and my motherboard is still pcie.1.1 could overclocking the PCIe bus raise the bandwidth a bit so I can get more out of my graphics card?

Should I overclock the PCIe bus or that would cause serious instability?

 

[YouWhat]

You can overclock it for a slight increase, but it won't really be noticable, and yes, it can cause system instabilities all over place if not done correctly.

Just take your time in doing it and make sure you research it fully before even attempting it, there should be plenty of videos and guides all over place with a google search.

 

[Thelosouvlakia]

Does someone know how much more bandwidth I get per Mhz?

 

[KING_OF_SAND]

Does someone know how much more bandwidth I get per Mhz?

You will NEVER notice it. It is not even worth it. IF you get lucky and can get 10Mhz more (which is VERY unlikely you MAY if you lucky again see a ONE frame difference.

 

[Master&Puppet]

I'm pretty sure the bandwidth increase would be linear, so 1% per Hz. However you have to already be saturating the bandwidth to notice. Maybe running multiple modern cards on a Pcie 2 in x4 would do it.

 

[Thelosouvlakia]

My Board supports PCI-e 1.1 and it has 1 x1 slot and a x16 slot where my card is. That's why I was hoping for some more bandwidth so it doesn't get bottlenecked too much

 

[KTM_RULZ]

If I remember correctly the first thing to suffer will be your hard drives, with lots of errors when writing. The big thing of that time was that you could increase the CPU frequency WITHOUT influencing the pci one...

 

[KING_OF_SAND]

If I remember correctly the first thing to suffer will be your hard drives, with lots of errors when writing. The big thing of that time was that you could increase the CPU frequency WITHOUT influencing the pci one...

That's not always the case. Just the sata connectors connected to that bus. Which in most cases it is.