Tweeking up the PCIe to between 107-112 can improve stability in an OCed system. Beyond 112, according some can damage the Vid Card.

 

Yeah, I keep my around 107, seems like a good area

 

Quote:

Originally Posted by The Duke Tweeking up the PCIe to between 107-112 can improve stability in an OCed system. Beyond 112, according some can damage the Vid Card.

Raising the PCI-E bus won't damage the card, however, because the PCI-E and Sata bus are linked it could potentially corrupt or throw off any Sata drives in the system and cause a loss of connectivity.

As a general rule of thumb stay below 120.

 

I have mine on auto..

 

Quote:

Originally Posted by dannyyboii I have mine on auto..

If used on manual and set to anything under 120 it will improve gaming in regards to fps as the PCI-E has a higher bus speed.

 

I set mine to 107MHz

Seems to work fine allowed me to go from

Core Clock 492MHz ---> 497MHz
Memory Clock 1.16GHz --->1.18GHz

SLI -- XFX6800XT

 

Quote:

Originally Posted by iamme I set mine to 107MHz Seems to work fine allowed me to go from Core Clock 492MHz ---> 497MHz Memory Clock 1.16GHz --->1.18GHz SLI -- XFX6800XT

Gave you tried using coolbits?

It will allow you to overclock much higher than that.

 

i dont think it really lets you oc higher just gives you better performance, i use to run mine at 112 and it worked out good with out corruption or anything,

and i thought it didnt help with stability and could actually hinder stability if you got it wrong

 

interesting, I'll give this a shot tomorrow. and btw, are the asus A8N-Es any good? I hear the chipset fan breaks after a few month of use. also have heard the same with A8N5X. I'm thinking to dump this mobo.

 

i keep mine on 110

 

got the latest dirvers and it let me max my core and memory

Core 700MHz

memory 2.8GHz

it runs but its not stable so ill take the bus to 110 and see if that helps

optimal as determined by nvidia control panel is

Core 600MHz

Memory 2.5GHz

Thats nearly double just by updating my driver and yes I use coolbits

 

I was curious about this PCI-e frequency. I had the system set to auto, when I changed it to 110Mhz I noticed no change or increase in stability. 3DMark score is EXACTLY the same.

The only thing I am guessing is that it allows a slightly higher OC ability.

 

This thread is two years old, start a new one mate.

And yes, it usually just allows for better stability, and typically only on AMD systems.

 

Well since this was bumped, I might as well add/clarify...
Increasing the PCIE Frequency only increases the frequency of the bus... the information being relayed back and forth from the video card will never require that much speed so increasing it gives NO increases in performance/stability... in fact, there's a chance of damaging the card and/or motherboard...

If you want it in analogy form:

You have
3 cars going 55MPH on a 4 lane highway
Will this be any different from
3 cars going 55MPH on a 6 lane highway?

NAY!

 

That effect seemed to work on the NF4 chip set... beyond that not a clue.

I can say for a fact, it improved my OC on the DFI SLI-DR 939 MB!

 

Quote:

Originally Posted by killa_concept You have 3 cars going 55MPH on a 4 lane highway Will this be any different from 3 cars going 55MPH on a 6 lane highway?

Actually, yes there is a difference. Because the rest of the people on the highway drive at a normal speed of 75mph, they will eventually have to overtake those three guys. Most people (at least where I live) who drive that slow on a highway don't even care about looking in their rear view mirror to see if anyone else wants to pass them anyway, so the rest of the people will have to cram themselves into the only lane left, creating a nice traffic jam. On a 6 lane highway the jam won't be as bad.

This applies to the PCIE bus as well. The correct analogy would be:
If three cars are going at 55MPH on a 3 lane highway, they will cause a bigger traffic jam behind them than if they were going at 65MPH.

The whole idea of increasing the PCIE bandwidth isnt because the video cards transfer 4GB of data each second EVERY second (standard speed), but because when the cards need a burst of data (stuff in the ram that didn't fit into texture memory), it will occur faster, creating less of a bottleneck to all the other data transfers that it has to do.

 

Holy Thread Revival Batman!

 

hey guys i have my pcie frequency at 117 mhz so now i wana know what should my plx aux voltage be??? cz i think the plx aux voltage setting is for pcie clock right??? also got plx core voltage and dont know what thats for. they both on auto right now but i had the pc crash during 4k 3dmark test, ran 20 + on regula strike ... but on 4k it crashed so i think it was due to the aux and core plx being auto. give me a voltage to set it too pls bcz i suspect auto is putting too much juice in it, as auto always does