[totalz]

I'm OCing my i7, and since then the graphic card (gtxc 275) is very unstable.

It is set to "auto" in bios before, and I just set it to 100 and will start testing again. But since I don't know what the "auto" means in real life, I cannot be sure that's the problem!

Any software will tell me the PCI-E frequency?

 

[simfreak47]

Never use Auto! Always set manually. And make sure it's always at 100 MHz. Could try using PCWizard at www.cpuid.com

 

[tiondus]

"Auto" means it will scale with CPU frequency, so when you overclock your CPU, the GPU frequency will increase and may kill your card.

 

[totalz]

Can't find PCI-E in PCWizard.

Video card still unstable after setting PCI-E to 100MHz...

 

[TEntel]

Are you sure that is why your card is unstable?

If so, try setting it to 105, or 110. Sometimes there is a "sweet spot".

 

[totalz]

Quote:

Originally Posted by TEntel Are you sure that is why your card is unstable? If so, try setting it to 105, or 110. Sometimes there is a "sweet spot".

Of course I'm not sure... But everyone is saying 100MHz. And how does one know "auto" in bios does not stay at 100Mhz?

 

[TEntel]

Here is a guess why it may be unstable: When OCing the i7, it is pulling too much power from the PSU and the GPU isn't getting enough juice.
You don't have an inherently crappy PSU, but you never know.

Does the problem go away when the i7 is at stock?

 

[Asus Mobile]

setfsb will tell you. I don't think you will use but too report? Yea it will do.

Your BIOS does not tell you? Whatever.

 

[TEntel]

Quote:

Originally Posted by Asus Mobile setfsb will tell you. I don't think you will use but too report? Yea it will do. Your BIOS does not tell you? Whatever.

His bios doesn't tell him what "auto" sets the frequency to.

 

[Asus Mobile]

Quote:

Originally Posted by TEntel His bios doesn't tell him what "auto" sets the frequency to.

I appreciate that I gave an alternative. My suspended disbelief is in no way, helped by your comment. Let me say again. I can't believe your BIOS does not give you Info.

If you feel the need to respond to this post also? Go for it? I mean I don't know?

 

[Dryadsoul]

Gigabyte motherboard utility called Easytune 6 will give you the PCI-E frequency under advance tab:

http://majorgeeks.com/EasyTune_6_d6118.html

 

[totalz]

Quote:

Originally Posted by TEntel Here is a guess why it may be unstable: When OCing the i7, it is pulling too much power from the PSU and the GPU isn't getting enough juice. You don't have an inherently crappy PSU, but you never know. Does the problem go away when the i7 is at stock?

Cosair TX-850, should be more than enough for just one gtx 275, cause I'm gonna run SLi later...

 

[totalz]

Quote:

Originally Posted by Dryadsoul Gigabyte motherboard utility called Easytune 6 will give you the PCI-E frequency under advance tab: http://majorgeeks.com/EasyTune_6_d6118.html

Thank you, should have installed EasyTune all along

 

[totalz]

Even I don't know the real reason at this stage, but I'm sure that the screen saver Aurora.scr causes instability of my gtx 275 and restart my PC!! And that happens after my i7 is OCed!!

 

[TEntel]

Quote:

Originally Posted by Asus Mobile I appreciate that I gave an alternative. My suspended disbelief is in no way, helped by your comment. Let me say again. I can't believe your BIOS does not give you Info. If you feel the need to respond to this post also? Go for it? I mean I don't know?

...I wasn't trying to offend?
I thought you were asking a question...

Quote:

Originally Posted by totalz Cosair TX-850, should be more than enough for just one gtx 275, cause I'm gonna run SLi later...

Tell me I'm not going crazy lol. Did it not previously state that you had an Antec power supply?

That Corsair is a beast.

 

[totalz]

Quote:

Originally Posted by TEntel ...I wasn't trying to offend? I thought you were asking a question... Tell me I'm not going crazy lol. Did it not previously state that you had an Antec power supply? That Corsair is a beast.

Antec was another rig...

Corsair HX is a beast, but not TX

 

[TEntel]

HX is modular PSUs

TX is non-modular

Is there any other difference?

 

[totalz]

Quote:

Originally Posted by TEntel HX is modular PSUs TX is non-modular Is there any other difference?

There are reviews on the web about PSUs, one review tested TX-850 and say the power above 770W isn't "clean"... I bought it because of the price.

 

[tagurtoast]

The hx 850 has a gold efficiency rate and can get to 90% efficient and currently is the best psu efficiency avaliable