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TX850W pci 6 pin don't boot the 8800 GT


psychok9

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I've an strange problem: I've added an 8800 GT standard for try Physx engine, together to my Radeon 5850, with PCI-E 6 pin cable and the nVidia card seem don't start, the gpu fan don't move and the system don't see my card.

If I try an 5 pin molex adapter to the card, It start flawlessy and works.

I've tried to switch with another 6 pin PCI-E cable, without result.

 

What kind of problem can have my Corsair TX850W?

Thank you.

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With software mod you can :)

The cards works together and alone.

Today i've tried again with some other 2 PCI-E 6 pin cables, and 8800 GT don't booted. After I switched 1 (of 2) PCI-6 cable from Radeon 5850 to 8800 GT, and picked 1 random PCI-E 6 pin from the power supply to Radeon 5850.

The Radeon 5850 don't booted.

I've switched with other PCI-E 6 pin... ...and booted! With a little strange "bass & rough" noise fan (maybe from the power supply), lowered bit a bit after I've logged to Windows.

 

Someone can explain me this behaviour? Where I bought the power supply, they told me it could be the order of the cables... ??? The manual does not say anything about this.

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There is only a single 12v rail on the TX850 so it should not matter which PCIE cables you are using to power the graphics cards. If it looks like there is a good chance that replacing the PSU could resolve the problems, then we can definitely give that a try, Request an RMA.

 

However I am not familiar with mixing ATI and Nvidia graphics cards together like this so I would see if you can rule out any problems coming from that first.

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  • 1 year later...
There is only a single 12v rail on the TX850 so it should not matter which PCIE cables you are using to power the graphics cards. If it looks like there is a good chance that replacing the PSU could resolve the problems, then we can definitely give that a try, Request an RMA.

 

However I am not familiar with mixing ATI and Nvidia graphics cards together like this so I would see if you can rule out any problems coming from that first.

 

I've miss your post 2 years ago!

Some weeks ago I've bought new mainboard, cpu and ram and I've found the same problem with 1 video card inserted (the same main Radeon 5850).

Switched 2 PCI-E 6 pin cables with others 2 PCI-E 6pin cables, the computer starts correctly.

Can I still get the RMA? Corsair TX850 have 5 Years of warranty?

 

Thank you a lot!

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  • 1 year later...

I'm about to order a new Corsair power supply, so I can ship this flawed and use my computer (I eventually discovered that the PCI-E defective cables, going for exclusion, are 2 out of 6).

 

I know it's been a long time, but unfortunately for personal reasons I could not send it. Do you think I can still do it?

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