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Would Radeon HD 6850 work with PCI-E 1.0 X16?

Last response: in Graphics & Displays
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March 26, 2012 10:53:00 AM

Hi Team,

I am looking to use the GPU for Starcraft 2 and Diablo 3.

My computer specs is:
-Intel Dual Core E5200 O.C. @ 4.0GHZ.
-ABIT IP35 Motherboard
-4GB DDr2 Crucial Ballistix Ram
-Antec 430W Earthwatts

And I am wondering if I can purchase a Radeon HD 6850 to use with my motherboard which only supports PCI-E 1.0 X16?

Would this severely limit the GPU? Would anything else be a bottleneck as well, say like the CPU? Or would they only be tiny drawbacks?

If there are some drawbacks would purchasing a faster GPU overcome this?

Thank you for your time.
a b U Graphics card
March 26, 2012 12:56:49 PM

You'll be fine. I've got a 6950 running in a PCI-e 1.0 board. That PSU is a bit wimpy I think, but it's a good brand and will probably be fine. You're just going to have to be careful about adding new hardware, since you'll be close to the limit of what that PSU can do.
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March 26, 2012 1:07:40 PM

willard said:
You'll be fine. I've got a 6950 running in a PCI-e 1.0 board. That PSU is a bit wimpy I think, but it's a good brand and will probably be fine. You're just going to have to be careful about adding new hardware, since you'll be close to the limit of what that PSU can do.


To confirm, there is no drop in frame rates due to my board being a pci-e 1.0? The cpu wont be affecting it either? Or is it small differences of 1fps - 2 fps?
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a b U Graphics card
March 26, 2012 1:16:56 PM

There will be literally no difference. The only difference in PCI-e generations is available bandwidth. A 6850 does not use enough bandwidth to need PCI-e 2.0. The 6950 is very close, but it's still got enough room on 1.0.

It's like putting a card in an x8 lane. Only matters for the highest end cards.
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March 26, 2012 1:41:52 PM

willard said:
There will be literally no difference. The only difference in PCI-e generations is available bandwidth. A 6850 does not use enough bandwidth to need PCI-e 2.0. The 6950 is very close, but it's still got enough room on 1.0.

It's like putting a card in an x8 lane. Only matters for the highest end cards.


thank you very much!
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March 26, 2012 1:42:01 PM

Best answer selected by zealousalien.
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July 12, 2012 7:54:46 PM

Willard: Do you think HD 6950 Will run fine on any mother that has pcie 1.0 slot? I have asrock g965 and I wish adding that card on it but don't know in it will work. Many thanks
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April 6, 2014 7:04:33 AM

chajuis said:
Willard: Do you think HD 6950 Will run fine on any mother that has pcie 1.0 slot? I have asrock g965 and I wish adding that card on it but don't know in it will work. Many thanks


Yes, as long as you have a pci-e x16 slot. You may see small performance dips (1 or 2 fps), but nothing substantial. Just make sure you have a beefy enough psu.
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