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PCI-E 2.0 Video card in PCI-E 1.0 Slot?

Last response: in Graphics & Displays
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December 19, 2009 4:15:05 AM

Will a PCI-E 2.0 Video Card run in a PCI-E 1.0 slot?

If so, what would be the drawback of such an arrangement?
December 19, 2009 4:34:24 AM

Upon further review, I noticed the card says it supports "PCI Express® 2.0 / 1.1 Support".

My mobo is just PCI Express 1.0, so does that mean I'm out of luck?
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a c 255 U Graphics card
December 19, 2009 4:35:44 AM

Yes it will run fine. Only the highest end video cards even come close to needing PCI Express 2.0. It was developed to be futureproof.
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a c 255 U Graphics card
December 19, 2009 4:39:48 AM

Everything should be backwards compatable but if you will post a link to your motherboard and the card we can be more sure.
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a c 255 U Graphics card
December 19, 2009 6:34:08 AM

It should work....all PCI Express is supposed to be backwards compatible. There were some early issues though if I remember right. If it does not work you can always RMA it.

I am pretty sure you could go with an ATI HD 4650 or HD 4670 with that power supply. Either would be faster than the 9500GT and should be close in price. Also look for DDR3 if you can find it since it is faster. These lower end cards can not make use of 1gb of memory either...just not enough processing power. They put 1gb on them as a marketing gimmick so 512mb would be fine.

Here is what I would get its even $10 cheaper http://www.ncix.com/products/index.php?sku=44972&vpn=AX...

Check out the hierarchy chart http://www.tomshardware.com/reviews/geforce-310-5970,24...
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a b U Graphics card
December 19, 2009 6:49:11 AM

It will work for Sure.

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a c 147 U Graphics card
December 19, 2009 6:51:57 AM

An HD5870 (the current fastest single-GPU card) does not max out a PCIe 2.0 x8 slot. This slot is identical to a PCIe 1.0 x16 slot. They did a test by modifying a x16 PCIe 2.0 slot to run in x8 mode and the benchmarks were identical so it didn't need the extra bandwidth.

It appears that the HD5870 is likely close to maxing out these slots but anyone with such cards would have a x16 slot.
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a b U Graphics card
December 19, 2009 1:01:33 PM

There were a few issues with some of the first PCIe 2.0 graphic cards working correctly with the original PCIe 1.0 slots. These slots were quickly revised to 1.0a version slots though, and the graphic cards that had problems were also quickly revised.
In short, you would have to have one of the very first PCIe 1.0 motherboards ever made, and one of the very first PCIe 2.0 graphic cards ever made to even set up the circumstances that even maybe, might cause a problem.
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December 19, 2009 6:32:11 PM

Thanks for all the information guys, appreciate it.

I think I'm going to go with anort3's suggestion for a card.
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a c 255 U Graphics card
December 19, 2009 10:17:34 PM

templetonpeck said:
Thanks for all the information guys, appreciate it.

I think I'm going to go with anort3's suggestion for a card.



Glad to help. That 4670 should be a pretty good card. Good deal too especially being cheaper than the 5 generations older 9500GT.
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