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Old 12-15-2008, 06:59 PM   #1
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Default PCI E 2.0 Question

Just how much of a performance increase/hit will I get from these setups.

Setup A:
1 GTX 260 Core 216 running at x16.

Setup B:
2 GTX Core 216 running at x8 each.

I don't understand the whole speeds thing. I read the cards wouldn't use all of the bandwidth anyways. Can someone please explain it to me?
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Old 12-15-2008, 07:14 PM   #2
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Default Re: PCI E 2.0 Question

Are these running on a PCI Express 2.0 slot or 1.x?
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Old 12-15-2008, 07:35 PM   #3
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Default Re: PCI E 2.0 Question

Both are running on a 750i SLI motherboard with 2.0 slots.
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Old 12-15-2008, 07:37 PM   #4
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Default Re: PCI E 2.0 Question

The SLI setup at x8 will still be faster than the single card running at x16.

Here's a review of the EVGA nForce 750i SLI that shows the performance differences: EVGA nForce 750i SLI FTW Review
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Old 12-15-2008, 07:42 PM   #5
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Default Re: PCI E 2.0 Question

The GTX 260 has an automatic 2.0 PCI-E slot. I think you are talking about SLi? If you are then SLi is meant for games that have been coded for multi-gpu graphics. Most games can't take advantage of the performance anyway, I speak from experience with my dual SLi 7800gt's. One performed as good as 2 did.

For your specific question, the 8x * 8x versus the 16x, I personally can see no performance decrease or increase.
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Old 12-15-2008, 07:52 PM   #6
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Default Re: PCI E 2.0 Question

What about two slots running at x16 and two running at x8 in SLI?
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Old 12-15-2008, 07:55 PM   #7
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Default Re: PCI E 2.0 Question

Quote:
Originally Posted by Verbatim47 View Post
The GTX 260 has an automatic 2.0 PCI-E slot. I think you are talking about SLi? If you are then SLi is meant for games that have been coded for multi-gpu graphics. Most games can't take advantage of the performance anyway, I speak from experience with my dual SLi 7800gt's. One performed as good as 2 did.

For your specific question, the 8x * 8x versus the 16x, I personally can see no performance decrease or increase.

That was the 7XXX series!
The 7 series was the first series to have SLI abilities and they sucked! Now with the 8xxx, 9xxx, and 2xx series, SLI has huge performance jumps!

The drivers for the 7 series were shoddy at best as well.
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Old 12-15-2008, 07:55 PM   #8
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Default Re: PCI E 2.0 Question

The two running at x16 are slightly faster in some tests than two at x8. Surprisingly, 2 @ x8 come out on top most times .

Have a look from the review I posted: x16 SLI vs x8 SLI Performance
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Old 12-15-2008, 07:58 PM   #9
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Default Re: PCI E 2.0 Question

There isn't that big of a difference. So, I should just stick with this board and not worry about upgrading? I can easily take my Q6600 to 3.0Ghz, which is really all that I need. I guess I can start saving up for my 2nd Core 216.
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Old 12-15-2008, 08:01 PM   #10
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Default Re: PCI E 2.0 Question

Yes, your EVGA 750i SLI will be just fine performance wise.
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