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PCIe 1x?

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#1 fish0


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Posted 07 May 2012 - 10:03 PM

I am considering a graphics upgrade that involves putting a PCIe 16x graphics card in a PCIe 1x slot using an adapter. How much GPU performance will I lose by doing this? Will the graphics still be significantly better than if I used integrated graphics? Will the connection be a bottleneck if the card is fast enough?

Thanks in advance

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#2 kisk


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Posted 07 May 2012 - 10:25 PM

The bandwidth would basically be cut down to 1/16th of the 16x interface, but its definitely doable. Hard to say what kind of hit you'll get as far as performance without some benchmarks.

Here are a few charts showing some gaming stats (very old article btw, but still viable):

Here is the beginning of that article.. fun read :thumbup2:

I've read that video decoding should work well with this, but don't expect to get a lot of gaming power out of it using the 1x interface, as bandwidth provides a big roll in gaming. What exactly are you wanting to upgrade your video card for?

Edited by kisk, 07 May 2012 - 10:29 PM.

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#3 the_patriot11


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Posted 07 May 2012 - 10:44 PM

for anything other then perhaps some encoding and maybe blu-ray watching, it would definetly bottleneck-especially in gaming. Youd be better off just getting a video card that was built for the x1 interface natively, or upgrading the motherboard. Also make sure your power supply can handle the video card upgrade.



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#4 rotor123


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Posted 08 May 2012 - 03:26 PM


The 1X Video card I use gives me 4.7 Desktop Aero and 5.8 business and gaming in WEI on a Core I3. This what I used http://www.newegg.com/Product/Product.aspx?Item=N82E16814500233


1 x HDMI

1 x D-SUB

1 x DVI

NVIDIA Unified Architecture

NVIDIA PhysX Technology

NVIDIA CUDA Technology

NVIDIA PureVideo HD technology

HDMI xvYCC Color & DeepColor technologies

Dolby True HD & DTS-HD Master Audio bitstream support

The problem with using a 16x PCIe card is that it has to have clearance so the the card plugs in properly and that it does not hit anything on the motherboard. I had 16X cards but they wouldn't clear the motherboard.

Good Luck

Edited by rotor123, 08 May 2012 - 03:29 PM.

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