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Does it matter which PCI_E port I use for my graphics card?

Last response: in Motherboards
January 27, 2010 11:21:09 PM

My Noctua D14 is taking up more space than expected, and I was wondering if it matters whether I use the PCIEX16_1 or PCIEX16_2 port on my Asus P7P55D Deluxe
January 27, 2010 11:52:43 PM

I think the darker blue slot is x16 and the light blue is x4. Check your manual, it should tell you as much.

Also, you should have both sticks of RAM in the same coloured slots (both black or both blue) to get dual channel performance.
January 28, 2010 12:09:09 AM

Thanks for the memory information, it was useful!

I've read my manual about the PCI_E slots, and it says I should use the PCI Express 16x_1 slot (shown as #1 in the picture below), but my heatsink is blocking that slot. I was wondering if it makes a difference if I choose to put it in the PCI Express 16x_2 slot (shown as #2 in the picture below). It should be the same thing, no? Do I need to change a setting in BIOS if that's the case?

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a b U Graphics card
January 28, 2010 5:14:01 PM

Are you certain that's the way the heatsink needs to be oriented? Even with the really big honking heatsinks, they usually make it so that there's one way to align it so it doesn't interfere with the PCIe slots. It's a fairly standard amount of space they have to work with. Almost all the pictures I see have it installed like this:

So I'd try aligning it horizontally if there's room. If there's not ... well, do you really need a heatsink that big? Really, unless there's some reason why your setup should have extra trouble dissipating heat, you'll do just fine with even a mid-level CPU cooler like these:
January 28, 2010 7:14:47 PM

Thanks for the help guys but I actually could fit the 5870. Of course it's a really tight fit and I don't know what consequences there will be, but for now it is what it is.
April 9, 2011 2:01:23 PM

And if for some other reason I would like to change the slot ... would it work, or would it not work at all? :sarcastic: