October 28, 201114 yr I have an Asus e35m1 pro. It has a PCie2.0 16x in 4x mode. Can I use a Pcie 8x here? Does the number of "x" mean anything in terms of physical pins attaching to the slot?
October 28, 201114 yr Yes, an 8x card will fit without problems in a 16x slot, the 'number x' means the amount of datalines the slot has, and the card can use. PCI-e cards will automaticly use the maximum amount of datalines they can, so as long as it physically fits, it should work, although some older motherboards only had PCI-e 16x video-slots that wouldn't accept other cards, that is a problem you probably won't have. Edit: Forgot to say, on that board, the 16x refers to the physical size of the slot, and the 4x is the amount of datalines that are actually connected to the processor. So no matter what is there, it won't use more than 4x, and if you put in a 1x PCI-e card it would of course use only 1 dataline.
October 28, 201114 yr the answer is usually Yes. there are a few rare cases where you cant. a good example is the asus P8P67 series 16x slots do not have 8x electrical for LSI PCIe 8x raid cards to work.
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