Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

My question is fairly simple. Can a x4 physical (mechanical component) fit in a x16 PCIe, which is at x4 mode?

share|improve this question
    
I have never seen x16 slot run at x4. Why is it doing that? What motherboard chipset is that? –  paradroid Jan 18 '11 at 13:55
    
newegg.ca/Product/…;-13-131-665--Product Take a look at the last black slot. –  Burnzy Jan 18 '11 at 14:30
    
I would guess it is for compatibility since a x16 pci-e component will never fit in a x4 physical slot, unless you are really really persuasive and have an hammer nearby –  Burnzy Jan 18 '11 at 14:48
1  
@burnzy the sabertooth has slightly larger heatsinks, which will be beneficial if overclocking. Otherwise they don't matter. The sabertooth has USB3 which might be useful over the next year or two. Otherwise I'd make my decision based on the slot layouts, and what slots will be free after you install all your cards. –  Dan Neely Jan 18 '11 at 21:20
1  
@paradroid they're not common (16/8/8) is more likely to be useful, but I'd rather have the option of inserting an x16 card later if I find a need to do so; 4x physical slots often preclude this, and have reduced mechanical support even when the card will physically fit. –  Dan Neely Jan 18 '11 at 21:22
show 6 more comments

1 Answer

up vote 9 down vote accepted

Yes. The x16 slot is physically bigger than the x4 card and has 4 PCIe lanes available, so the x4 card will fit, and run at full speed.

share|improve this answer
    
+1 right on, also works with X1 slots too. –  Kyle Jan 18 '11 at 14:00
    
Thank you boss! :) –  Burnzy Jan 18 '11 at 14:09
    
@Kyle isnt a x1 slot smaller than an x4? Im not sure I agree with your statement. –  Chris Jul 14 '12 at 2:23
    
@chris a I meant x1 card can fit in a 16x slot. Wording is a little weird there since I used the term slot instead of card. For clarification a 16x slot can take a 8x, 4x, and 1x card. –  Kyle Jul 15 '12 at 3:04
    
@Kyle ahh my mistake, I was assuming you were speaking in context of the original question. Cheers –  Chris Jul 15 '12 at 3:22
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.