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I want to know PCI express slots are different from PCI

Discussion in 'Hardware Q&A' started by nawaz123, Mar 6, 2006.

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  1. nawaz123

    nawaz123 New Member

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    I would like to know what is the difference in PCI express slots compare pci slots. Do not confuse with graphics pci express slots. Forget about PCI express slots for graphics. I know about that one. I Just want to know PCI express slots are small or they look same??. Becos if I upgrade my motherbaord with pci express slots. Can I connect my mercury tvtunercard which is having pci slot??
     
  2. hitman_never_dies

    hitman_never_dies New Member

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    hmm.....

    there is a huge difference between pci n pci e slots.its like comparing ambassdor to mercedes.they look like same in colour.
     
  3. abhishek_sharma

    abhishek_sharma New Member

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    yes pci express slots can be used to add ordinary pci cards...i.e. theyre backward compatible
     
  4. drvarunmehta

    drvarunmehta New Member

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    Not at all. Forget being compatible, the card won't even fit into the slot.
     
  5. priyadarshi

    priyadarshi Guest

    i've to buy a new motherboard for my P4 i'd also like to know about the differences and also which motherboard have the PCI express slots in them. Gigabyte's 915 or Intel's original 915? But here abhishek_sharma says theyre backward compatible whereas drvarunmehta says that the card won't even fit into the slot. Its totally confusing.
     
  6. KHUBBU

    KHUBBU New Member

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  7. drvarunmehta

    drvarunmehta New Member

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    [​IMG]

    You can see 5 slots in this photo.

    1 & 3 are PCI Express x1
    2 & 4 are PCI Express x16
    5 is PCI

    As you can see, the dimensions of all are greatly different. So how would a card meant for one slot, fit into another?
     
  8. thadhanihemant

    thadhanihemant New Member

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    ya exactly as drvarunmehta
    said
    the card won't even fit into the slot

    i think it is clear as the above picture mentions.............
     
  9. priyadarshi

    priyadarshi Guest

    thank you all friends. your replies helped a lot. KHUBBU's link and drvarunmehta's picture made the scene clear. now i'd like to know about your suggestion on the best Intel's 915 (Chipset & Original) mobo having both PCI express slots and PCI normal slots in them of course with an option of AGP slot for my P4.
     
  10. ::vicky::

    ::vicky:: New Member

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    what is "X" in this
     
  11. abhishek_sharma

    abhishek_sharma New Member

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    sorry guys i confused pcie with pci-x...

    btw @ ::vicky::

    A connection between a PCIe device and the system is known as a "link" and this link is built around a dedicated, bi-directional, serial (1-bit), point-to-point connection known as a "lane". A lane is capable of simultaneously transferring 250 MB/s of data in each direction. A link can use more than one lane at a time but all links compliant with the PCIe specification must minimally support single-lane connections, referred to as "x1" (pronounced "by-one") links.

    For higher potential bandwidth, PCIe devices and systems can optionally support links using multiple simultaneous lanes – for example, a "x16" link uses 16 lanes. To support extra lanes, a PCIe card and slot must be designed to accommodate the extra electrical lines required (2 lines per lane). Card and slot types exist for x1, x4, x8, and x16 links

    however, these are down plugging compatible...i.e. if u can add a x8 card to a x16 slot but a x16 card will not fit into a x1,x4,x8 slot...
    that is actually clear frm the images posted earlier.
     
  12. OP
    OP
    nawaz123

    nawaz123 New Member

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    At last u cleared my doubt..

    PICTURE SPEAK THOUSAND WORDS THAN anything..
     
  13. ::vicky::

    ::vicky:: New Member

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    thanks abishek
     
  14. dharmeshhtailor

    dharmeshhtailor New Member

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    hey mate PCI Express slots are not backward compatible.............
    bcoz the voltage ratings of both are different.................
    i have got it confirmed from Nvidia authorised service center...............
    so mate please first do search about wat u r saying.............
     
  15. rockthegod

    rockthegod Dark Overlord !!!

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    Hi drvarunmehta, what motherboard is that ? (frm which the pic is taken).. looks like an SLI mobo....
     
  16. drvarunmehta

    drvarunmehta New Member

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    Yes its an SLI mobo. Since it's yellow coloured I guess it's DFI.
     
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