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lokeyh
Joined: 29 Sep 2004
Posts: 208
Helped: 51
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 30 Sep 2004 3:48 PCI Express |
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| What is PCI Express? What is the difference between PCI Express and PCI?
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papyaki
Joined: 13 Apr 2002
Posts: 564
Helped: 19
Location: A small village somewhere in Gaul
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| 30 Sep 2004 7:06 Re: PCI Express |
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Hi,
This topic was already discussed.
Look there : h**p://www.edaboard.com/viewtopic.php?t=88608&highlight=pci+express
* = t
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textik
Joined: 28 Mar 2001
Posts: 142
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| 30 Sep 2004 8:26 Re: PCI Express |
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Anyway you can find a good tutorial here:
hxxp://zone.ni.com/devzone/conceptd.nsf/webmain/70B1D3E338E6F52386256E37006DFDB3
Regards
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nagraj
Joined: 17 Feb 2004
Posts: 52
Helped: 1
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| 01 Dec 2004 16:23 Re: PCI Express |
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| Study the book present in the eda book download forum that will give u answer..also check intels site.If ur more interested.
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cesare
Joined: 21 Feb 2002
Posts: 177
Helped: 7
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| 02 Dec 2004 16:53 Re: PCI Express |
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| In few words PCI is a parallel bus while PCI express is a serial bus with multiple lanes.
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dumbfrog
Joined: 17 Jul 2004
Posts: 191
Helped: 4
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| 07 Dec 2004 1:02 Re: PCI Express |
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pci and pcix are singled ended, around 100Mbit
pci express is differential signaling, around 1.2G~2.5G
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arunragavan
Joined: 01 Jul 2004
Posts: 484
Helped: 21
Location: India
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| 07 Dec 2004 6:28 Re: PCI Express |
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PCI Express is a recent feature addition to many new motherboards. PCI Express support can have a big impact on your hardware choices both now and in the future.
PCI as we know it is an obsolete standard dating back to the early 90's and needs replaced. While we've spent plenty of time and energy improving the speed of processors, memory, and other parts of the PC we've gone virtually nothing with PCI. As such we are stuck with a technology that still runs at the speeds and bandwidth we were comfortable with in the 90's. PCI as we know it is holding us back - it is a bottle neck - a limitation to the maximum performance of our systems
Difference between PCI Express vs AGP vs PCI
Currently, the most common use for PCI Express is Video. On the graphic at right you can see the physical differences between the cards.
The connector on PCI Express video cards will always start out with a small piece not directly joined with the rest of the slot, and then a notched piece not directly joined with the rest of the slot. This notch goes into the 1x portion of the 16x slot. The characteristic notch makes it easy to tell the difference between PCI-E (PCI Express) and an AGP Video card. As you can imagine, a PCI Express Video card will not fit into an AGP card slot, and a AGP Video card will not fit into a 16x PCI Express card slot.
Another physical difference between PCI Express Cards, AGP, and PCI is the distance between the card's bracket and the start of the connector. On PCI Express cards, there is very little distance between the metal bracket and the start of the connector. On both PCI and AGP the distance is much longer.
Although not shown in the picture (due to current rarity), PCI Express 1x / 4x cards also have distinct differences.
Hope this helps you.
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arcaphill
Joined: 17 Dec 2003
Posts: 89
Helped: 1
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| 07 Jan 2005 9:35 PCI Express |
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| Visit www.pcisig.org
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