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PCI Express 2.1 x16 and PCI Express 2.0 x16


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#1 s1lents0ul

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Posted 08 July 2010 - 12:46 PM

If i was to be getting this mobo - GIGABYTE GA-X58A-UD3R LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard

The following are the specs for its Expansion Slots:

PCI Express 2.0 x16

2 x PCI Express x16 slots, running at x16 (PCIEX16_1/PCIEX16_2) (Note 1)
2 x PCI Express x16 slot, running at x8 (PCIEX8_1/PCIEX8_2) (Note 2)

(Note 1) For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16_1 slot; if you are installing two PCI Express graphics cards, it is recommended that you install them in the PCIEX16_1 and PCIEX16_2 slots.

(Note 2) The PCIEX8_1 and PCIEX8_2 slots share bandwidth with the PCIEX16_1 and PCIEX16_2 slots espectively. When PCIEX8_1 is populated with an expansion card, the PCIEX16_1 slot will operate at up to x8 mode; when PCIEX8_2 is populated with an expansion card, the PC IEX16_2 slot will operate at up to x8 mode.

does 2.0 or 2.1 matter? what does it mean and would i be able to run (2) 1gb cards or does the 2.0/1 mean that it takes two PCIEx16 slots for one card?

Please explain what exactly 2.0 and 2.1 is, and whether i can use (2) PCIE 2.0x16 video cards on this mobo
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#2 MrBruce1959

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Posted 08 July 2010 - 02:24 PM

Welcome to Bleepingcomputer.

The links below will give you an explanation.

http://en.wikipedia.org/wiki/PCI_Express

http://en.wikipedia.org/wiki/PCI_Express#H...rotocol_summary

http://en.wikipedia.org/wiki/PCI_Express#Architecture

Hope this information helps.

Kind regards.
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#3 s1lents0ul

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Posted 08 July 2010 - 06:36 PM

Thats nice of you but I was looking for a "in your own words" kinda response, and a solid yes or no answer to whether I can use 2 of them or not. But I learned that 2.0 doesn't mean it uses 2 slots so I'm thinking now that i can use 2 cards. Do I have the right idea or no?
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