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Video card compatibility
Hi,
I am going to build a computer based on a Gigabyte GA-EP35-DS3R mobo. The video card will be a Nvidia 9800 GTX. The mobo has a PCI-E x16 slot but the video card needs a PCI-E 2.0 x16 slot. What is the difference and will it work in the mobo? Thanks. Raymo... |
#2
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Video card compatibility
Raymo wrote:
Hi, I am going to build a computer based on a Gigabyte GA-EP35-DS3R mobo. The video card will be a Nvidia 9800 GTX. The mobo has a PCI-E x16 slot but the video card needs a PCI-E 2.0 x16 slot. What is the difference and will it work in the mobo? Thanks. Raymo... PCI Express version 2 is compatible with version 1. http://www.pcisig.com/specifications/pciexpress/base2/ To work properly, it is a matter of the hardware negotiating the rate they want to work at. For example on SATA drives, the drive and the controller have to agree on a rate. The same idea happens with PCI Express. There was one incident, where a PCI Express version 2 card (8800GT ?), would not work on some version 1 motherboards. The fix was to flash the firmware on the video card, so that the GPU would keep the interface in version 1 mode all the time. In response to that incident, ATI made the claim, that their cards "started in version 1 mode", so there was less risk of a problem. I presume they'd go into version 2 mode, if all was well. (Sounds a little fishy though... That is how marketing battles work.) Nvidia has had time to figure it all out, so I would not expect a problem now. You can always check around and see if it is mentioned though. Paul |
#3
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Video card compatibility
Many thanks for the info.
Raymo... "Paul" wrote in message ... Raymo wrote: Hi, I am going to build a computer based on a Gigabyte GA-EP35-DS3R mobo. The video card will be a Nvidia 9800 GTX. The mobo has a PCI-E x16 slot but the video card needs a PCI-E 2.0 x16 slot. What is the difference and will it work in the mobo? Thanks. Raymo... PCI Express version 2 is compatible with version 1. http://www.pcisig.com/specifications/pciexpress/base2/ To work properly, it is a matter of the hardware negotiating the rate they want to work at. For example on SATA drives, the drive and the controller have to agree on a rate. The same idea happens with PCI Express. There was one incident, where a PCI Express version 2 card (8800GT ?), would not work on some version 1 motherboards. The fix was to flash the firmware on the video card, so that the GPU would keep the interface in version 1 mode all the time. In response to that incident, ATI made the claim, that their cards "started in version 1 mode", so there was less risk of a problem. I presume they'd go into version 2 mode, if all was well. (Sounds a little fishy though... That is how marketing battles work.) Nvidia has had time to figure it all out, so I would not expect a problem now. You can always check around and see if it is mentioned though. Paul |
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