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PCIe x1 Device on PCIe x16 slot?
Hello there. I have novice question about PCIe.
I am looking at Asus M3A32-MVP Deluxe AMD board. It has 4 PCIe x 16 slots + 2 PCI slots. No PCIe x1 slot. I have device that need PCIe x1 slot. (Which is TV tuner card) My question is that can I connect PCIe x1 device on PCIe x16 slot? Will it work??? Thank in advance. Matt |
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PCIe x1 Device on PCIe x16 slot?
MattK wrote:
Hello there. I have novice question about PCIe. I am looking at Asus M3A32-MVP Deluxe AMD board. It has 4 PCIe x 16 slots + 2 PCI slots. No PCIe x1 slot. I have device that need PCIe x1 slot. (Which is TV tuner card) My question is that can I connect PCIe x1 device on PCIe x16 slot? Will it work??? Thank in advance. Matt PCIe x 16 are for graphics cards only as far as I know. I checked the specs for that board and it says it has two PCIe 2.0 slots so your tuner card should work in one of those. It appears it does not have any of the older PCI slots at all. |
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PCIe x1 Device on PCIe x16 slot?
MattK wrote:
Hello there. I have novice question about PCIe. I am looking at Asus M3A32-MVP Deluxe AMD board. It has 4 PCIe x 16 slots + 2 PCI slots. No PCIe x1 slot. I have device that need PCIe x1 slot. (Which is TV tuner card) My question is that can I connect PCIe x1 device on PCIe x16 slot? Will it work??? Thank in advance. Matt Yes. There is a table here that illustrates some possibilities. http://www.redbooks.ibm.com/abstracts/tips0456.html PCI Express slot compatibility x1 slot x4 slot x8 slot x16 slot x1 card Supported Supported Supported Supported x4 card No Supported Supported Supported x8 card No No Supported Supported x16 card No No No Supported ******* Just because a x16 connector is present, doesn't always mean all the lanes are wired up. The manufacturer may choose to wire only x8 lanes or x4 lanes, and for high bandwidth applications, that can have an effect. It won't affect your ability to connect a x1 card. "Sub wired" connectors are quite a common feature on motherboards now. Boards based on P35, for example, may have two physical x16 connectors, but the wiring is x16 to one connector, and only x4 to the other connector. To detect such an issue, you count "capacitor pairs" near the connector, on the surface of the motherboard. You need a closeup picture of the motherboard, to do a "lane analysis" and determine whether sub wired slots are present. HTH, Paul |
#4
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PCIe x1 Device on PCIe x16 slot?
In message JT wrote:
MattK wrote: Hello there. I have novice question about PCIe. I am looking at Asus M3A32-MVP Deluxe AMD board. It has 4 PCIe x 16 slots + 2 PCI slots. No PCIe x1 slot. I have device that need PCIe x1 slot. (Which is TV tuner card) My question is that can I connect PCIe x1 device on PCIe x16 slot? Will it work??? Thank in advance. Matt PCIe x 16 are for graphics cards only as far as I know. I checked the specs for that board and it says it has two PCIe 2.0 slots so your tuner card should work in one of those. It appears it does not have any of the older PCI slots at all. The specs actually allow any PCIe card to be inserted in any slot, larger or smaller are both supported, although there will be obvious performance penalties if you toss in a x16 video card into an x1 slot. However, apparently some SLI motherboards don't handle this as well as you might hope, instead assuming that x16 slots would only ever be used for video. No electrical damage will be done, but your wallet might be disappointed if you end up without compatible hardware and no return policy, so purchase carefully. |
#5
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PCIe x1 Device on PCIe x16 slot?
"JT" wrote in message ... MattK wrote: Hello there. I have novice question about PCIe. I am looking at Asus M3A32-MVP Deluxe AMD board. It has 4 PCIe x 16 slots + 2 PCI slots. No PCIe x1 slot. I have device that need PCIe x1 slot. (Which is TV tuner card) My question is that can I connect PCIe x1 device on PCIe x16 slot? Will it work??? Thank in advance. Matt PCIe x 16 are for graphics cards only as far as I know. I checked the specs for that board and it says it has two PCIe 2.0 slots so your tuner card should work in one of those. It appears it does not have any of the older PCI slots at all. JT About 6 months ago I built a server with a ASUS P5N32-E SLi M/B. Two of the PCIe x 16 slots were occupied with interface cards (HP Bus Adapter 416096-B21, AMCC 9690SA-8I). The only graphics card was a simple PCI one. Eric -- Remove the dross to contact me directly |
#6
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PCIe x1 Device on PCIe x16 slot?
Hello Paul and all.
Thank you very much for your help. You guys are great!!!! "Paul" wrote in message ... MattK wrote: Hello there. I have novice question about PCIe. I am looking at Asus M3A32-MVP Deluxe AMD board. It has 4 PCIe x 16 slots + 2 PCI slots. No PCIe x1 slot. I have device that need PCIe x1 slot. (Which is TV tuner card) My question is that can I connect PCIe x1 device on PCIe x16 slot? Will it work??? Thank in advance. Matt Yes. There is a table here that illustrates some possibilities. http://www.redbooks.ibm.com/abstracts/tips0456.html PCI Express slot compatibility x1 slot x4 slot x8 slot x16 slot x1 card Supported Supported Supported Supported x4 card No Supported Supported Supported x8 card No No Supported Supported x16 card No No No Supported ******* Just because a x16 connector is present, doesn't always mean all the lanes are wired up. The manufacturer may choose to wire only x8 lanes or x4 lanes, and for high bandwidth applications, that can have an effect. It won't affect your ability to connect a x1 card. "Sub wired" connectors are quite a common feature on motherboards now. Boards based on P35, for example, may have two physical x16 connectors, but the wiring is x16 to one connector, and only x4 to the other connector. To detect such an issue, you count "capacitor pairs" near the connector, on the surface of the motherboard. You need a closeup picture of the motherboard, to do a "lane analysis" and determine whether sub wired slots are present. HTH, Paul |
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