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How do third-party AIB manufacturers put additional ports on a card?

post #1 of 4
Thread Starter 
Say if Sapphire adds a dual-link DVI port to an RX 480, is it adding an active converter or some third-party hardware in order to achieve this, or is it natively possible to add any configuration of ports to an AIB?
post #2 of 4
It depends on the particular card in question.

In the case of adding a DVI port to a RX480, the original design of the 480 already has the circuitry in place for a DVI connector, and the connector itself is simply missing. You can actually see the solder pads where the connector would be attached on the PCB. This type of scenario is typical, where Nvidia/AMD will build in the potential for many more ports than are actually used on the reference cards.

That said, there are cases where AIB manufacturers go well beyond what was ever intended, and in those cases they often do need to create their own circuitry for their custom cards.


Edited by Zero4549 - 9/16/16 at 1:35pm
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by Zero4549 View Post

It depends on the particular card in question.

In the case of adding a DVI port to a RX480, the original design of the 480 already has the circuitry in place for a DVI connector, and the connector itself is simply missing. You can actually see the solder pads where the connector would be attached on the PCB. This type of scenario is typical, where Nvidia/AMD will build in the potential for many more ports than are actually used on the reference cards.

That said, there are cases where AIB manufacturers go well beyond what was ever intended, and in those cases they often do need to create their own circuitry for their custom cards.


Thanks. What about those situations in which the original design doesn't include the appropriate circuitry, and what about completely custom AIBs? What I want to know is whether there is such a thing as a natively supported configuration of ports for a GPU, or whether it's always down to the design of the AIB.

To give an idea of what I'm thinking about, modern Intel chips and mobos don't have native PCI capabilities, so third-party Realtek or TI or whatever chips are required to convert PCIe to PCI. This introduces latency and other issues because it's non-native.
Edited by dukeReinhardt - 9/18/16 at 4:44pm
post #4 of 4
Quote:
Originally Posted by dukeReinhardt View Post

Thanks. What about those situations in which the original design doesn't include the appropriate circuitry, and what about completely custom AIBs? What I want to know is whether there is such a thing as a natively supported configuration of ports for a GPU, or whether it's always down to the design of the AIB.

To give an idea of what I'm thinking about, modern Intel chips and mobos don't have native PCI capabilities, so third-party Realtek or TI or whatever chips are required to convert PCIe to PCI. This introduces latency and other issues because it's non-native.

in the case of the rx 480 it does indeed natively support dvi. amd shipped full support for it. they simply left out the physical port on their reference cards because they didn't want to pay the additional fees since dvi is not an open standard. amd left it up to aib to add the physical dvi port to their cards if they wished to pay the fees.

for instances where the card doesn't natively support a certain port i'm not entirely sure if aib's could actually add support for it. the card would have support it on a bios and driver level.
Edited by orlfman - 9/18/16 at 10:51pm
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