GPU motherboard specific

[beetlespin79]

just a quick question before i ask my main question! what could be a reason why a video card would be motherboard specific, only operate on certain motherboards! the cpu platform is not in the equation! thank you!

[Jurrunio]

that's a BIOS issue, 99% of victims are prebuilt desktops.

[Kodiak.]

WELL....

 

1. The size of the lane. A 16x card won't fit on a motherboard that only has an 4x. (This isn't an issue with mainstream modern cards, most if not all are 16x)

 

2. The chipset doesn't support the card or the CPU doesn't support enough PCI-E lanes. (Also, not an issue on most if not all modern motherboards and CPUs)

 

3. Some form factor motherboards such as mITX may not support some very large cards PHYSICALLY, this is also not very much an issue.

 

4. Firmware. BIOS can be a nag. Prebuilts with cards you can't find commercially are especially victims to this.

 

If you are planning to take an old card and put it on a new motherboard or vice versa, their is more issues to take into account.

[beetlespin79]

thank you VERY much for the feedback! if you dont mind, let me give a little more information! and YES, the GPU and mother are old! the motherboard is an asus a8n sli using amd cpu! now the gpu is or was new in box as if 3hrs ago!

 

it is a Asus dual 7800GT GPU! the issue i am having is only 1 GPU is being utilized, but both are being detected! this card is specific (doesnt say why) to only like 5 boards!

 

i have 3 other motherboards supporting SLI, 2 Asus boards and one EVGA board! one asus and the evga use ddr3 memory and the other asus board uses ddr4

 

so i have a wide variety of boards and this card will not utilize the second GPU on any board even running winxp, win 7 x32 and x64 or win 10 x64!

 

i dont care for the card, but a friend of mine is a collector and he is about to go ape $hit for me to sell it to him! 

 

i hope that info helps