sli issues, PLEASE HELP :(

[crosis]

disclaimer: i have reposted this topic here as opposed to just in the troubleshooting section as someone thought it might get more responses.

 

ok, so i have a fun one....

 

i own 2 rigs. one for me and one for my gf. i recently upgraded my gpu and decided to put the old one in sli on my gf's rig, giving her 2 gtx 780's in sli. it is on an msi z87-gd65 gaming motherboard. finished installing and booted, but no sli option where it should be in the nvidia control panel.

 

i tested each card individually, they work. 

i swapped locations on the motherboard, still no sli option.

i read the manual to make sure they were in the correct pci slots, they were correctly in slots 2 and 5.

i switched them anyway, obviously no improvement there.

i popped out both cards and put them in MY rig- worked like a charm.

i attempted using ddu, to no avail.

i tried a completely fresh install of windows and all drivers- no luck.

nothing on the motherboard, gpu or bridge show any sign to suggest fault.

i am at the end of my rope on this one. can anybody help? pretty please? im begging.

 

[Mindtrick]

Did you clear CMOS?

[Timopomer]

i expected it doesnt support sli,but it seems to do from the product page...

 

i have no idea man..

[Timopomer]

 

disclaimer: i have reposted this topic here as opposed to just in the troubleshooting section as someone thought it might get more responses.

 

ok, so i have a fun one....

 

i own 2 rigs. one for me and one for my gf. i recently upgraded my gpu and decided to put the old one in sli on my gf's rig, giving her 2 gtx 780's in sli. it is on an msi z87-gd65 gaming motherboard. finished installing and booted, but no sli option where it should be in the nvidia control panel.

 

i tested each card individually, they work. 

i swapped locations on the motherboard, still no sli option.

i read the manual to make sure they were in the correct pci slots, they were correctly in slots 2 and 5.

i switched them anyway, obviously no improvement there.

i popped out both cards and put them in MY rig- worked like a charm.

i attempted using ddu, to no avail.

i tried a completely fresh install of windows and all drivers- no luck.

nothing on the motherboard, gpu or bridge show any sign to suggest fault.

i am at the end of my rope on this one. can anybody help? pretty please? im begging.

 

what cpu is she using and how many lanes does it have...it needs at least 2x 8xpcie3

[Ostwind]

If the cards work in another board and you've checked everything else then I would say the board is faulty.

[crosis]

singular cards work in either slot. tried cmos. the cpu is a 4670k.

[hogfather]

power supply perhaps? 

[crosis]

maybe. i assumed 750 would be enough.

[Critizin]

750 is plenty...    id assume the MOBO is faulty at this point.

[crosis]

i was beginning to think this as well but its odd as a single gpu will work in either slot. 

[hogfather]

maybe. i assumed 750 would be enough.

 

750W is plenty, but what brand/model is ur power supply?  if its a cheap one it might not give you enough 12v juice.  are you sure your cables (psu to gfx) are not faulty?  try the PSU from your PC.  it might be a bit of work but I would imagine it would be worthwhile.

[crosis]

750W is plenty, but what brand/model is ur power supply?  if its a cheap one it might not give you enough 12v juice.  are you sure your cables (psu to gfx) are not faulty?  try the PSU from your PC.  it might be a bit of work but I would imagine it would be worthwhile.

just tried each set of cables interchangeably on a single gpu. its not the cables.

[SkulD]

just tried each set of cables interchangeably on a single gpu. its not the cables.

Did you update bios?

It may fix your problem

[crosis]

Did you update bios?

It may fix your problem

bios is up to date

[incarnate]

yeah either the motherboard or possibly the sli bridge might be faulty. would you happen to have another bridge to try?