Advanced search

Message boards : Graphics cards (GPUs) : Different generation GPUs incompatible

Post to thread Subscribe Sort
Author Message
PappaLitto
Send message
Joined: 21 Mar 16
Posts: 511
Credit: 4,672,242,755
RAC: 0
Level
Arg
Scientific publications
watwatwatwatwatwatwatwat
Message 51331 - Posted: 15 Jan 2019 | 23:45:58 UTC
Last modified: 15 Jan 2019 | 23:46:11 UTC

I just tried to put a gtx 970 in a system with a 1070 and the system refused to show me even the BIOS. I have read online that Nvidia restricts newer gen cards from running in the same system as one another. Is this true?

To test this theory I tried installing a 1060 in the system with the 1070 and everything worked fine. Can anyone else confirm or disprove this?

ID: 51331 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
Zalster
Avatar
Send message
Joined: 26 Feb 14
Posts: 211
Credit: 4,496,324,562
RAC: 0
Level
Arg
Scientific publications
watwatwatwatwatwatwatwat
Message 51332 - Posted: 15 Jan 2019 | 23:50:19 UTC - in response to Message 51331.

Shouldn't. I've run 980Ti with 2 1080Tis and didn't have a problem.

ID: 51332 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
skessu
Send message
Joined: 2 Dec 17
Posts: 1
Credit: 288,523,100
RAC: 0
Level
Asn
Scientific publications
watwatwatwat
Message 51334 - Posted: 16 Jan 2019 | 0:57:59 UTC - in response to Message 51331.

I had gtx960 and gtx1070 working fine together for a long time. If hardware problems are ruled out, I would suggest trying pre-RTX Nvidia drivers (anything under version number 400 I believe) and see if it works.

ID: 51334 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
Keith Myers
Send message
Joined: 13 Dec 17
Posts: 1341
Credit: 7,674,680,095
RAC: 13,260,905
Level
Tyr
Scientific publications
watwatwatwatwat
Message 51335 - Posted: 16 Jan 2019 | 4:32:14 UTC - in response to Message 51331.
Last modified: 16 Jan 2019 | 4:33:41 UTC

I ran a Wow contest machine this August with a 1060 and 970 with no issues.

Did you reinstall the drivers after adding the second card? That is needed for the drivers to pick up the additional card.

Do you have a bad PCIe slot? Try the cards in different slots. Swap them around.

ID: 51335 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
mmonnin
Send message
Joined: 2 Jul 16
Posts: 337
Credit: 7,635,065,645
RAC: 10,764,900
Level
Tyr
Scientific publications
watwatwatwatwat
Message 51336 - Posted: 16 Jan 2019 | 12:43:23 UTC

I've mixed Pascal and Maxwell and plenty of others have as well. Video out at BIOS may only come from one card/iGPU though.

ID: 51336 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
PappaLitto
Send message
Joined: 21 Mar 16
Posts: 511
Credit: 4,672,242,755
RAC: 0
Level
Arg
Scientific publications
watwatwatwatwatwatwatwat
Message 51337 - Posted: 17 Jan 2019 | 0:49:47 UTC

So far I've tried every card swap combination possible and I can't get it to show anything on screen. It only works with the 1060 and 1070. I am on a pre 400 series driver too.

ID: 51337 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
Profile Beyond
Avatar
Send message
Joined: 23 Nov 08
Posts: 1112
Credit: 6,162,416,256
RAC: 0
Level
Tyr
Scientific publications
watwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwat
Message 51348 - Posted: 17 Jan 2019 | 19:14:14 UTC - in response to Message 51337.

So far I've tried every card swap combination possible and I can't get it to show anything on screen. It only works with the 1060 and 1070. I am on a pre 400 series driver too.

If you can't even get to the BIOS screens. You've probably tried most of this but...

1) Flash the latest MB BIOS.
2) Try the monitor output from every connection on both GPUs. The live output often changes when you add cards.
3) Try the same setup in different computers. Try the GPUs in different PCIe slots.
4) Make sure that you have an adequate power supply to drive 2 power hungry GPUs.
5) Make sure that the GPUs are firmly clicked down into the slots.

If you still can't get to the BIOS when the 970 card is inserted, then there's probably a problem with the GPU. I see that you can use it singly in a system. See if there's a new GPU BIOS and if so flash it. Call the GPU manufacturer for their advice. If you still can't get it to work with other cards, you may be stuck using it in a system by itself. You could also sell it with the disclaimer that it must be used as the only GPU in a system. Best of luck. Let us know how it goes.

ID: 51348 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
Profile robertmiles
Send message
Joined: 16 Apr 09
Posts: 503
Credit: 755,434,080
RAC: 186,180
Level
Glu
Scientific publications
watwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwat
Message 51510 - Posted: 17 Feb 2019 | 5:45:37 UTC
Last modified: 17 Feb 2019 | 5:47:02 UTC

Some of the more recent graphics cards are designed to allow running them if the motherboard uses a UEFI, but not if it uses a BIOS instead. Also, some have a switch to tell them whether to allow running with a UEFI or with a BIOS instead.

Not all graphics card companies make the same choices of which to make available, so finding that a particular model of GTX 970 has one of these choices does not mean that every model of GTX 970 has the same choice.

A BIOS and a UEFI perform about the same function, but a UEFI allows graphics cards to provide their own piece of UEFI rather than relying on the one for the motherboard to know how to handle all possible choices of what graphics board to use.

You may need to check the specs for your graphics card and your motherboard to make sure that both are set to use a BIOS, or both are set to use a UEFI instead.

ID: 51510 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
Profile Beyond
Avatar
Send message
Joined: 23 Nov 08
Posts: 1112
Credit: 6,162,416,256
RAC: 0
Level
Tyr
Scientific publications
watwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwat
Message 51695 - Posted: 12 Apr 2019 | 19:25:40 UTC - in response to Message 51510.

Some of the more recent graphics cards are designed to allow running them if the motherboard uses a UEFI, but not if it uses a BIOS instead. Also, some have a switch to tell them whether to allow running with a UEFI or with a BIOS instead.

Not all graphics card companies make the same choices of which to make available, so finding that a particular model of GTX 970 has one of these choices does not mean that every model of GTX 970 has the same choice.

A BIOS and a UEFI perform about the same function, but a UEFI allows graphics cards to provide their own piece of UEFI rather than relying on the one for the motherboard to know how to handle all possible choices of what graphics board to use.

You may need to check the specs for your graphics card and your motherboard to make sure that both are set to use a BIOS, or both are set to use a UEFI instead.

I ran into this on some newer NVidia cards and an older Biostar MB. Luckily Biostar had a MB BIOS update, so check your MB support site.

ID: 51695 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
Post to thread

Message boards : Graphics cards (GPUs) : Different generation GPUs incompatible

//