I would like to know if you have the same behavior when installing the old video card. Could you please let me know?
I think this behavior could be related to a firmware version. Intel motherboards have a revision number, when we make an update or a change on a specific model, the revision number is going to change. (see the last 3 digits on the AA#)
It could be that these video cards are from a newer batch; therefore they are not compatible with motherboard.
Hi! No, I'm not getting the error with my old graphics card.
Also, note that this graphics card model (the 2GB one) has only 1 BIOS/firmware version, according to Video Bios Collection | techPowerUp
Anyways, if it happens to be because of the firmware/BIOS, what can I do? I won't throw a 2 years old top-class (300€!) motherboard.
I think that my problem is related to this one: INTEL DX79TO & DX79SI - GEFORCE GTX 670 INCOMPATIBILITY - ERROR 51, ALSO 1600 MEMORY UNDERCLOCKS AT 1066
and this one Intel DX79SI issues 780/Titan
What is that GOP thing? And why Intel hasn't fixed it?
It could be related to those issues; however the old video card is still working on your system. So I really think this is more relate to a new batch with newer features and fixes.
Question? Are you trying to use 2 video cards on the motherboard? Because if this is correct, it could be a lack of power situation.
My idea is to use both, yes, but for now I'm trying the new one in "single-mode", aka, removing the old one before inserting the new one.
A new batch with newer features and fixes... well... it's the same hardware, so, unless it's something in the firmware/BIOS of the card, I can't think about anything else.
Anyways, this is a standard PCI card, and as it works with other motherboards, I can't really understand why it won't work with mine.