Question Is it possible to do crossfire with GPUs from different manufacturers and different vrams but the same model?

[vixeko_]

I've been trying to do crossfire for a few days with two graphics that I have just to experiment
They are the same model, an R7 250
but they are different model and vram
GPU 1: XFX Radeon R7 250 Low Profile 1GB VRAM GDDR5
GPU 2: DELL Radeon R7 250 2GB VRAM GDDR3
When I have both GPUs connected, Windows does not detect the second one.
I tried to change their position since I know that both GPUs work but nothing works
and in the bios of my motherboard (an asus m5a99x evo r2.0) I can't find the option to see the gpu configuration
then I want to make sure that it does not detect the second gpu because they are not compatible in crossfire or the second pcie port on my board is failing

 

[Fanatical Meat]

To my understanding no or if you can it’s problematic
Don’t bother with crossfire or SLI, they both are effectively dead. Games don support them properly and windows 10 and beyond doesn’t support it, dx12 doesn’t support it plus it adds unneeded complexity

 

[Leeea]

test just the 2nd port in your board with the first empty to verify its function.

crossfire is quite the retro thing these days, but for certain titles from the era it was quite the thing even today.

 

[MrTeal]

Even if you could limit the Dell 250 to 1GB, it probably still wouldn't work since the Dell DD3 (not GDDR3) card is going to be considerably slower than the GDDR5 one. Even if you could make it work you'd probably be better off using just the XFX card solo.