Best SFF GPU?

[Octoplex7]

My case limits me to a GPU which is a maximum of 31cm long and maximum 5cm thick.
I currently have an RTX 3080 10gb FE in there and a meaty PSU (5700x and 32GB Ram).
What are my options here?
I need it to be a significant upgrade in raster and VRAM.
Something like the Gigabyte RTX 4070 Ti Super is dual slot and only 261 mm long. It's only around a 28% increase in relative performance according to the techpowerup database though. I'd like something closer to 50% and might be open to AMD if I can get it to consistently run LLM's.
Any current-gen recommendations?

 

[WARburton]

there is a 4080s pro art but its defo longer than 310mm and i dont see any 4090's fitting.

the only AMD gpu i would buy over an 4070 ti super would be an XTX and i dont see any that would be a 50mm restriction unless you grabbed an FE but you would have to go used

EDIT
this would fit but just https://www.asus.com/uk/motherboards-components/graphics-cards/proart/proart-rtx4080s-o16g/techspec/

 

[Boomstick777]

There's going to be a lot more info on upcoming cards from CES tomorrow, worth seeing if any of those cards will fit your use case.

 

[Octoplex7]

there is a 4080s pro art but its defo longer than 310mm and i dont see any 4090's fitting.

the only AMD gpu i would buy over an 4070 ti super would be an XTX and i dont see any that would be a 50mm restriction unless you grabbed an FE but you would have to go used

EDIT
this would fit but just https://www.asus.com/uk/motherboards-components/graphics-cards/proart/proart-rtx4080s-o16g/techspec/

Thanks for the reply.

The ASUS card looks promising and I'll keep an eye out once the 5080's are announced as it might be worth picking up on a discount/used.

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[Octoplex7]

There's going to be a lot more info on upcoming cards from CES tomorrow, worth seeing if any of those cards will fit your use case.

Thanks for the reply. I'm definitely looking forward to those announcements. Most likely going to be the 5070ti that I'll be most interested in as it looks like being the cheapest NVIDIA card with 16GB's of VRAM and likely to not have overkill cooling (which should keep the size down on at least some of the models). I'll probably end up comparing it to the above ASUS and seeing which offers the best value.