GTX 1050 ti CUDA API version

Hi there, I’m trying to install CUDA 9.1 on ubuntu 16.04 and have been encountering some issues. It seems that cuddn and tensorRT fail to install due to some version mismatch. Running ./deviceQuery after installing CUDA gives me this.

Device 0: "GeForce GTX 1050 Ti"
  CUDA Driver Version / Runtime Version          9.1 / 9.1
  CUDA Capability Major/Minor version number:    2.1
  Total amount of global memory:                 4532 MBytes (4752408576 bytes)

I would assume that the CUDA Capability Major/Minor version number would be 6.1 and not 2.1. I got the card from an Ebay seller that ships cards from China. I was trying to inspect information about the generic manufacturer, but I got this:

lspci -knn | grep VGA -A1
04:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:1c82] (rev a1)
	Subsystem: NVIDIA Corporation Device [10de:089c]

Can I please get any information on whether this information should be correct for a GTX 1050 TI ?
All the best,

It should report 6.1 for compute capability.

1050 Ti typical deviceQuery output looks like this:

I’m not aware of any 1050Ti with greater than 4096 MBytes total global memory.

The PCI device ID and vendor ID appear to be correct:

but a shady vendor may be able to spoof those.