Gtx1050

1050 requires the optional 365w power supply because its a 75W card and you only have 290W power supply.

If you do not want to upgrade power supply the ONLY one that you can use is GT1030.

For Non Dell video cards WILL HAVE to turn SECURE BOOT OFF.  When installing an after-market graphics card into a Windows PC with UEFI secure boot enabled, the system may not boot.  This is true for ANY PC not just Dell.

http://nvidia.custhelp.com/app/answers/detail/a_id/3156

Dell OEM full height but short PCI-E video cards work 

365w PSU =
7VK45 365w, Huntkey
T1M43 365w, Delta

DVP9W Nvidia GeForce GTX 1050 Ti,  4GB, 75w
36V90 Nvidia GeForce GTX 1060, 3GB, 120w
24K8H Nvidia GeForce GTX 1050,  2GB 75w
8CCF1 Nvidia GeForce GT 1030, 30w
1MPR3 AMD R9-360 2GB, 75w
24K8H Nvidia GTX 1050 2GB, 75w

7VK45 T1M43 365W

Regular EPS12v power supply can be used but requires adapter and modification of power supply mounting or housing the power supply OUTSIDE the case because the fan vents are upside down.  Its just easier to do this with a dell power supply.

https://www.youtube.com/watch?v=SCQTj1ei3Ew

The CAB359 from Moddiy has been tested and works fine with 3650 and 3670.  Optiplex 3020 9020, Precision T1700, Power Edge T20 also use the same thing. There is also a guy who made his own adapter from scratch.

https://raphtec.wordpress.com/projects/dell-poweredge-t20-atx-power-supply-adapter/

https://www.moddiy.com/products/Dell-Inspiron-3650-PSU-Main-Power-24%252dPin-to-8%252dPin-Adapter-Ca...