Can i install a Gtx 1050ti in Dell Inspiron 3668?

I don't think you're going to find one that will physically fit the system - no.

I'll fit it somehow. But is it compatible?

But i saw the Dell support and they have provided drivers for GTX 1030, GTX 1050, GTX 750ti and even. For Rx4xx series.

www.dell.com/.../drivers

Dell has not validated 3rd party cards as being compatible. With UEFI secure boot will have to be turned OFF and CSM with Legacy Option Roms will have to Be ON.

This is not supported by Dell and The 4 Gig 1050TI says 300W power supply minimum.

The 3668 has a proprietary 6 pin connector to the motherboard instead of 24 pin and its itty bitty teeny tiny 200W.

There is also an Issue with NVIDIA booting to black Screen Even with all these changes.

GeForce Hot Fix driver version 381.78 that addresses the following:
Fixes Windows 10 Creators Update booting to a black screen

Choose the appropriate driver according to your Windows 10 version:
Windows 10 64-bit:
http://international.download.nvidia.com/Windows/381.78/381.78-desktop-notebook-win10-64bit-international.hf.exe

Windows 10 32-bit:

http://international.download.nvidia.com/Windows/381.78/381.78-desktop-notebook-win10-32bit-international.hf.exe

www.dell.com/.../drivers

But here, in the Video drivers section, they have provided drivers for GTX 750 ti, 1050, 1030 and even RX 4xx series. Can i put a low profile 1050ti in this pc??