Dell optiplex 780 mt

There's not much you can do with these as far as gaming goes - the power supplies are not going to handle demanding video card, and the chassis and mainboard are both proprietary.  

It'll perform just about the way you expect a nearly decade-old system to perform -- if you want the best you can do within the limits of a decade-old processor, replace the hard drive with a solid state drive.

I have had problems with the V2515H monitor since I bought it. It was replaced once and I had  calls where several  techs support took over the computer and moniter and tried different things to fix it. We even bought and replaced cords. The problem is the monitor shuts off 2-3 times per day. I have to turn it back on at which time, all the icons on this moniter gets shoved onto the 2nd monitor. After several calls and attempts to fix it, I could no longer give up the many hours the techs have used to tried to fix it as it interfered with my business. It is my business computer.  I decided to deal with the daily shut downs but its driving me crazy. I am about to go somewhere else to purchase a new moniter. I bought moniters and computers from Dell during this time and was going to purchase more but this issue with this monitor is driving me crazy and I have to remember the other moniters and the computers work very well.  I don't want to give this monitor any more time and effort as I lose in productivity and billable hours when the techs spent countless hours on it. I hope Dell with replace it with something similar in quality to this one.

Anyone else have problems with this moniter?

Best gaming upgrade for this system is Ram and a GTX 1050TI mini.

https://www.amazon.com/ZOTAC-GeForce-DisplayPort-128-bit-ZT-P10510A-10L/dp/B01MCU1ERO

Power supply can be an EVGA 700B1 or 750B1

does anybody know any mods that i can do to this system?