Hi Nagesh,

Yes, they both are different.

PES University, Bangalore was established as a Karnataka State Private University  by the Peoples Education Society Institute of Technology and it is located at is located at Outer Ring Road, Banashankari 3rd Stage, Banashankari, Bengaluru, in Karnataka.

While, PES University Electronic City Campus, Bangalore (Also known as: PESIT BANGALORE) is the first engineering college which comes under the PES group of institutions. It is located on Hosur Road. It is located about a kilometer away from Electronic city.

Refer here for more info abut PESIT Bangalore - https://www.careers360.com/colleges/pes-university-electronic-city-campus-bangalore

Refer here for more info abut PES University - https://www.careers360.com/university/pes-university-bangalore

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!