Hi, for you I'm comparing all three colleges one by one. The comparision will be on certain criteria's ;

Noida Institute of Technology(NIET);

• Established Year:                               2001
• Eligbility(12th):                                   45%
• Total Course Fees(4Years):              4.6(Lakh)
• Total B.Tech Courses Offered:          22
• Average salary:                                Rs 3.8(Lakh Per Annum)
• Highest salary:                                 Rs 11(Lakh Per Annum)

Inderaprastha Engineering College(IPEC), Ghaziabad;

• Established Year                                2000
• Eligibility:                                             45%
• Total Course Fees(4Years):              4.85(Lakh)
• Total B.Tech Courses Offered:         17
• Highest Placement package:           19(Lakh)

Greater Noida Institute of Technology;

• Established Year                                  2001
• Eligibility(12th)                                       50%
• Total Course Fees(4Years)                  4.45(Lakh)
• Total B.Tech Courses Offered            22
• Highest Placement Package                12.78(Lakh Per Annum)

So here I compared all the three colleges on some common criteria's. You can also compare various colleges on Careers360 College Comparision Tool(link mentioned below);

https://www.careers360.com/compare-colleges

Good Luck.