should i use sketchup with integrated graphics or high performance nvidia processor?
You said it yourself.
Sir actually im facing a big problem. As soon as i open sketchup it automatically closes. In both the processors. Im using sketchup pro 2015 n i just bought a new laptop. Dell ci7 5558. @DanRathbun
Although you did not include the specifications of your new Dell machine, the thread in the linked url may offer some insight into your query.
It may be that your system has an integrated Intel HD display adapter and if so, you may find an acceptable workaround in that thread.
Yes try using the 32-bit edition, until the next version comes out. (Then try the 64-bit edition again.)