To directly answer your question, yes, the VS650 has 2x 6+2 pin connectors. However, I wouldn't use a budget/entry-level poor-quality PSU (i.e., VS Series) on a high-end rig (GTX 1080 Ti). Quality, efficiency, build, and reliability is questionable in that PSU. Note that the VS650 is already discontinued (due to poor quality).
For safety, I would recommend you to pair that high-end GPU with a high-quality PSU. Look at Seasonic G Series, Corsair RMx Series, and EVGA SuperNOVA G2/G3 Series.