i want to know if i can use my gtx 960 2gb without 6 pin pci connector until i buy a new PSU bcs mind does not have the 6 pin, can i use it without it for now?
Pass on a link to the GPU and the make and model of your current PSU, as well as it's age. If your PSU lacks the necessary connectors, you're not supposed to be using it with the component that needs the extra connectors.
If your PSU doesn't have sufficient PCI-e cables, then it was not meant to power up GPUs which require a min 6-PIN as a connector. Simple as that. You cannot use the card without the 6-PIN cable. Upgrade the PSU.