If you are not getting the performance you want then it is time to upgrade.
If your limitation is graphics you can upgrade to a stronger graphics card.
It is recommended that such an upgrade be a big one, three tiers higher or you may be disappointed if you do not see big results. That would be a GTX970 class card. GTX1060 is even better.
A psu that can power a GTX760 can run a card as good as a GTX1070.
If you are not getting the performance you want then it is time to upgrade.
If your limitation is graphics you can upgrade to a stronger graphics card.
It is recommended that such an upgrade be a big one, three tiers higher or you may be disappointed if you do not see big results. That would be a GTX970 class card. GTX1060 is even better.
A psu that can power a GTX760 can run a card as good as a GTX1070.