You can use your cpu by itself for gaming with 16 bit games. To be ohnest your cpu is made to deliver more power for the games that are current. If your dream is to back in time , than try to install windows xp on this system and go to the old days. Still I suggest to install windows 10 and get a new gpu to be able to maintain the rig for future. Keep that in mind that this cpu will be enough to play on (with new gpu of course
) for the next 5 years. It will bottleneck the gtx 1070 for sure , but still it will do the job