I'm about to purchase a gtx 1070 ROG strix oc edition. I have a first gen i7 920 at stock speed. 1080p 144 hz gsync monitor. Am I stupid for buying the gtx 1070 with a old i7 920. It was great while it lasted but I don't know how much it would bottleneck the 1070. Would gync make a difference? Would an overclock make any difference? I do plan on getting a new mobo and i7 6700 or 6700k but that's a few months ahead can't afford everything at once. Thanks in advance