So I'm currently on the fence of getting an upgrade to my aging GTX 970, which has served me many years of great 1080p gaming. Games nowadays are getting more demanding (especially for VRAM), and I'm looking into upgrading. I'll definitely be waiting for NV's 11-series, but I had a question about power efficiency of large VS small GPUs. The question is this: Is it more power efficient to run a much larger GPU (x80/x80 Ti-class) at low utilization VS a smaller GPU that runs mostly fully utilized? Like, say, getting a x80Ti that runs at only 20-30% utilization vs an x70 that runs at 80-90%? Note: This doesn't talk about performance headroom, I know I'd love to have headroom, but that's out of topic. This may be a silly question, but I don't have concrete figures for it, so I thought I'd ask.