Forget OC for a moment, take two cards at default factory settings like GTX 560 Ti SOC and GTX570 (non OC model). You have almost same performance and less power usage with less heat and it cost less.
For people that dont OC, the GTX560 Ti SOC is better and cheaper.
Situation changes if we OC both cards and everyone knows that GTX570 will be the winner.
Better performance than a stock 560, sure, and that makes it a good value. But it's not always better than the 570. And if we're talking about the Guru3D benchmarks I have my doubts; I don't think they are using the same driver for the 570 and 560, since the 570 gets the same framerates in the 560 review as it does in their 6900 review, and they used 263.09 in that review.
Oh look, I think I was right. This TechReport review, with the Gigabyte 560-OC, is never showing it faster than the GTX 570, contrary to what the Guru3D review showed, and they are using the latest drivers:
http://techreport.com/articles.x/20293/1
Plus, as you can see, it actually has the Gigabyte card using more power. To get that speed you simply have to use more power; you're not going to get that performance for free since both GF110 and GF114 are refined for performance and power. Plus they use a better and more comparable method for power usage than Guru3D does.
Simply put, concerning Nvidia chips, if you want GTX 570 performance you are going to consume 570-like power. Overclocking a 560 is going to raise the power consumption, and the TechReport results show power consumption correlates to performance: The Gigabyte card uses about the same power and delivers about the same performance. Although technically, the 570 is offering better performance/watt in their review, but just by a hair. I'd basically call it even. As far as performance goes, the 560-OC does look good if you're only concerned about out of the box performance. But the 570 is simply faster. It has a lot more shader units, so overclocking them has a bigger impact than on chips with less units (and thus it doesn't need to reach such high speeds), it has more memory, and it will have more memory bandwidth.
Why should we forgetaboutit? The 570 does not OC like the 560 so I'd say very important to think about since it's not even close to 900Mhz OC.
http://www.techpowerup.com/reviews/P...atinum/31.html
http://www.techpowerup.com/reviews/A...TX_570/30.html
If 560's regularly gets 1000 it's a faster card both OCed for $100 cheaper.
Even if both not OCed the 570 is an awful value compared to 560/6850.
The 570 doesn't need to overclock the same in terms of GHz because it has more shader units (a lot more), more memory bandwidth, and more memory.
Besides he wasn't saying we need to forget about it. He was only saying that to try to illustrate a point (he was making a hypothetical situation), such that the point he was trying to make was to not consider home-brew overclocking but instead consider what you pay and what you get (guaranteed) out of the box.
And faster cards always command a premium, especially the ones at the very top like the 580 and 570. This is nothing new and we saw this with the GTX 285 and 275.