The 1660TI is essentially the same processor as last year's 1070 but offered at a much lower price point.
Actually, the 1070 came out nearly 3 years ago, so that level of performance should be expected at a lower price point by now. And I'm not sure that a 25% lower price than that card launched for back in 2016 can really be considered as that big of a price reduction, especially considering the new card also has less VRAM. The 1660 Ti seems like a fine enough card, and has some other improvements that could potentially give it an edge over the 1070 in future titles, but after 3 years it should have been priced around $250 at most, not $280.
I wanted to like the Vega cards, the Vega 56 was a solid offering and probably could have competed with the 1070 when it was new.
Yeah, Vega launched shortly after mining started really picking up, which more or less instantly priced those cards out of the gaming market for their first year of release. And by the time those inflated prices really started to subside, many people were already waiting for the next generation of cards on the horizon. While I don't think the 20-series was all that impressive in terms of pricing, the 2060 was enough of an improvement to put pressure on Vega. Unfortunately, much like the Radeon VII, Vega required expensive HBM2 memory, which made those cards impractical to sell in the sub-$300 price range. The Navi cards coming this summer shouldn't have that problem though, so I expect them to provide at least Vega-level performance for around $200-$250.
Hopefully we won't go through that kind of demand ever again with the Radeon VII, but that was a poor offering. The 2070, 2080, and 2080TI destory it on every level.
That's not quite accurate, as it generally performs roughly in between a 2070 and a 2080 in games, and at many compute tasks it will outperform a 2080. Unfortunately, it's priced about the same as a 2080, largely due to that 16GB of HBM2, and it doesn't really offer much over its competitor aside from the extra VRAM, which won't likely be utilized by games for years to come. The bundled games might make it a somewhat better deal for anyone planning on buying them, but I think the card would need to be priced $100 less to be a competitive option for most of those shopping for a card in this range. As it is, it's more a card for professional content creators who can utilize that extra VRAM than it is a gaming card.
When AMD launched the RX 480 in 2016, it was quite impressive compared to existing cards in terms of value for what had previously been considered relatively "high-end" levels of performance, which is likely why Nvidia had to price their 10 series competitively in the months that followed. The RX 480 offered average gaming performance above that of a GTX 970, but at a $200 price point, or $240 for a version of the card with double the VRAM. And the RX 500 series was a slightly improved refresh of those cards. For their next generation, AMD decided to wait for 7nm though, which is why Nvidia hasn't needed to be nearly as competitive with their 16 and 20-series cards so far. They're only competing with AMD's nearly 3 year old mid-range offerings, and some higher-end models that are too expensive to manufacture at competitive price points.
All indications so far are that Navi should once again bring competition to this space though, and it wouldn't surprise me if we end up seeing performance better than 1660 Ti for a considerably lower price, and probably performance better than a 2060 for under $300 as well. But again, the details of these cards are not yet known for certain, though hopefully we will learn more about them within a few weeks.