1080p isn't really stressing these cards, 1440p performance is needed really
Hardly changes anything.
So an RTX2070 is double an RX480 at 1440p,and AMD rates an RX5700XT as 5% faster than an RTX2070. So slightly more than twice as quick as a $249 RX480 for a 1.8X increase in price.
The same difference as before for the RX470 against the RX5700(RTX2060 with 10% more performance),ie,2.2X performance for a 2.1X increase in price.
Its the same issue as Turing. GTX1070 started at $380. RTX2070 cards started at $499.The RTX2070 was 39% faster than a GTX1070,but the minimum RRP was 31% higher.
But the RRPs are not the street prices of these cards now. Now in the UK market a Vega56 is as low as £236. Decent aftermarket cards are £270.
If the AMD figures of RTX2060+10% are correct,then it makes the RX5700 only 22% faster than a reference Vega56,and between £124 to £144 more expensive,ie,52% to 61% more,and £90 to £110 more than an aftermarket Vega56.
You can get a Ryzen 5 2600 and a Vega56 for the same price as an RX5700.
Using the AMD figures of RTX2070+5% for a RX5700XT,it makes it 38% faster than a reference Vega56 for between £189 to £214 more which is 80% to 91% higher in price,and between £155 to £180 more for the aftermarket models.
You can basically get a new Ryzen 5 3600 or a Ryzen 5 2700 and a Vega56 for the same price as an RX5700XT.
If you are on an RX480 or GTX1060,its better to buy a Vega56 and get 50% to 55% extra performance now,and hold off from an RTX2070 or RX5700/RX5700XT.
Even an RTX2060 is better than an RTX2070 or RX5700/RX5700XT in terms of value.
This whole new generation from AMD and Nvidia are a joke in terms of price/performance. If people buy these cards,then forget about mainstream price/performance progression. People will stick with their old cards,or buy new cards which are hardly an upgrade over other mainstream cards which are a few years old. 10% improvement a year or slightly better is rubbish.