[mclingo]

we need to get some figures, people keep saying AMD's are weak with MADVR but all I can see is just hearsay, are there any benchmarks, how weak exactly and compared to which nvidia cards with how many shader units etc etc, I know MADSHI says AMD arent as good but it could be a very small amount and therefore the price difference may more than make up for this.

I agree though, I wouldnt bother upgrading before you get your TV, check out the RX 560 first, you will probably find its perfectly fine.

 There have already been many benchmarks. AMD cards are mostly slow at NGU neural network image processing. They are maybe half as fast as Nvidia, if not more.

For example, an RX 580 can run NGU high if you lower the setting for chroma upscaling. As where a GTX 1060 can run NGU high for upscaling without much effort and some level of NGU for chroma. Some other processing is also slower on AMD. It isn't just spitballing. 

i can already run NGU sharp high for both upsclaing and chroma with my RX580, rendering is just over 20ms, I could push a lot further than that but it goets hot, however most of the heat problems with my card are down to my really poor setup. I have my PC in a very small cupboard under my TV, there no real  ventilation. The cupboard sits on an outside wall so i'm going to vent it in summer.

I'd be interested to see some of these benchmarks, do you have a link, just out of interest though.