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I upgraded from a R9 390 to a RTX 3070 FE. Really pleased, got more than 3 times the FPS at 4K on the Witcher 3 (around 70 FPS minimum). DLSS 4K works very well.
Worth it if you can get it at RRP, and have some cash to spare. Or, you could wait until next year to get a similar graphics card with more VRAM.
What worked for me was buying via a discord alert.
they're only slightly faster than a 390Get a second hand Amd rx 480/580.
Get a second hand Amd rx 480/580.
As everyone has said, keep hold of you 390 for the time being unless you want to pay 2 x RRP for literally anything.