Well, I ordered a 970 as it was on offer... I've tested Fallout 4 and AC:Syndicate.
Before, I was able to play at 1440p with some frame rate drops, now I'm able to play both games on Ultra (AC:S with medium textures) at 4k with a solid and playable frame rate of ~55-70.
I'm actually very impressed, so far, I was not expecting to able to play at 4k - especially Fallout 4 on 4k Ultra!
Pascal would have been the better option, maybe, but after an hour of testing, this seems acceptable. And I do hope it will last.
One thing I'm unsure about is this; VRAM doesn't stack, yet I'm able to play 4K with High (AC:S N/A) or Ultra. Before, I was not able to - Why?
AMD Ryzen R9 5900X
ASUS ROG Strix B550-E (the worst motherboard I've owned in 25 years)
Corsair H150i Pro XT 360mm
32GB Corsair VENGEANGE LPX 3600MHz CL18
EVGA RTX 3080 FTW Hybrid w/ 280mm radiator
M.2 WD 1TB SN550 | 2 * WD Blue 1TB SATA | 2 * Toshiba N300 8TB | 400TB on a 48-bay Supermicro server
Fractal Meshify 2
Microsoft Windows 11 Pro