Hi, I have pretty old pc system (i7 920 @ 3,7ghz, 10gb ram and gtx 670) and I want to upgrade. I cant rlly buy new cpu cos I would have to replace practically everything (mobo,ram etc) so Im thinking about replacing my GPU for something like gtx 1650 super or rx 5500xt. Does it make sense or is it not worth it? Thx.
I can't really agree with that. Obviously pairing newer GPUs with older CPUs will always have a negative impact, but there will still be positive gains with faster GPUs until you hit the very high end. Also depends on what you are running. A 4K screen and your CPU matters a lot less.
Now if you are going after high refresh, I agree.
Had my old i7-950 running at 3.67Ghz paired with a GTX970 for a while, ran most modern titles relatively well. That isn't too far behind these selections. I imagine it might struggle with some of the very latest games, but it is still a quad core with hyperthreading.
There is also the factor of how long the CPU and motherboard will be kept. If the plan is within a year or two, buying a slightly faster GPU now will save the trouble in buying another GPU when that upgrade happens.