I am looking for a new GPU and I have chosen the GTX 770. I see there are 2GB and 4GB versions. What does it mean and is it worth the extra cash for 4GB?
The gigabytes in your gpu is the gpu's ram. (vram) It's used for storing information that needs to be accessed quickly. However 2gb will be just fine for any game at 1080p. However if you're running at 1440p with antialias and such 3gb and upwards can be worth it.
If you're running 1080p or mild 1440p like most people it would be best to stay at 2gb as your gpu would be to slow anyway once games actually starts to take advantage of the extra vram.
2 GB should be fine if you aren't playing with super AA and Watch Dogs at Ultra. 4 GB, on the other hand, would last MUCH longer in the gaming department as games start to use more VRAM (upwards of 3 GB soon).
The gigabytes in your gpu is the gpu's ram. (vram) It's used for storing information that needs to be accessed quickly. However 2gb will be just fine for any game at 1080p. However if you're running at 1440p with antialias and such 3gb and upwards can be worth it.
If you're running 1080p or mild 1440p like most people it would be best to stay at 2gb as your gpu would be to slow anyway once games actually starts to take advantage of the extra vram.