game settings

So title says a lot actually. When changing video settings on Red Dead Redemption 2 it shows like 4GB Out of 9,3GB available on my 11gb card RTX2080ti card? My friend has the same issue, but it shows 6,7GB out of 8GB on his rtx 2080 8GB card. Is it a video card issue or game issue? I ran...

I am looking to get new RAM. If I get, for example, two sticks of HyperX Fury how easy is it to buy the same set again and install it in the future? I don't understand things like Dual Channel / Quad Channel. It's not sold as a set of 4 so would that make any difference to whether I can use 4...

Looking for replacement for Sony AC-E1826 Power adapter 18V 2.6A (which gone dead after recent thunderstorm) for my http://www.sony.co.in/product/srs-d9 looking at ebay/amazon all i could find is 18.5V 3.5A 65W..... which is not the 18v 2.6a. but is it ok to run sony sound system with such...