Hello, I have a severely underperforming R9 290X. But here's the catch, when I updated to the latest drivers from this website, my video card began to self-identify as an HD8970M. So I'm confused about that firstly. In any event, I get pretty severe framerate dips after about 30-45 seconds of playing F.E.A.R., which is an older game admittedly. While some newer games seem to perform generally better (such as F.E.A.R. 2, Aliens Vs Predator), they're not performing anywhere near what I'd expect from a fairly new video card with 4GB of dedicated video RAM. One game in particular seems to give my video card an especially hard time - Dead Island. You can just tell by the look and feel of it, that the video card is barely able to run it.
I ran 3DMark and got very disappointing results. Not the kind of thing you'd expect from an Alienware.
So, what might account for a 4GB GPU behaving like a 512MB? That's how I feel about this video card, anyhow. Here are some system specs:
Alienware 17 (mid 2013)
2.5 GHZ Quad Core (i7)
16 GB RAM
Radeon R9 290X and/or HD8970M