Page File: 2382MB used, 30242MB available
From the DXDIAG report you provided. It looks like you are using a WD Blue HDD? That product came up for the drive name I found. But I couldn't find the exact model of drive.
The person in the video I believe has 32GB of ram running at 2400mhz and he is using a corsair SSD.
If you are using your page file a lot, this would cause performance issues.
Also in that video he is doing the benchmark "before" the ultra pack came out. If you are benchmarking at ultra settings then you would probably have lower results.
Post system specs please so we can see what you have.
Try dropping to high settings and see if your scores get closer.
Find out why you are using so much of the page file? I have 16gb of Ram with page file turned on and I am using 0%.
You said you reinstalled windows 8 64bit. from windows 7. Was it a clean install? did you download ALL drivers?
You said the RAM and HDD are "stock" What PC did you buy originally for them to be stock.?
I have night shift in a bit and won't be on till tomorrow. But I will come back and help then.
Also take a look at this thread.
http://www.techpowerup.com/forums/t...h-performance-and-gameplay-discussion.205962/