I was working with a budget pretty similar to yours a couple months back. After asking around r/headphones a bit, I ended up going with the Superlux HD 681.
They look a bit hokey but sound pretty incredible for ~$30.
If you've never used open-ear headphones, they leak quite a bit of sound in...
Have you tried playing actual games with the Afterburner OSD showing your voltages/clocks?
I have the exact same card and a lot of the time it likes to revert to stock for some reason. No artifacts or freezes at all, it just runs at stock until I go back into Afterburner and set the OC again...
Not quite a "forum" but there's a GW2 subreddit that's ballooning in size since the media blitz a week ago. Plus the AMA the dev did shows they at least pop in occasionally.
I'm about 5 hours in and so far at least, the game pretty much holds your hand. So honestly, I wouldn't worry too much about it.
Just have a general idea what kind of role you want to play (tank, DPS, etc.) and follow the prompts. :)
Optionally, plenty of stickies with misc info in the official...
This thread convinced me to try it out.
Spent 2 hours making my PC, hit "Play!" and then I get "Character Creation Failed". :(
Turns out there's a 15 minute idle autokick and it ignores character creation.
Then in my rush to do it all again in under 5 minutes, I forgot to set her uniform. :o...
Not much in the way of modding, but if you like circuit racing then NFS: SHIFT and NFS: SHIFT 2 Unleashed are pretty fun.
I had a blast with both SHIFT games on the HTPC with a 360 gamepad. Makes me wish for a steering wheel/pedal setup though. :(