I have a few hardcore gaming friends, and one of them will argue with someone until they're black and blue that having your settings maxed out on your game (as in AA and AF cranked, all of the flashy effects, etc.), will give you a little disadvantage in your play. Based on the principal that the CPU and GPU's have to do more work to catch up with producing those effects which in theory possibly adding a little extra latency. It may not show on your ping, but he swears by it that when you turn down your settings, his play improves. It can make sense. Think about it... if you have two computers with identical specs, one running everything maxed out at 1920x1080 playing against the other running 800x600 running basic graphics settings? Maybe? Maybe not...
I have no idea if there's any credibility to this, I haven't researched it nor argued it because there's no point in debating it with him (like arguing with a wall)... but it's a valid opinion/argument. He also could be completely crazy, and just reacting negatively to the changes.
Correct me if I'm wrong, but the way I always understood online gaming (at least in first person shooters) was that you were sending and receiving co-ordinates, and signals like firing your weapons/jumping/running, whatever you may be doing at any different time, and that it was the servers job, to sync all of every individual players information to well, have a game of shoot em up! This information can't be any bigger than packets you send or receive when you do a ping test on your DOS prompt. So I can't see there being a bandwidth issue with any network card, unless there's something i'm missing. It's not like you're sending information the size of movies or songs or anything like that. I think performance in that respect would just come down to the quality of the network interface itself.
I think someone suggested before that having a better computer would improve your ping to a server... in my recent experience, I have to disagree. I played quite a bit of Call of Duty 4 on my Macbook (with Windows 7 ran from bootcamp, which is basically using the mac hardware to run windows independently, as if it were on a pc), on crappy settings... basically on par with a 3 or 4 year old PC, and I had absolutely no issues with lag, just with hardware not capable of performing up to par. I recently got a new PC, and my connection/ping remained exactly the same, as well timing/latency - even with graphics settings on max (which goes against my buddy's theory).
Anyway. Just some food for thought. Feel free to disagree
Back to the topic at hand:
Got a new Corsair 600T case today, that thing is a monster! I barely fit the box into my trunk!