AD700s HD668B's Soundcard

[Pentium8]

Hi there, I am looking at either purchasing some AD700's or some Superlux HD668B's mainly for gaming. Problem is I only have onboard sound at the moment and this would severely diminish the quality of these headphones right?
So I am looking to buy a sound card. I do not want to spend any more than I have too. It is mainly going to be used for gaming so I think the most important factors are : does it have EAX? or Dolby Surround Sound?
Now if I purchased the AD-700's which sound card would give the best performance in fps gaming for a low price.
The same question applies to the HD668B's if I purchased them which sound card would compliment it the best in fps games (ie Call of Duty 4)
Yours thoughts and opinions are welcomed
Thanks

[ledge]

maybe the asus xonar ds ? less than $90 bucks. its pretty good value.

yep at least get a decent soundcard to go with the AD700s.

[Riverback]

Yep, don't have to splurge big to game with the AD700's. Something like the Xonar DG or DX would be good enough