Originally posted by: Concillian
When tested in it's heyday Soundstorm offered lower CPU utilization than comparable Creative products. More current Creative products are probably better, especially in that they offer support for EAX 3 and 4.
It is compatible with EAX and EAX2 and is hardware accelerated.
In most cases, even software sound doesn't really hurt FPS, because most people run at a resolution and with video settings that make the video card the primary bottleneck. There is generally plenty of CPU left over. For example, when I was playing BFV, I had an Athlon XP Mobile, and I ran some benchmarks, turning my CPU down 200 MHz at a time at my normal settings. I got to 1400 MHz before I saw ANY difference in my framerates.
Similarly, now that I have an A64 and play WoW and BF2, I initially set my system up OC'd as far as I could go (~2.5GHz from 1.8GHz). I played for a while like that, then decided to see what it was like the stock 1.8GHz speed. Surprisingly, I noticed no difference with a pretty solid video card (x800XL) at my normal settings.
Be careful to note resolutions and video settings when ever anyone is talking about FPS of a game being impacted by CPU. Normally it's not as large an issue as they might have you believe. Also it may or may not have a noticeable difference, because rarely will CPU impact the times when you have LOWEST FPS. My experience in turning down my CPU notch by notch in BFV showed that when the average FPS dropped it was almost always the highest FPS places that were dropping, while the low FPS places were staying relatively the same. This review shows a similar effect to what I observed in the "Memory and CPU section near the bottom portion:
http://theinquirer.net/?article=23973
Lastly, I find headphones + games are a very good combination. 3D positional audio works pretty well in headphones. At least to me it felt better than using a 5.0 setup.