By eye it looks as if the only usable PCI slot is PCI1 which sits very snug inbetween the two 6950's. Will my soundcard fit in here and even if it does, will it be practical sitting inbetween those 2 cards with all that heat?
out of interest, are the 6950's fitted with the standard amd heatsink assembly or 3rd party ones? if the standard ones the the soundcard won't be long enough to impead circulation and airflow into the top graphics card, and puts out such a minute amount of heat itself that it won't affect system temps. an exotic cooling solution on them & you're prolly screwed though.
@osamabinrobot that is an option I didnt think off so thanks although i have become particularly interested in the sound card I mentioned so your idea would be a plan B
@neon neophyte this is my worry, although like jpoos said, would a soundcard sitting inbetween the 2 6950's really have a major effect on cooling considering the soundcard itself shouldnt output much heat