Sent back the 3D Fuzion 7600GS.
Rcvd a BFG 7600GT, and have used it one hour. No problems installing it, but I wanted to bring up nView (3 monitors) and it took most of that hour to download latest drivers & manuals. Finally realized one must install the drivers w/ the onboard chip disabled; later one can re-enable the onboard chip. Everything works now, though I've hardly run anything -- no GPU exercising toys.
On power-up the BFG sounded like a vacuum cleaner; before I got nView working with the three monitors, it shut down to a quiet level. Now that I'm two monitors off the BFG, however, the noise stays unacceptibly high for my once silent PC. 'Probably lower than that initial vacuum cleaner, but way too high for any bedroom or HTPC. And this is w/o anything more taxing than editing a forum posting on one! Sigh.
Conclusions:
1. I'll damn that 3D Fuzion on this m/b as there were no problems with the BFG. But I can't say there aren't -some- 7600GS's out there that are compatible.
2. The BFG 7600GT is not acceptible in any near-silent PC, judging by its noise under negligable load. Elsewhere some folks had posted it was noisy, while others found it surprisingly quiet. The latter may be deaf.
I'm interested in any replacement cooling solutions which do not take up a second slot or extend above the card. Or, in other quiet card experiences/successes. While I apprecitate & respect avi85's suggestions, the 7600GS was the low end of what I'd like in GPU power. Then again, maybe -that- cut-off has to be reconsidered!
PS: Still amazes me how many typographical errors have consequential effects in Windows! Something I typed a few minutes ago -published- this note well before I was finished. Not as many bizarre moments in FireFox as in Word, but... always a surprise or two....