I've had an Akasa Vortexx Neo
installed on an EVGA 8800GT for about 2 years. It's extremely quiet, and is nearly identical to HIS's ICEQ-3/ICEQ-4 cooler designs. The trouble with these coolers is, they're almost impossible to find in North America. You may have better luck if you're in Europe, though.
It (like the Zalman) uses a 3-pin connector and comes with a 3-pin to 4-pin MOLEX adapter. Unfortunately, it's accessory kit doesn't included any sort of heatsink(s) for the VRM of any card which it fits. I'd advise ordering some low-profile heatsinks from Scythe, Enzotech, or Zalman separately.