Mined on for 4 months. Stock clocks were kept for most of that time. More recently at 1ghz core. Fans at 75% or below. Temps 73 Celsius or less. High quality PSU & power filtering UPS was used.
Mines litecoin @ 500 k/h at stock clocks. I didn't have the time or inclination to overclock to the max. There are reports that with 1100 core, 1450 mem, and proper cgminer settings, these will do 700k/h.
Asking $370 each. Shipping from Canada $35. To USA $45.