Between 65-75 Degrees centigrade. It also depends on the environment surrounding the case.
We take care to ensure there is lots of air flow within each unit (each fan port will be utilized), and we custom tweak each unit until they are hashing 1800 khash/s on average over 24 hours prior to shipping.
We are still accepting orders. Please PM me for more information.
Those are unbelievably impressive temperatures for a 3 GPU aircooled rig in an Antec Eleven Hundred, since Anandtech measured a single GPU rig hitting almost 50C above ambient.
Do you have screenshots to substantiate your claim?