34 to 37c. Mine does that, depending on room temp, with a 250mhz overclock. That's according to mbm5 and my bios. Do I believe it? Not for one second. My hsf shows up at 42 on an infrared t-stat. Point is, you cant trust the sensor. If you have the Msi K8N board, you need to install the new bios to get it to show lower, but it's all bs.