TS ON DIMM
TS on DIMM is a closed-loop throttling technique that offers a more advanced approach to system thermal management through the use of a physical thermal sensor to further reduce guardband present in the existing methods. The reduction of guardband has a direct and positive impact on system performance.... Instead of using power prediction to estimate the temperature of the DRAM case, TS on DIMM uses a physical thermal sensor integrated on the DIMM module to monitor the temperature of DIMM...The SMBus master is inside the chipset. The sensor acts as a slave sitting on the SMBus with SPD on a module. Physically, the sensor and SPD  can be either integrated into one package as shown in Figure 3 or separated as two stand-alone parts on a module. However, the thermal sensor and the SPD are two separate logical functions using two different SMBus addresses. At power up, BIOS read data from the SPD and initiate the thermal sensor by programming its registers via SMBus, including setting the critical threshold value. When the initiation is complete, the thermal sensor will begin monitoring the temperatures and assert the Event# signal when the temperature of the sensor exceeds the critical trip point. Once the thermal sensor is initiated the system can also poll the thermal sensor via the SMBus at any time and monitor the temperatures real-time.