Acer AW2000ht-AW170ht F1 Acer AW2000ht w AW170htx F1 Server Service Guide - Page 77

Advanced Chipset Control The items included in the Advanced Settings submenu are listed below: CPU Bridge configuration QPI Links Speed: This feature selects QPI data transfer speed. IMPORTANT:The following feature is only available when QPI Links Speed is set to Full Speed. QPI Frequency: This selects the desired QPI frequency. QPI L0s and L1: This enables the QPI power state to low power. L0s and L1 are automatically selected by the motherboard. Memory Frequency: This feature enables you to force a DDR3 frequency slower than what the system has detected. Memory Frequency: Allows you to force a DDR3 memory module to run at a frequency other than what the system has detected. Memory Mode: Set the memory mode. • Independent - All DIMMs are available to the operating system. • Channel Mirror - The motherboard maintains two identical copies of all data in memory for redundancy. • Lockstep - The motherboard uses two areas of memory to run the same set of operations in parallel. Demand Scrubbing: A memory error-correction scheme where the processor writes corrected data back into the memory block from where it was read by the processor. Patrol Scrubbing: A memory error-correction scheme that works in the background looking for and correcting resident errors. Throttling - Closed Loop/Throttling - Open Loop: Throttling improves reliability and reduces power in the processor by automatic voltage control during processor idle states. If Enabled, the following items will appear: • Hysteresis Temperature (For Closed Loop only) - Temperature Hysteresis is the temperature lag (in degrees Celsius) after the set DIMM temperature threshold is reached before Closed Loop Throttling begins. • Guardband Temperature (For the Closed Loop only) - This is the temperature which applies to the DIMM temperature threshold. Steps are in 0.5 °C increments. The default is [006]. Press "+" or "-" on your keyboard to change this value. • Inlet Temperature - This is the temperature detected at the chassis inlet. Steps are in 0.5 °C increments. The default is [070]. Press "+" or "-" on your keyboard to change this value. • Temperature Rise - This is the temperature rise to the DIMM thermal zone. Steps are in 0.5 °C increments. The default is [020]. Press "+" or "-" on your keyboard to change this value. • Air Flow - This is the air flow speed to the DIMM modules. Each step is one mm/sec. The default is [1500]. Press "+" or "-" on your keyboard to change this value. • Altitude - This feature defines how many meters above or below sea level the system is located. • DIMM Pitch - This is the physical space between each DIMM module. Each step is 1/1000 of an inch. The default is [400]. Press "+" or "-" on your keyboard to change this value. North Bridge configuration This feature allows you to configure the settings for the Intel North Bridge chip. Intel I/OAT: Significantly reduces CPU overhead by leveraging CPU architectural improvements, freeing resources for other tasks. DCA Technology: Uses Intel's DCA (Direct Cache Access) Technology to enhance data transfer effi ciency. Chapter 9 71