CAUTION: Positioning the processor incorrectly can permanently damage the system board or the processor. Be careful not to bend the pins in the ZIF socket. Installing System Components 7 Align the notches in the processor with the socket keys on the ZIF socket. See Figure 3-9. 8 With the release lever on the processor socket in the open position, align the processor with the socket keys and set the processor lightly in the socket. See Figure 3-9. CAUTION: Do not use force to seat the processor. When the processor is positioned correctly, it engages easily into the socket. 9 Close the processor shield. 10 Rotate the socket release lever down until it snaps into place. See Figure 3-9. 11 Using a clean lint-free cloth, remove the thermal grease from the heat sink. 12 Open the grease packet included with your processor kit and apply thermal grease evenly to the center of the top of the new processor. CAUTION: Using excess thermal grease can cause grease to contact the processor shield, which can cause contamination of the processor socket. 13 Install the heat sink. See "Installing the Heat Sink" on page 64. 14 Replace the cooling shroud. See "Installing the Cooling Shroud" on page 61. 15 Close the system. See "Closing the System" on page 59. 16 Reconnect the system and peripherals to their electrical outlets, and turn on the system. 17 Press to enter the System Setup program, and check that the processor information matches the new system configuration. See "System Setup Options at Boot" on page 38. System Memory Your system supports DDR3 registered DIMMs (RDIMMs). Single-, dual- and quad-rank DIMMs can be 800, 1066 or 1333 MHz. The system contains 18 memory sockets split into two sets of nine sockets with one set for each processor. Each nine-socket set is organized into three channels of three memory sockets per channel. The maximum memory that is supported on your system varies according to the types and sizes of memory modules being used: Installing System Components • Single-rank, and dual-rank RDIMMs of sizes 1 GB, 2 GB, 4 GB, and 8 GB are supported for a total of up to 144 GB. • Quad-rank RDIMMs (two per channel) are supported for a total of up to 48 GB. General Memory Module Installation Guidelines To ensure optimal performance of your system, observe the following general guidelines when configuring your system memory. NOTE: Memory configurations that fail to observe these guidelines can prevent your system from starting and producing any video output. • Except for memory channels that are unused, all populated memory channels must have identical configurations. • The memory configuration for each processor must be identical. • Memory modules of different sizes can be mixed in A1–A4 or B1–B4 (for example, 2 GB and 4 GB), but all populated channels must have identical configurations. • For optimizer mode, memory modules are installed in the numeric order of the sockets beginning with A1 or B1. • For memory mirroring or advanced ECC mode, the channel furthest from the processor is unused and memory modules are installed beginning with channel A1 or B1 and proceeding with channel A2 or B2. • Advanced ECC mode requires memory modules that use x4 or x8 DRAM device widths. • The memory speed of each channel depends on the memory configuration: – For single- or dual-rank memory modules: • One memory module per channel supports up to 1333 MHz. • Two memory modules per channel support up to 1066 MHz. • Three memory modules per channel support up to 800 MHz, regardless of memory module speed. – For quad-rank memory modules: • One memory module per channel supports up to 1066 MHz. Installing System Components • Two memory modules per channel are limited to 800 MHz, regardless of the memory module speed. • If quad-rank memory modules are mixed with single- or dual-rank modules, the quad-rank modules must be installed in the sockets with the white release levers. • If memory modules with different speeds are installed, they operate at the speed of the slowest installed memory module(s). Mode-Specific Guidelines Three memory channels are allocated to each processor. The number of channels used and the allowable configurations depend on the memory mode selected. Optimizer (Independent Channel) Mode In this mode, all three channels are populated with identical memory modules. This mode permits a larger total memory capacity but does not support SDDC with x8-based memory modules. A minimal single-channel configuration of one 1 GB memory module per processor is also supported in this mode. Table 3-1 shows sample memory configurations that follow the appropriate memory guidelines stated in this section. The samples show identical memory-module configurations and their physical and available memory totals. The tables do not show mixed or quad-rank memory-module configurations, nor do they address the memory speed considerations of any configuration. Installing System Components Supported Memory Configuration There ar...
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