IBM 866011U Hardware Maintenance Manual - Page 361

core ratio of 4.5 (450/100). Refer to the following table. Note To turn a switch Off, press the switch on the side where the word off is printed. To turn a switch On, press the switch on the side opposite of where the word off is printed. CPU Core Ratio 4.0 4.5 5.0 SW1 Position 1 On On On SW1 Position 2 On Off On SW1 Position 3 On On Off SW1 Position 4 Off Off Off Installing memory-modules You install the memory modules on the processor assembly included in the Processor Upgrade Kit. You must install memory modules that are compatible with the Processor Upgrade Kit. Important When installing memory, keep the following in mind: Install only 3.3 V, 168-pin, 8-byte, registered DIMMs. The memory-module kit sizes available for the server are 128 MB, 256 MB, and 512 MB. The server supports a minimum of 128 MB and a maximum of 2 GB of system memory. Only 100 MHz, 72-bit, registered, synchronous, ECC, x4 configuration DIMMs are supported for the 128, 256 MB and 512 MB DIMMs. Installing or removing memory modules changes the configuration information in the server. After adding or removing a DIMM, save the new configuration information in the Configuration/Setup program. When you restart the server, the system displays a message indicating that the memory configuration has changed. Start the Configuration/Setup program and select Save Settings. Refer to the documentation that comes with the server for more information. Install the first memory module in DIMM socket 4. Install additional memory modules in DIMM sockets 3, 2, and 1 in that order. If you mix DIMM sizes, install the largest sized DIMM in DIMM socket 4, the next largest sized DIMM in DIMM socket 3, and so forth. 2-way Xeon upgrade installation 353