IBM 8681 Hardware Maintenance Manual - Page 155

Notes 1. The illustrations in this section might differ slightly from your hardware. 2. To ensure proper server operation, when you install an additional processor, use processors with the same cache size and core frequency as those of the currently installed processor. 3. If you replace the processors in the server with processors of a different speed, be sure to set the processor core frequency selection jumper block correctly. (See "Processor-controller board jumpers" on page 141 for more information. For a list of supported processor speeds, see http://www.ibm.com/pc/us/support/ on the World Wide Web.) 4. To maintain signal quality and system reliability, either a processor or a processor terminator card must be installed in each processor connector. A processor must be installed in processor connector A1 on the standard processor daughterboard (A). 5. If you are installing an optional processor daughterboard (B), you must also install the two cache coherency filter cards in the two adjacent, vertical slots between the two processor daughterboards on the processor controller board. (See "Processor-daughterboard component locations" on page 143 for the location of the cache coherency filter card A and the cache coherency filter card B connectors.) Netfinity 8500R - Type 8681 147