IBM SCOD-3ZVQ5W - Manual (Page 185)

Chapter 14. System x3500 177
31R3775 - 0651 Intel Xeon Processor 7020 3RY
31R3777 - 0652 Intel Xeon Processor 7040 4RY
SBB
Number
Option
Number
Feature
Code Processor Upgrades 1 SMP Support