[jan-jaap]

You do not need to change memory.

Only some systems like the Origin and Onyx2 can show this with "hinv -mv", e.g. my O350:

Code:

Memory at Module 001c01/Slot 0: 8192 MB (enabled)
  Bank 0 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 1 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 2 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 3 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 4 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 5 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 6 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 7 contains 1024 MB (Premium) DIMMS (enabled)
Memory at Module 001c02/Slot 0: 8192 MB (enabled)
  Bank 0 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 1 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 2 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 3 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 4 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 5 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 6 contains 1024 MB (Premium) DIMMS (enabled)
  Bank 7 contains 1024 MB (Premium) DIMMS (enabled)

Since you're talking about going from a R12000 300Mhz to a R14000 600 Mhz I'm going to assume an Octane here. The Octane doesn't show this information. To install an R14K CPU, your mainboard must be the "1467" revision, not the "0887" revision. This is visible in the output of "hinv -mv". Here's a sample from an Octane with a 300MHz CPU and an "0887" mainboard (2nd and 4th line):

Code:

Location: /hw/node
      PM10300MHZ Board: barcode HML109     part 030-1355-001 rev  J
Location: /hw/node/xtalk/15
            IP30 Board: barcode HMT046     part 030-0887-005 rev  A
Location: /hw/node/xtalk/15/pci/2
    PWR.SPPLY.ER Board: barcode AAE9050433 part 060-0035-001 rev  C
             FP1 Board: barcode JBZ155     part 030-0891-003 rev  E
Location: /hw/node/xtalk/12
           MOT10 Board: barcode HMG917     part 030-1241-002 rev  H
1 300 MHZ IP30 Processor
Heart ASIC: Revision E
CPU: MIPS R12000 Processor Chip Revision: 2.3
FPU: MIPS R12010 Floating Point Chip Revision: 0.0
Main memory size: 512 Mbytes
Xbow ASIC: Revision 1.3
Instruction cache size: 32 Kbytes
Data cache size: 32 Kbytes
Secondary unified instruction/data cache size: 2 Mbytes
Integral SCSI controller 0: Version QL1040B (rev. 2), single ended
  Disk drive: unit 1 on SCSI controller 0 (unit 1)
Integral SCSI controller 1: Version QL1040B (rev. 2), single ended
  CDROM: unit 3 on SCSI controller 1
IOC3/IOC4 serial port: tty1
IOC3/IOC4 serial port: tty2
IOC3 parallel port: plp1
Graphics board: ESI
Integral Fast Ethernet: ef0, version 1, pci 2
Iris Audio Processor: version RAD revision 12.0, number 1
  PCI Adapter ID (vendor 0x10a9, device 0x0003) PCI slot 2
  PCI Adapter ID (vendor 0x1077, device 0x1020) PCI slot 0
  PCI Adapter ID (vendor 0x1077, device 0x1020) PCI slot 1
  PCI Adapter ID (vendor 0x10a9, device 0x0005) PCI slot 3