8 Replies Latest reply: Nov 10, 2011 1:15 AM by japamac
Amed Level 1 (0 points)

I'm looking to replace my 2.0 ghz dual G5's processors. I searched online and I found a good pair, but the come from also a 2.0 dual model no. A1047 EMC 1969. My Mac's model number is A1047 EMC 1969C the only difference is the EMC. Do you think the processors will fit to my computer? I really need to know before I make the purchase. Thanks.

  • Amed Level 1 (0 points)

    Any ideas anyone? I just need to know if the replacement CPU's fit on my Power Mac, the EMC number on mine is 1969C and the other Mac's (the one I'm getting the processors from) is just 1969, both have the same model no. A1047 and same capacity (2.0 GHZ) processors.

  • Limnos Level 8 (46,075 points)

    You'll have to be patient. There's a limited number of users on this forum and they aren't around 24 hours a day (it may not even be day where some of them are). I'm sure if somebody knows the answer they'll post it.  It will take pretty specialized knowledge. I could only find one web site that even mentioned those two processor models.




    It seems the difference is mainly one in power consumption, but then I have two cars identical in year of manufacture and model, but since they were made in two different months you notice little differences which mean parts from one won't work in the other.

  • japamac Level 7 (24,385 points)

    Only the EEE code will help determine compatibility.

    EEE Code Note: All Apple Processor have a special three digit "EEE" code embedded in the Processor serial number which positively identifies the part. Please note that this is the serial number of the Processor, NOT the serial number of the machine. The Processor serial number is on a tag which has the format "xxxxxxxEEEx". The "EEE" code is the three letters immediately preceding the last digit of the serial number.




    • Part Number: 661-3331
    • Product EEE Code: R06, R2R, R2S, R2T, R2U, RDV, RDW, RDX, RDY, RDZ
    • Compatibility: Power Mac G5, Power Mac G5 (June 2004)

    • Part Number: 661-3144, 661-3144-R
    • Product EEE Code: P11, Q7A, Q7B, Q7C, Q9C, Q9D, Q9E, QA3, QJJ, QJK, QJL, QJM, QX5, QX6, QX7, QX8, QX9, QZZ, R00, R01, R02, R03
    • Compatibility: Power Mac G5

    • Part Number: 603-6894
    • Product EEE Code : SLK, SLL, SY9
    • Compatibility: Power Mac G5, Power Mac G5 (Early 2005)



  • Amed Level 1 (0 points)

    ok ok, the serial number that the seller gives for the processors is: Part #630-6606 - #J54227002GRDW8, my question is if the serial number is the same on both CPUs since he only gave that number and they are pull outs from the same machine. My PowerMac's model year is June 2004 according to "techs specs" at the apple support site where you enter the machine's serial number. I'm not even going to bother looking at my bad CPU's serial number since they are not the original ones.

  • Amed Level 1 (0 points)

    I ordered the CPUs with the heatsink installed. So do I still have to use thermal paste to install them on my powermac?

  • japamac Level 7 (24,385 points)


    You will also need to run Thermal Calibration using the ASD (Apple Service Disc) 2.5.8.

  • Amed Level 1 (0 points)

    Well the replacement of the CPU is still attached to the heat sink, they are pull outs from a different machine so do I have remove the heat sink from the CPU, put some thermal paste to the actual CPU chip, or do I just leave it like it is?

  • japamac Level 7 (24,385 points)

    If you do not seperate the CPU and heat sink, one might assume that the old compound is present and adequate.


    However, because one does not know exactly what has or has not been done, I believe it to be prudent to seperate the parts, check the condition of and likely replace the thermal compound.


    Thermal compound isn't forever.

    Mainstream compounds last 5 years max.....