Missing CPU, help from the oMP upgraders?

echoout

macrumors 6502a
Original poster
Aug 15, 2007
600
16
Austin, Texas
So, I picked up a couple X5690s from a trustworthy source and they had passed testing. This is my second 2009 to upgrade and the first CPU was routing, but the 2nd would just boot straight up without issue and not recognize CPU B.

I tried different thicknesses of Arctic Silver, I've made sure the fan connector is plugged in, and when I swapped CPUs, the behavior was identical. No pins in the CPU B seem noticeably bent. I have no idea where to go from here to get CPU B up and running.

Any thoughts?

The next thing will be to put the original CPUs back in and see how it goes.

Thanks for your help, folks.
 

analog guy

macrumors 6502
Mar 6, 2009
358
0
So, I picked up a couple X5690s from a trustworthy source and they had passed testing. This is my second 2009 to upgrade and the first CPU was routing, but the 2nd would just boot straight up without issue and not recognize CPU B.

I tried different thicknesses of Arctic Silver, I've made sure the fan connector is plugged in, and when I swapped CPUs, the behavior was identical. No pins in the CPU B seem noticeably bent. I have no idea where to go from here to get CPU B up and running.

Any thoughts?

The next thing will be to put the original CPUs back in and see how it goes.

Thanks for your help, folks.
insert CPU B into machine A and CPU A into machine B, to confirm whether it is indeed a problem with CPU B and not something else.
 

azentropy

macrumors 68020
Jul 19, 2002
2,183
1,094
Surprise
So, I picked up a couple X5690s from a trustworthy source and they had passed testing. This is my second 2009 to upgrade and the first CPU was routing, but the 2nd would just boot straight up without issue and not recognize CPU B.

I tried different thicknesses of Arctic Silver, I've made sure the fan connector is plugged in, and when I swapped CPUs, the behavior was identical. No pins in the CPU B seem noticeably bent. I have no idea where to go from here to get CPU B up and running.

Any thoughts?

The next thing will be to put the original CPUs back in and see how it goes.

Thanks for your help, folks.
Double check to see if they are an exact matched pair.
 

echoout

macrumors 6502a
Original poster
Aug 15, 2007
600
16
Austin, Texas
The saga continues...

Okay, went and exchanged processors and am having the exact same behavior. CPU A by itself looks great and is recognized. When I put in CPU B, when it starts, the system shows only one processor and even more strange, the "number of cores" shows as "1".

I DID swap in the original processors and everything was peachy. So makes me think my tray, pins, connectors, etc. are all good.

So, what is it about a second processor that could make it consistently not show up and make the first show as a single core?

Of note!… when a single CPU is on the tray, the fans aren't blowing up like we've come to expect them to. The system just runs as a single processor, I think. Do I need to reflash the firmware?