Go Back   MacRumors Forums > Apple Hardware > Desktops > Mac Pro

Reply
 
Thread Tools Search this Thread Display Modes
Old Jan 25, 2013, 09:26 PM   #1
jfl007
macrumors newbie
 
Join Date: Jan 2013
Need help memory problems after major MacPro 1.1 upgrade

I started with a MacPro 1.1 and upgraded the following:
1. CPU from 2/dual-core to 2/quad x5355
2. upgrade graphic card to ATI Radeon 5770
3. added additional hard drive, seagate barracuda 7200 3 TB
4. memory from 6GB to 16GB
5. And after upgrade, updated firmware to 2.1 to recognize CPU

Everything went well with all the installation. BUT I noticed a red light on my lower memory board, DIMM1. Also noticed that it showed in About This Mac, as 16GB but in the Activity Monitor it was showing only 8GB. I tried switching the memory from top to bottom and even switch the board but I still get the red light in the lower memory board. It seems it's not reading or recognizing the lower memory board according to the Activity Monitor although it showing as 16GB in the About This Mac.

Second thing I noticed was that according to the Temperature Monitor the lower memory DIMM 3 and 4 were showing up really high 172C. So I took out all the memory and just placed 2/2GB at top and 2/2GB at the bottom. Red light is still there and it shows only 4GB in the Activity Monitor. Still not reading the lower memory board. So I placed 4/2GB on top and 2/2GB on bottom, and it shows at 8GB. Now I just have 4/2GB on top only.

I tried everything possible and googled for answers without any results. I even reset PMU and nothing. I don't think it's the memory cause I switch them around in every different ways. I don't think it's the memory board cause I tried switching them from top to bottom also. Could it be a problem with the lower memory board slot? If so, can that be replaced without costing an arm and a leg? Or is there anything else I missed that I could try? Looking for some answers from experts. HELP!!!!
jfl007 is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Desktops > Mac Pro

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
MacPro 1,1 CPU Upgrade > Easier OS Upgrade zahntron Mac Pro 2 Dec 23, 2013 12:52 PM
MacPro seeing only 4 GB of memory on Titan Akira28.com Mac Pro 8 Dec 19, 2013 09:55 AM
Upgrade RAM: Two, 2GB memory cards or will one 4GB memory card work? cmhall9 MacBook Pro 6 Dec 2, 2013 02:05 PM
MacPro 4,1 W3540 2.9 to MacPro 5,1 W3580 3.3 Upgrade - Step by Step Shots - Success! chris.k Mac Pro 22 Jun 1, 2013 07:22 AM
Build a 16 core Hakintosh, upgrade a previous MacPro or reluctantly buy new MacPro??? Jaylongeee Mac Pro 24 Jul 13, 2012 02:37 PM

Forum Jump

All times are GMT -5. The time now is 09:15 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC