Mac pro 2006 won't recognize ram

Hey Everyone.....I'm not a giant techie, but now my way around a computer more than most I guess...here's my question...
I have a Mac Pro 2006 running 2ghz dual core xeon processors and with 2gbs Ram (2GB x 4).....I just finally upgraded my ram and purchased 8gb's (4GB x 2)!
I installed the new ram in Riser A in slots 1 & 2, and moved the old ram all to Riser B in slots 1-4 but I think I screwed something up. I booted up my machine and it recognizes the 8gb modules (whew!) but doesn't recognize the old 2gb's. I don't know what configuration I should use.
Should I have Riser A full with slots 1-4 occupied by my new 8gb's and a pair of the 512's, putting 9gb's on Riser A?? Then I would put the second 512's on Riser B?? 9 on Riser A and 1 on B??
8GB Ram is making such a great performance upgrade, but 10GB's of Ram would be pretty sweet too!! :)
Thanks for any and all help.

Assuming that the new RAM is for Mac Pro and "look the same"
Sometimes two brands or different sets from the same make don't get along.
Where you installed is fine.
I didn't understand what it was, and what it is now.
You have:
4 x 512MB for 2GB
4 x 2GB
2 x 4GB
Ideal would be
Riser A: 2 x 4GB
Riser B: 2 x 2GB
See if that works first.
Run Apple Hardware Test
The math and figures you posted don't add up for me.

Similar Messages

Mac pro 2006 won't boot after lion install

hi,
under 10.6.8 everything worked fine. All adapters and peripherals were functional.
After a normal looking lion install my mac pro 2006 will not make it past the boot screen (Grey Apple logo with spinning wheel). After a while the spinning wheel stopped spinning but I hear disk I/O continue for some time. A verbose boot lists the usual output. The last line visible has a mention of macos_swapon or something like that. I do note the first couple of lines specify a 64 bit kernel is booting. I was under the impression that this machine cannot run the 64 bit kernel from snow leopard discussions.
The video card is an upgraded one (i.e. not the stock card that came with the machine). However as I said before it was working fine under snow leopard.
Any ideas?

I have the same problem. I did a clean install of Lion and created a temp account. I was able to use Lion for a bit, then I used the Migration Assistant to bring my regular accounts back in from an external drive. When that completed I logged off of the temp account and into my main account (without restarting). Still no problems, Lion was working fine. I shut the Macbook down for the night. Now that I'm powering it on the next morning, I only get the Apple logo and spinning wheel.
I tried a PRAM zap, but it didn't help.

Mac Pro 2006 won't boot after attempted cpu swap, Mac Pro 2006 won't boot after attempted cpu swap

I just picked up a used Mac Pro 1,1 (2006). It has 2x2.0 GHz dual-core processors and 5GB of RAM with the 7300GT card.
In this configuration, the machine was running perfectly. I, of course, wanted to upgrade....
I ordered a pair of 5160 3.0GHz processors cheaply and followed a video tutorial to install them. I used Arctic Cleaner and Arctic Silver 5 for the thermal paste.
Bottom line is: I installed the two new processors and when I fired it up, I could hear the fans, optical drive and hard drives all spinning (normal fan speed - NOT "jet mode", and the HD sounds like it's spinning - NOT like it's booting). NO boot chime and NO display. I popped the cover off and saw the CPU B FAIL light on. I swapped CPUs to test the processor, expecting to see the CPU A FAIL light come on. It did not. It just powered the fans/drives with no result (again, with no boot chime and no display).
To make a long and frustrating story short, I wound up putting one of the original 2.0GHz processors in slot A, leaving B empty (maybe I damaged the socket?) and IT STILL WILL NOT BOOT. I have tried all of my processors - the original 2.0GHz and the new 3.0GHz ones - with the same result. There are NO symtoms or indications - no error LEDs, no beeps - no indication why this machine will not boot.
I have reset the SMC, pulled (and replaced) the coin battery, and left it unplugged for over an hour. I have re-seated everything I can think of.
As of rigt now, I can hear the fans quietly humming with the optical drive making a quiet "click" sound as it seeks for a disk to read, and I can hear the faint chatter of the HD head. The power LED is nice and bright (no flashes or pulses), and there are no red LEDs on inside the case. The memory LEDs flash once during bootup and that's it (it's the RAM the machine came with). Pressing the DIAG LED button tells me the machine has power (green LED), has trickle (yellow LED) and the GPU light flashes green.
Of note, during the swap, I got a tiny bit of thermal paste (non conductive) on the contacts of my 2.0 CPUs - which I cleaned off with alcohol and let dry. The gold contacts all appear to be good on the original processors. I can't really see the tiny little pins in the CPU sockets (my eyes are not as young as they used to be!), but the "look" like they're all there.
I'm going to leave this unplugged overnight, but does anyone have any ideas?? If I managed to somehow destroy ALL of the CPUs, wouldn't I get a warning LED or beep or something? Ideas are welcome, as I cannot afford to replace this machine - it has to get me the rest of the way through college.
thanks
Richard

Hello Grant
>
Hardware sets the fans to maximum, and only properly-operating software resets them to "normal levels. If you have fans at normal levels, some software is running.
>
That's what I was thinking, but I'm not even getting the startup chime, and the HD sounds like it's powered on but not doing anything.
EDITED TO ASK: what software could be running at this point? Nothing has loaded from the HD, that much I know...
>Do you still have CPU A or CPU B failure lights?
No. I have just one original processor installed in the CPU A socket. No lights of any kind. (Even if I install an original processor in CPU B, I still occasionall will get a CPU B FAIL light, so I'm thinking I damaged the socket somehow...the light will not be consistent, but it's always the CPU B FAIL light - the light only turns on some of the time (and stays on once lit) - so that's why I pulled the B processor and am simply trying to boot with A alone)
>Do you have a flashing power on light, indicating failed or no memory?
Again, no. I can "make" the light flash by removing the memory riser, but when I re-install the riser, the light stops blinking (with power off during removal/install, of course!)
>Have you done the more severe SMC reset with the reset button OR:
unplug AC power.
Yes. I have used the SMC reset button 3 or 4 times. I unplugged the machine and left it (with coin battery installed) for an hour. The last thing I did last night was that I left it unplugged overnight (with coin battery removed). I have yet to attempt a power on this morning. I will do so and report back.
>
unplug AC power.
Press and hold power-on for a quarter minute to drain the power capacitors.
Re-plug AC power.
wait a quarter minute.
then power on.
>
Haven't done that one yet. (Didnt know about it!). Will try that second today, after attempting the initial boot up after leaving it unplugged all night. (fingers crossed) Of course, the capacitors are likely discharged now after being unplugged and battery-less all night, but you never know...
>Many things have to get synchronized after a CPU swap. It may take a half-dozen reset attempts before everything lines up again and goes.
Thanks for the hope. I will keep trying.
>
I recommmend you remove ALL distractions: all drives, all graphics cards, all PCI cards, all USB devices -- until you get the chime nothing else matters.
Already have done so. Last night I was down to 1 original CPU (CPU A), one memory riser with 1 set of original 1GB DIMMS, 1 bootable HD and nothing else (not even a keyboard/mouse - literally NOTHING else). Will keep trying in this configuration. All I really wanted last night was to hear the "bong" at power on!
Will do a bit more troubleshooting today and will report back.
Thank you!
Richard
Message was edited by: Richard Williams Jr

Mac Pro 2006 won't display anything

Hi
My mac pro won't display anything. I've had a look at this http://support.apple.com/kb/HT1573 and one of the first things I did was reset the PRAM & NVRAM. The 10.6.8 install is fully updated. The startup chime plays and fans run normally.
I have:
re-sat the RAM,
cleaned the RAM
cleaned the inside
removed all the HDDs except the main one
and even used another Raedon 4850 in place of mine.
It starts up in Target-Disk mode fine, I am using it with my iMac now but it is not the same (iMac is only dual core andhas half the RAM) I've tried several screens; DVI, VGA and HDMI all without luck. It's obviouslt out of warranty and I don't want to take it to a Apple store anyway as I ocassionally build & repair computers myself so am fine with trying anything out.
Thanks in advance,
Eric.
Things I could do/ haven't done:
Remove/ replace the Logic Board battery?
test the power I/O?
start in Safe Mode?

Whoa there, sparky !!!
Is there something you aren't mentioning?
Since there has never been a Mac Pro 4850 and you have mentioned this number twice I would like to ask...what aren't you telling us?
Did this computer work fine until one day it quit? Or did you buy/inherit/find it broken or in an unknown state?
Any GPU used in a Mac Pro needs to have EFI on it to do this basic debugging stuff. While PC WIndows BIOS cards can be used if the system is A-OK and gets to desktop, it is basically impossible to use them on a system with issues.
So, if the 4870 has a DVI and a MDP port it is real Apple one and SHOULD work.
If that card died and you have tried replacing it with a WIndows/PC 4850, then you have broken the scientific rule about only changing one thing.
Ideally you would have another Mac Pro to test your GPU in and another KNOWN GOOD GPU to test in your Mac Pro. The EFI thing greatly complicates things, unfortunately. Even a "Mac Pro" video card won't necessarily work if it is for "the other" series of Mac Pro. Ther have been in effect, 2 different Mac Pros as far as video cards go. EFI32 and EFI64. ATI/AMD cards have been largely unaffected by this but Nvidia cards MUST be for right series.

Mac Pro 2006 Kernel Panic

My stock Mac Pro 2006 just started showing the Kernel Panic screen at start-up. First saw the Kernel Panic this afternoon after leaving the system for less than an hour with a game running (EV Nova in a Pause screen). A reboot brought the system back up for a while, I was running Safari for maybe 10-15 minutes when the Kernel Panic screen showed up again.
Tried the three stock Apple-recommended reboot options, reboot with X key down, reboot with Opt key down and PRAM reset and reboot. No luck; the Panic Kernel screen came on after each one. Also tried the original OS X 10.4 install disk during and Opt key reboot; same Kernel Panic.
And 10.5 and 10.6 universal upgrade disks; the 10.6 disk got to the grey screen with the Apple logo and the spinning activity symbol which stopped after a while, the Apple logo went away and no further screen activity; the 10.5 disk actually got to a light blue screen with a cursor, but no other icons, the cursor did change to a text I-bar at certain areas in the center of the screen and the disk drive would spin up after some mouse or keyboard activity, no screen activity and no further progress.
The boot drive appears to be accessible as the OS on it shows up during the Opt key start-up. I also reset the PRAM several times, so do not think that is the problem. Could the battery need replacing or possibly I have a RAM module just go bad on me?
Suggestions? Thanks in advance.
Dave

Update: I have switched out every RAM module (4 X 512 MB) in turn and switched the two riser cards in every combination of one pair of RAM in the top riser card. After each reboot, the kernel panic screen comes back. Could one bad riser card, even if unpopulated and on the bottom cause the kernel panic? Any way to test my system more without swapping parts other than the RAM in and out?

My Mac Pro (2006) has suddenly stopped sending signal to the display monitor.

My Mac Pro (2006) has suddenly stopped sending signal to the display monitor. It coincided with plugging in an Epson printer via usb - while the system was running. Pretty dumb maybe? Could I have damaged the video card? Anyone ideas? Thanks

Howdy Le Batch,
I was looking into the issue you are seeing here, and came across a helpful article for this specific situation. It's named Apple computers: Troubleshooting issues with video on internal or external displays and can be found here:
When using an external display be sure to check the following:
If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
Monitor and Display Adapter Table
About Mini DisplayPort to HDMI adapters
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
If more than one video adapter is in use—or "daisy-chained"—troubleshoot by using only one adapter.
Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).
Reset the system
You can reset the Mac's parameter RAM and SMC.Reset the resolutionStart by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
Start up in Safe Mode.
From the Apple () menu, choose System Preferences.
Choose Displays from the View menu to open the preferences pane.
Select any resolution and refresh rate that your display supports.
Restart your computer.
Regards,
Sterling

Will upgrade to mac pro 2010 give huge improvement from mac pro 2006?

I asked in an earlier post but may not have been clear. Basically, if I upgrade to a new mac pro 2010 quad core 2.8 GHz (12GB ram) will it give me a huge improvement from a mac pro 2006 2.0GHz (with 5GB Ram) and thus reduce the need to render and the time it takes to render? My thoughts are that it will because the graphics card is much more powerful and has more memory and hence any FXplug effects will have better RT playback. Is this a correct assumption?
Or is this too difficult to quantify. Is it simply "You will see an improvement but..."
I mainly edit 1080 25p Pro Res.
Thanks

Further test has astounded me. I installed my copy of Premiere Pro CS4 on the core i3 iMac. I don't use it on my Mac Pro. I only bought it for Encore CS4 (I had an old copy of Premiere from Windows that I used to upgrade).
I copied an avchd card to the iMac desktop. I opened the media in Premiere Pro cs4 and played it back at Highest Quality: it was smooth as butter even with transitions. There were 47 minutes of footage that I added to the timeline and exported out as AIC 1080 50i. This took 2 hours 20 minutes!
I know that this is far from the ideal: ie editing source files from desktop and rendering to the desktop on the system drive (something I would not normally do, but I did not have an FW800 external drive available). I don't like PPro to edit with and was using to compare to my Mac Pro.
The same clips card were on my internal raid 0 on my Mac Pro. I loaded them onto the timeline in Premiere Pro and it struggled at preview quality and the render to an external esata drive was showing in excess of 15 hours!
I am amazed. But this raises questions for me too. The core i3 is a 3.06 GHz cpu (hyperthreading but no turbo boost) and shows as four cores (two real, two virtual) in activity monitor. They were at 310% when playing back the avchd files. If I get the 2.8GHz Mac Pro there will be eight cores and turbo boost. Will this be faster than the core i3 in playing back footage and much faster in rendering? Or does the higher clock speed of the i3 mean that for editing it is better but will lose out to the Nehalem Xeon when rendering?
Translating these finding to an FCP context, might this mean that a rewrap of the avchd to h.264 for editing in FCP is possible? In some cases this might be preferable to transcoding.
I cannot get over how much better the core i3 performance is over the Woodcrest Xeons. This makes me wonder if the Nehalem Xeons are as good if not better?

Mac Pro 2006 worth it?

Someone local to me is selling his Mac Pro 2006. Its a 2 x 2.66 Dual Core with 6 Gigs RAM. No warranty.
I have been reading about this model and that it cannot boot 64 Bit Snow Leopard and Windows Vista/7 64 Bit because the EMI is only 32 bit.
I was planning on adding another 6 gigs to have a total of 12 Gigs and want the system to see all the RAM both in Mac OS and Windows.
The system is 4 years old at this point and don't want to send $1500 for something obsolete but I do love the Mac Pro form factor because of the expandability and don't have $2500+ to buy a new Mac Pro.
Your thoughts? Pro's ? Con's?
Thanks all...

The Specials section is nearly empty, but yes, and I'd expect to see a lot more models, espcially if/when 2010 model is rolled out.
That said, I use my Mac Pro for Windows 7 Pro 64-bit, and while it feels a little more sluggish than what 2009 model would be (I'm using my own custom built PC with "best of class" parts and oc'd processor) it is quiet, decent system still after 3 yrs.
The cost of, and lack of parts, like graphics, RAM etc was one reason I went and built my first PC.
The plus side of that olde Mac Pro is you don't need to jump into Snow Leopard which is still rough around the 64-bit edges of drivers, still runs Tiger if need be as well - latest can be bleeding edge and it can cut both ways.
If you can get a 60 day guarantee and cut the price to $1200 it might be fine. Otherwise, check out used/ref'd iMac line.

Mac Pro 2006, no display, TDM works. Video uploaded. Been to Apple.

Hi,
I have a Mac Pro 2006 and it's ben broken for a little while now. I tried all I could to fix it, reset everything, pressed all reset buttons on Logic Board, changed GPU. But the problem remains. When I start it the mac chimes, as usual and starts up in Target Disk Mode if I hold T (as it's obviously supposed to). The video shows you what happens when I start it up in regards to diagnostic LEDs.
http://youtu.be/jCMPG7Be9WE
Back in the Autumn I took it to an Apple Store. They said it needs a new Logic Board. I don't believe they are correct. If it starts in TDM and starts in alternative boot mode (holding alt key) but does not display anything surely it is a different issue and I shouldn't have to pay for a new LB, which they quoted me £300 ($500US) for?
Can anyone offer any suggestions?
Thank you.

My MacPro 3.1 (QuadCore 2.8 GHZ, 8 GB RAM, ATI X2600, Mac OS X 10.6.1) has the same Problems for some days.
At first I thought it didn't boot up at all, just after several trials....
Then the screen kept blank for several days....
Today I realized that it was booting and kept running until sleeptime.
Via remotelogin I can see a smaller desktop, Aperture tells (my iPhone has new Photos and Aperture is my default for iPhone synching) me the GPU is not supported and SystemProfiler reports that the GPU is not recognized.
I don't know what's happening, I had some graphical faults in the past week (the space for the fast-user-switching-name was blank for a few days and so on, reboots helped)...
Then the disks (booting Leopard from a 2x500GB RAID-0) were just recognized after every 4th to 5th reboot...
Seems to be really a GPU Problem, will try to swap the ATI X 2600 from one slot to another within the next days...

Mac Pro 2006 wont boot up, no video...

Hello... I have a Mac Pro 2006 and yesterday, it froze up and I had hold the power button down in order for it to turn on, since it was unresponsive... Upon trying to restart the Mac, it just hung at the white screen with the apple logo, and I realized I had a Mac installation cd in the drive, so I figured it was trying to load it. I used the eject button on the keyboard, but the dvd wouldnt eject, so I took the side cover off of the Mac Pro, and manually ejected the dvd... Then I tried to reboot the computer. This time when I tried to boot the mac without the OSX installation dvd in the drive, the computer didn't boot up, my monitor wasn't getting any signal, but the fans, drives and everything still sounded like they were running as normal and the dvd drive still ejects manually... I used the diagnostic lights inside the Mac, and the 1st light is showing trickle power, the 2nd and 3rd lights are red immediately after I press the power button, 4th and 5th aren't lit, the 6th is flashing green, and the 7th is a solid green... The 6th light flashes green whether or not my video card is plugged into a pci slot or not... I have tried booting the system without anything connected, drives, mouse, keyboard, anything and I still get the same lights... Please help... I was wondering if it could be too much thermal paste on the cpus or something of that nature...

Make sure your Ram is paired correctly when you install it --
And the long boot time is due to the previous reply. If you don't set a 'boot drive' the mac pro will look everywhere before selecting the OSX installation.
I've got the dual 300GB Velociprators in raid 0 with 80GB Intel ssd boot drive in my mac pro (same as yours). You can also boost your clock speed by a software trick .. I can get mine over 2.9 MHz before errors start popping up in console.
(problem is it screws up video playback and time)
http://www.zdnet.com/blog/apple/overclock-a-mac-pro-or-xserve-in-software/1910?t ag=content;search-results-rivers

Mac pro 2006 dont boot but fan's running like ****.

guys, my mac pro 2006 starts with the fan loud , seems running at total velocity. The video card doesn't show nothing. The usbs dont work. when i extract the video card , the problem is the same. I take the memory too, and the hd . The problem keeps going on.
The fan start's from zero to a million rpms.
The check leds on the motherboard are ok, no one of them are lighting. If i take every part of the machine and i put them outside, the same thing happen.
can you helpme?

Make sure your Ram is paired correctly when you install it --
And the long boot time is due to the previous reply. If you don't set a 'boot drive' the mac pro will look everywhere before selecting the OSX installation.
I've got the dual 300GB Velociprators in raid 0 with 80GB Intel ssd boot drive in my mac pro (same as yours). You can also boost your clock speed by a software trick .. I can get mine over 2.9 MHz before errors start popping up in console.
(problem is it screws up video playback and time)
http://www.zdnet.com/blog/apple/overclock-a-mac-pro-or-xserve-in-software/1910?t ag=content;search-results-rivers

Mac Pro 2006 or Mac Mini 2014?

Hello everyone,
I want to buy a Mac. I have the choice between a used Mac Pro 2006 (8 cores with 2 quad core 2.66ghz, 32gigs of ram, wifi, bluetooth, superdrive, radeon hd4890 for mac, hdd 250gigs. Yosemite installed.) or a brand new Mac Mini (2.6GHz 4th Gen dual-core Intel Core i5 processor with 8GB of RAM and Intel Iris Graphics).
The price for each is 750$.
What would you do?
Thank you!
neuhaus3000

The new Mac Mini is a Joke.
Dual Cores, what is this early 2000's
Geekbench of 6000+
I don't see that paticulary MacPro, but even the original had a Geekbench score of around 6000.
You can check at everymac.com
As for video the ATI Radion hd4890 Seems to be much better
http://www.videocardbenchmark.net/compare.php?cmp[]=42&cmp[]=2692
The only real advantages are USB3,Thunder Bolt2 and size.

MAC PRO 2.66, XT1900 & 3GB RAM for Aperture?

Hi,
I have read a lot of post about the performance of Aperture and CS2 and budget-wise I am thinking in buying a MAC PRO 2.66, XT1900 & 3GB RAM.
Will this configuration be OK to work with Aperture and CS2?
I shoot primary weedings using 8MP Canon RAW files.
Thanks

I have this exact same setup, powering a 24" Dell and a 23" apple monitor - but with 4 gigs of RAM as the previous post suggests. It's awesome (I'm opening 10 mp Nikon NEFs on mine, FWIW).
I initially started with 2 gigs of RAM, and that was miserable in more ways than one. After 4 gigs of RAM, Aperture ran much better...but still not snappy. Following the advice of others in this forum, I got the ATI card you are considering, and it has made a world of difference.
This speed is addicting, however. Now I'm pondering, incredibly, "What ELSE can I add to the mix to make it even FASTER." I've read that some have success with faster drives. Others recommend even more RAM. I might try more RAM down the road, but then again I push the machine in other ways (lots of Rosetta apps, a Parallels instance of XP, etc). Still, nothing really ever feels slow.

How I connect a 27 " Mini DisplayPort Display to a Mac Pro 2006?

Dear All,
I need to know if I can connect a 27" Mini DisplayPort Display to Mac Pro 2006
Thanks a lot in advance
Subalv

You can certainly do that, the Apple Online store sells it for US$150.
http://store.apple.com/us/product/H3938LL/A?fnode=MTY1NDA5OQ&s=topSellers
I have not tested it. It is certainly good to know it exists. I hate paying the premium for "leading edge" equipment, so I am writing from my 2009 Mac Pro with used Apple 30 inch Cimena display.
If I were to pay what that new display costs, I would buy a new display card to drive it directly. My recommendation is to upgrade your diplay card for US$100 more (than the cost of the adapter) and get a card capable of Dual-Link DVI AND two Mini Displayports.

How can I connect older Mac Pro (2006) to my network wirelessly?

I just got a new (2012) MacPro that I can connect wirelessly to my network. I'm moving the old Mac Pro (2006) running OS 10.7.5 that had been connect via ethernet cable to the other end of the house. What do I need to get to connect it wirelessly?
Thanks,
Carmen

Carmen,
Since the Wireless card was optional back then, you may not have gotten it in your original config?
You can verify if the hardware is installed several places, as Bob mentioned, do you have the option to enable wireless under your System Prefs \ Network (I would imagine not, since your asking). However, while very unlikely, it may be installed but your not able to see/select it for some reason?
So, just to make sure, you can also verify via looking under "System Information" (you'll want some info from there anyway).
"Apple Menu : About This Mac : More Info : System Report : Network : (look for Wi-Fi etc.)" if it exist you'll see the card and info about it.
If you don't have the option nor see a card was installed you can go about this a few ways.
1. The absolute easiest route (to NOT have to deal with 3rd party drivers or possible 3rd party issues when you upgrade your OS etc) is check out places like Macsales and see if they have any of the original Air Port extreme cards available and install yourself. - http://eshop.macsales.com/item/Apple/BCM94322MC/
2. You could talk with Macsales and ask which external USB wireless card works best with your rig (least fussy) and go that route. While several brands work just fine, you just never know when something changes in an update and then your faced with the old pointing fingers thing. Rare, but still....
Also, while your in the System Information area you'll want to note your model, if it's 2006, I think that's Mac Pro 1,1 ?
Hope that helps.

Mac pro 2006 won't recognize ram

Similar Messages

Maybe you are looking for