MDD Dual 867MHz CPU Overheating

MDD Dual 867MHz CPU Overheating
I have noted the large number of problems with this particular model and heat issues, but I just received this stripped MDD to do an upgrade on the cheap for my B&W G3 server. In hindsight this might not have been the best unit to upgrade with, but for $72 on ebay (seller was unsure it was dual processor--which may have helped lack of bidding), I figured it was worth it.
After putting RAM to 2GB, putting in an ATI 9200 PCI graphics card, and inserting my HDs from the B&W with updated Tiger installed, everything booted fine with no problems. Dual processors checked out, RAM was fine, and all drives loaded without glitch.
Next go round, after 20-30 minutes it does the sleep/freeze thing everyone has mentioned here and elsewhere. All fans work and have tested with door open and high speed fan directly over heat sink and it still shuts down. Temperature Monitor has it rising above 80c and climbing, which I no longer let go until "closing" to avoid any more damage.
The weird thing about this is that during all of this, the aluminum heat sink remains relatively cool, as if it is not making any contact.
Is it possible it just needs a pad or compound to make contact and dissipate the heat through the sink etc., or does this sound like either a faulty sensor or failing CPU? The compound would be an easy fix (and it sounds logical), but I may just be missing the obvious here. My hope is that the prior owner just did not bother to find out why it did this and cannibalized the unit.
I could take out all the drives, etc. to reduce the heat build up, but I want this to function as a feasible house server that can be left on most of the time + because of the cool heat sink the behavior does not seem to relate to the heat in the housing.
Any and all help will be most welcome.

I think you've nailed it there. Definitely sounds like a poor contact between the CPU and the heat sink.
The sinks do get quite warm, and the CPU seems to low about 52 C, average 59.5 C when busy and top out at 62 C.
It's a great machine, so if you can lay your hands on some thermite glue and effect the repair, you'll be on to a winner. $72, you lucky so-and-so.

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Will a dual 867mhz cpu from a MDD fit in a QS or DA?

Hello all,
Noticing that the dual 867mhz cpu from a Mirror Drive Door Mac runs at 133mhz (rather than 167mhz) prompts me to wonder if it would work in a Quicksilver or Digital Audio Mac? The MDD takes different memory; is that a problem? It looks different; would it even fit?
TIA ..... Jon

No, physically and electrically ( power and data ) incompatible.

Dual 867mhz MDD G4 & Dual 1Ghz G4 Quicksilver: Near Perfect Installation

I installed the family pack on both my desktop G4 towers (Dual 867mhz MDD G4 & Dual 1Ghz G4 Quicksilver) and had almost ZERO problems.
I opted to upgrade my OS X 10.4.10 systems.
Both installations (upgrades) were without a problem, except for one minor keychain glitch:
MDD Dual 867mhz G4: After installation and restart, the keychain seemed to have forgotten my passwords for my POP email and my iChat (AIM) accounts. I simply cleared the keychain (as prompted) and re-entered the passwords (opted to save them) and all is well.
Quicksilver Dual 1ghz G4: No keychain issue. Passwords were retained just fine.
Every piece of email, settings, music, files, folders, apps, etc were all retained just fine on both computers.
All my Adobe CS2 suite apps, MS Apps are just fine.....as does my Final Cut Pro software.
The only software that "broke" was GOOGLE EARTH. I simply just downloaded the latest version and all is well again.
Approx. Install time: 1hr.
Note: If your computer stalls on a blue screen (my computers did this on TIGER install), let them go. More than likely it's "finishing" the installation and probably cataloging the hard drive for Spotlight.
This Leopard OS Rocks! I can't wait til they fine tune it with a 10.5.1 update release

I put Leopard on a Dual 800 and a Dual 400.
Leopard pushes the limits of the 400. The 800 runs pretty well.
I mean it is slower in some places, but I assume that will be fixed in updates.
(for instance... my cursor is sticking to links in firefox and it kills my CPU usage)
Everything else works great.

Selling dual 867 CPU- what's a fair price?

Hey everyone,
I'm looking to put my dual 867 CPU w/heatsink for sale on eBay- what do you think is a fair price? I've had NO issues with it. I just upgraded to a dual 1.6 that's why I'm selling it. Thanks!

A recent G4 Dual 867MHz CPU Board sold for $71.00 plus $13.05 shipping. Another one sold for $76.00 plus $13.05, and another sold for $69.99 plus $14.00 shipping. But one dual 867MHz G4 was listed for $89.99 plus $14.00 did not get any bids. But next week these could sell for higher or less. eBay is kinda tough to pin down values but If it were mine I would put a $75 reserve on it at least.

P/N for Install discs, G4 MDD, Dual 867

Does anyone know the Apple part numbers for the original discs that came with a Power Mac G4 MDD, Dual 867Mhz? or where to get them?
After reading through the postings here I gather they are a MUST have to be able to boot OS9.
If anyone knows of another way please let me know.
Thanks,
Jeff

Hi, Don and Jeff. I made a list a while back that was primarily focused on the part numbers for all the retail (universal) installer CDs. I do have some model-specific discs' part numbers, but not the one for the disc you need, Jeff. Calling Apple may be the best idea. If they're out of that disc and have no record of what its number is (very unlikely, I suspect), try reposting in the PowerMac G4 forums and seeing whether someone who has the same model can supply the number for the disc. Good luck!

MDD dual 1.25 CPU DEAD- WHICH MOTHERBOARDS had COMPATIBLE CPU's?

I've just finished (after much help from Japamac, Grant Bennet and others) diagnosing what's wrong with my MDD.
*FRIED CPU.*
My Logic board is marked 820-1476-A. I found a good used dual 1.25 CPU pulled from a MDD motherboard that's labelled (the motherboard is labelled) 820-1472-A.
ANYONE know if the motherboards are compatible, i.e. if a cpu pulled from that motherboard will run on my motherboard?
If noone knows, any ideas where I could find that info?
From my research so far, some MDD motherboards with nearly similar numbers CAN interchange CPU's, others cannot.
ANY help appreciated, especially now that I've got the issue isolated.
Tom

mddthing wrote:
Have you isolated why the processors fried in the first place?
If its heat I would advise the dual 1.42GHz heatsink and using arctic silver paste...
Ah yes... the question of the millennium. What caused the first snowflake to fall...
The fans are all fine.
Here's the sequence of events:
I was experiencing a series of system corruptions & freezes forcing me to do hard shutdowns when this happened.
The only way to shut down a GUI freeze that I know of is to hard shut down (not good).
The day the full cascade happened, I'd just finished my *8th or 9th hard shutdown.*
I was trying to reboot from another partition on another disk that wasn't corrupted & repair the startup volume.
+*That's when I got a steady pitched tone upon restart. I had no idea what it meant.*+
+*After two more freezes the computer wouldn't startup at all.*+
My insurance would pay only IF I took it to a tech center, and they said "bad power supply, get another computer. It's not worth it."
I did end up get a used G5 but began to attempt a repair... I NEED a MDD for my music interface cards, circa 2000, which after my G5 purchase discovered that none of the cards work. That's my entire music interface; A MOTU 1208 with a 5 volt PCI card required to use it, and and "ADAT edit" card (same era).
The new G4 PSU (and a new power switch) got something happening, but I discovered that one of 2 seagate drives in the "front" cage was dead (only 1 year old).
Long story short, seagate sent me a new drive and, in researching the problem, I learned (*from seagate*) that their PATA barracuda drives run *really really hot.* I had TWO in the front cage, and two "pre-seagate" maxtor drives in the rear "wall cage".
*My estimation is that it WAS a heat problem, in one way or another that caused everything.*
I do music and drive the system pretty hard. There was thermal compound on the processors, but I wasn't the original owner, so I also have no idea if it was applied sufficiently, or how the computer was treated before I got it.
My concern is that the motherboard may have taken a hit as well, since when I first examined the CPU I didn't see the "black dot" I saw after attempting a startup with the new PSU. It *did start once, ran for 5 minutes and that's when I think the CPU shorted.*
Although (with the new PSU), even after that, all the fans run and the red light comes on, just no startup chime. Other than that I have no test equipment. Also running out of money.
I'm probably going to try and get a new processor I saw ($114), use only ONE drive in the front cage, get some ice goop, and hope the motherboard survived. Simply can't swing $250 for a used MDD, so I'm trying the processor swap... first.
I'm also going to find a way to install another small fan in the front cage blowing directly at the heat sink, and cross my fingers... *if I get that far*.
The fans always cycled up and down when needed, so the system WAS recognizing heat conditions.
I'm also thinking of drilling open the "cheese grater fake-holes" and setting the tower up off the floor for better air flow in general.
The heat sinks all seem to have totally different attachment methods.
Mine has 5 screws and uses a Rube Goldberg wiggy looking flange on the front.
+*I didn't know you could swap for the "copper tube" heat sink. I assumed the the 1.47 motherboard had different attachment points.*+
+*This is news to me. CAN I?*+
My sense is that something in the original "cascade failure" caused one of the 2 processors to fail. But I'm just guessing. Can't be sure until I replace it.
+*...God I love being broke...*+

Dual G4 CPU Issue (MDD)

I have a pair of MDD Dual 1.42 GHz FW800 machines.
One uses almost every available CPU cycle when multiplexing an EyeTV file in Toast 7 to burn as a DVD which is the normal and expected result. Both CPUs are "busy" in Activity Monitor. The other machine starts out using a high percentage of CPU cycles for a few seconds and then drops down to something between about 98% and 105% CPU utilization. When viewed in Activity Monitor the utilization switches from one CPU to the other with one taking almost all the load. Multiplexing and burning the DVD takes forever, longer than I remember a single processor machine taking.
I have checked the voltage of the PRAM battery (and then replaced it anyway), and reset the PMU. I have removed the (copper) CPU cooler, cleaned the goop and replaced it. Nothing looked odd. I have run the tests in TechTool Pro and everything passed.
The two machines are running OS 10.5.2. The "problem child" has an ATI Radeon 9800 Pro Video card instead of the NVidia 7800. It has a Pioneer DVR-115 with up-to-date firmware. The "good machine" uses a Pioneer DVR-112 with up-to-date firmware in a FW800 enclosure. Both machines have 2 GB RAM and run off of PCI/SATA controllers.
Any ideas or suggestions?
Edited to add optical drive info.

Hello Hans,
"Are you ready for this?"
I took the "problem child" in to the Apple Store. I told them that I had previously zapped the PRAM and reset the nvram, among other things. I had also removed the heat sink for the CPU, removed the old goop and cleaned things. Visual inspection revealed nothing unusual and so I applied some Artic Silver and put things back together.
The good fellow at the Genius Bar ran the Apple Diagnostics and nothing remarkable appeared. After visiting with the folks in the back room he ran the "Yes test" (in Terminal, "yes > /dev/null") for both processors, which basically runs both processors at 100% of capacity. After doing this for a bit we tried burning a DVD, which the system did in a very normal manner. Then we tried for two-in-a-row, which it did very nicely, thank you very much. I also burned a disc image in Toast that did not appear to be a problem. While all this was going on, "the guys in the back room" had installed Toast 7.1.3 on their machine and observed it "hanging" some, very much like I had described so there appears to be some sort of issue with Toast 7.1.3 and Leopard, even though it may not necessarily appear in all machines, or at least not in the same way. So I am ordering Toast 9. It was time anyway.
I reinstalled the OS 10.5.2 Combo Updater on the "problem child" because it had not had several updates installed as a test as there is a bug of some sort that Apple has introduced with the last batch of updates which prevent reinstalling a Combo Updater as has been the common practice for years when something odd is going on. After doing this, the problem with Toast reappeared and after running the "yes test" for a bit it is again resolved.
Weird, huh?
I can not explain it, though it appears that Toast 7.1.3 is not really Leopard compatible. I am only glad that I have a temporary solution for the problem.
Thanks for your assistance,
Richard

Dual 867MHz Is now Dual 800MHz After Motherboard Replacement?

so i replaced the motherboard on my dual 867MHz G4.
the computer turns on now, and i did a fresh 10.4.11 install...but i noticed that it says "Dual 800" instead of "Dual 867" in my "About This Mac" now. i typed "sysctl hw.cpufrequency" in the terminal and discovered that it is actually running at 800MHz, and not 867MHz.
so why did i lose 67MHz with a new motherboard? it was the correct motherboard...any ideas?

G4 MDD Processor and bus speeds
There are two classes of Processors for the Mirrored Drive Doors G4 Macs, and they do not follow the main distinction between the products -- Firewire 400 Vs. Firewire 800.
In the Mirrored Drive Doors models, processor speed is determined by a combination of the jumpers on the processor modules and the Bus Speed of the system into which the processor is installed.
• Install a processor intended for a faster Bus speed into a system with a slower Bus speed, and it will be clocked slower and run slower than expected. 133/167 slower.
• Install a processor intended for a slower bus speed into a system with a faster Bus speed, and it will be clocked faster -- in most cases so fast that it will immediately crash.
133 MHz Bus speed:
867 MHz dual w 1 MB cache (each processor) from Fw 400 model
1.0 GHz single w 1 MB cache from Fw 800 model
167 MHz Bus speed:
1.0 GHz dual w 1 MB cache (each processor) from Fw 400 model
1.25 GHz dual w 2 MB cache (each processor) from Fw 400 model
1.25 GHz dual w 1 MB cache (each processor) from Fw 800 model
1.42 GHz dual w 2 MB cache (each processor) from Fw 800 model
1.25 GHz single w 1 MB cache from "education only" 2003 model
-compiled from the Power Mac G4 (Mirror/FW800) Service Manual, General Information section.

Recommendations? USB 2.0 & Firewire PCI card for MDD Dual Boot G4 (1.25 Ghz

Can anyone recommend a good USB 2.0 and Firewire combo PCI card? (at least 3 USB 2.0 ports and 2 FW) for my G4 MDD Dual Boot- 1.25 Ghz)?
I have an Orangelink+ Micro USB 2.0/FW PCI card from the days of OS 9- that's supposed to be USB 2.0 under OS X, but isn't (it shows up as max 12/mbps in System Profiler). I'd like to get an external Hard Drive and most of them are USB 2.0 now.
Another question:
Under system profiler, it shows that I have one USB 2.0 port. I'm assuming it's an internal port, because all of the external ports show transfer rates of 12mbps. Is this a correct assumption?
Thanks in advance for any help!

Sorry. Posted in wrong section.
Reposted in "Expanding" section.
Moderator- feel free to delete.

Will a Built-in Modem pulled from a Dual 867mhz work in my DP 500 Mhz Mac

Will a Built-in Modem pulled from a Dual 867mhz work in my DP 500 Mhz (Gigabyte Etherent) Mac?
The info on the modem is:
UO1MO85.00
The connectors are compatible, but I wasn't sure if the modem itself was.
I'm looking to start faxing with my computer which is why I need a modem.
thanks,
Hairfarmer

Hi
Unfortunately I think they may be right. For my internal modem the Apple System Profiler lists a number of regions including the UK. This seems to imply they're region specific and a modem from the US is unlikely to work. I expect the actual hardware is the same, but the firmware contained in the ROM on the modem card is different.
Apple sell an external USB modem for around £35 on the UK on-line Apple Store. It's primarily intended for Mac Minis which no longer ship with an internal modem, although it may work on other computers with the appropriate OS version number.

ATI X800 XT 512MB on MDD dual boot dual 1.25Ghz.... possible?

Hi,
Just looking to see if I can install a Mac version of the ATI X800 XT 512MB on G4 MDD dual boot dual 1.25Ghz machine?
If so... great... I'll go pick it up straight away.
thanks
PS. I know it won't accelerate 9.2.2, but I already have the 9200 PCI card to accomodate that.

Just following up on japamac's excellent response.
ADC presents a seriously limitation on cards since the only two retail cards (no flashing, no fuss) on the market are the ATI 9600 and 9800, both without ADC.
I use a modified 9600 Pro from a G5, which has an unpowered ADC. Unpowered because the the ADC tab doesn't align, although some people have modified the card further to get power to the ADC port. For info on both of those mods, see:
http://www.pistolerapost2.com/viewing/96002g4.html
There is one last card -- extremely -- I can think of with ADC and more oomph than the retail 9600: the Apple OEM 9700. That was a BTO option for the MDD. Here's some info on that card:
http://www.xlr8yourmac.com/Graphics/Radeon9700PROOEM/index.html
Again it's really rare because it wasn't available even as a BTO option for very long. They fetch a premium on the used market when you find them.
What ADC monitor do you have? I hope an LCD. In which case, something to consider is the Apple ADC-DVI adapter which will set you back $100. It's basically a kind of splitter, with a brink supplying power to ADC monitor while passing the signal from the DVI port. Yeah this adds to your costs, but gives you more options in terms of cards.
Oh more thing about 9.x acceleration which you mentioned. With ATI cards, you might need to pull an extension or library from the Extensions folder to keep 9.x from stalling at boot. I had to do that with my 9600. Sorry, I'm on my MBP now, so I can't tell you which ones. Let me know if you need/want to know which ones I pulled.

For virtualization, what processor can replace Pentium(R) Dual-Core CPU T4500 of Compaq 620?

Dear HP community,
I bought a Compaq 620 Energy Star notebook 3 years ago, and its processor is Pentium(R) Dual-Core CPU T4500, but without virtualization feature. For supporting virtualization etc features, can you recommend a suitable processor to replace it without replacing the other components, and the notebook still perform as well as before? Moreover, what tools are required to replace the processor?
Thank you very much for your help !

i did some research, it looks like that the compaq 620 energy star notebook can be upgraded to have virtualization feature by only replace the CPU (support virtualization), without replaceing any other components, e.g. the motherboard. it is much appreciated if anyone can help to confirm this.
moreover, it is said that it is not good to replace the component like CPU of a notebook, because some of the notebook components are soldered to the motherboard, but i'm thinking this doesn't mean the notebook components can't be replaced. with the right tools, the right apporaches and with caution, the notebook components, like the CPU, can be replaced. it is much appreciated if any one can help to confirm this as well.
if only upgrade the CPU (with virtualization feature) which is supported by the current motherboard (compaq 620 energy star), can the whole notebook system support virtualization technology (including motherboard, BIOS, CPU etc)?
please do help to answer the above questions, and give me the firmed advice on upgrading the whole system to enable virtualization feature. i don't have enough budget to purchase the new computer system, so perfer to upgrade.
thank you very much for your help in deed !

PowerMac G4 MDD Dual 1.42 not recognizing hard drives

I have a PowerMac G4 MDD Dual 1.42 GHz, and I just moved across country, and it was working before the move, now it won't start up. It goes right to a grey screen with a blinking question mark and finder icon. I have 2 hard drives in it. One with Leopard, and the other with Tiger, and it won't recognize either. I reset the PRAM, I checked all the connections inside, started it up holding the option key and it doesn't show either hard drive. I also started it up with the Leopard install disc and using Disk Utility it still couldn't find the drives! Next thing I am going to try is resetting the PMU and see if that works...otherwise both hard drives went bad or possibly the cable for both of them went bad??

operati0n69er wrote:
... I checked all the connections inside...
When you checked the cable connections, did you check both ends of all cables? For example, if the moving loosened the ATA cable at the logicboard/controller end, checking the drives' connectors won't reveal much.
Do the drives spin up when you power the machine on (you may need to open the side panel and gently touch the drives while booting to test this)? If not, suspect a power cable connection issue. If they do, suspect an ATA cable connection issue.
Best way to confirm a cable connection is sound is to undo it and redo it - they can look okay when they are not okay. Do this with the machine shut down, of course.

/proc/cpuinfo shows only 1 core on dual-core CPU [SOLVED]

I've recently gone from Arch i686 to Arch x86_64, and now /proc/cpuinfo shows only one core even though it's a dual-core CPU.
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz
stepping : 6
cpu MHz : 2266.542
cache size : 3072 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc up arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips : 4534.96
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
Have anyone experienced similar problems on x86_64?
Could it possibly be a kernel related error?
/AcId
Last edited by AcId (2010-09-08 21:33:27)

dmesg shows some iterensting info about "Unsupported number of siblings" ?
dmesg | grep CPU:
SMP: Allowing 1 CPUs, 0 hotplug CPUs
setup_percpu: NR_CPUS:16 nr_cpumask_bits:16 nr_cpu_ids:1 nr_node_ids:1
PERCPU: Embedded 29 pages/cpu @ffff880001800000 s88832 r8192 d21760 u2097152
SLUB: Genslabs=13, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
RCU-based detection of stalled CPUs is disabled.
Verbose stalled-CPUs detection is disabled.
CPU: Unsupported number of siblings 2
mce: CPU supports 6 MCE banks
CPU0: Thermal monitoring enabled (TM2)
weird, boot CPU (#0) not listed by the BIOS.
Brought up 1 CPUs

Convert from a 15 pin to work on a G4 MDD Dual Processor

I just purchased a Powermac G4 MDD Dual Processor. I have an Acer AL1916WAB monitor. The monitor is a 15 pin. What do I need to purchase to connect it to the G4? I haven't a clue.
All help is appreciated.

I found my answer with a little research and I'm set! So I don't need help after all lol!

MDD Dual 867MHz CPU Overheating

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