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Correct me if I'm wrong because I probably am but this CPU doesn't support Hyperthreading so if only one CPU were running shouldn't it only show one CPU in the activity monitor regardless of it being a dual core ?

No, this Mac is supposed to have 4 physical cores. Activity monitor suggests one xeon is missing.
 
Man oh man...this thread reminds me of my support days for a multinational corp...boy was that ever fun trying to figure out what the heck the person was talking about when there is a massive language barrier.

Me: You're at *facility name*?

User: Yes, yes, *facility name*

Me: Okay where do you sit?

User: *Facility name*.

Me: No, where exactly, what is your cube number??

User:...*facility name*

Me: facepalm.

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No, this Mac is supposed to have 4 physical cores. Activity monitor suggests one xeon is missing.

2 physical CPU's with 2 cores each = 4 cores, correct terminology is probably important.

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Correct me if I'm wrong because I probably am but this CPU doesn't support Hyperthreading so if only one CPU were running shouldn't it only show one CPU in the activity monitor regardless of it being a dual core ?

You are in this case. Those early Mac Pros had 2x dual core Xeons, so it would still show 2 cores as is shown in the pic.
 
Ya I thought so. It is interesting that the user isn't having multiple kernel panics though.
'

Because this hypothetically dead CPU isn't visible for OS, so does not generate errors.

hayatey: what is your native language?
 
What does hat mean? WTH is a "therapist"?

Anyway, a lot of the "About" information is just taken from system text files without actually checking anything.

Try downloading this: http://www.macupdate.com/app/mac/42932/machineprofile and see what it has to say.

Also try opening Activity Monitor again and this time select "CPU Usage" from the "Window" menu ("CPU History" from the same menu will do it too). And see how many cores it represents in the graph.

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2 physical CPU's with 2 cores each = 4 cores, correct terminology is probably important.
That's still 4 physical cores, as opposed to logical cores.

hayatey, so your Mac apparently lost a CPU. Did you say you tried to add new processors (which you called "therapist")? You need to determine whether it's the CPU or the motherboard that is broken. I suppose it's the CPU, but I'm not a specialist. Unless you can investigate that yourself, I would suggest bringing the Mac to an AppleStore or a certified reseller.
 
That's still 4 physical cores, as opposed to logical cores.

hayatey, so your Mac apparently lost a CPU. Did you say you tried to add new processors (which you called "therapist")? You need to determine whether it's the CPU or the motherboard that is broken. I suppose it's the CPU, but I'm not a specialist. Unless you can investigate that yourself, I would suggest bringing the Mac to an AppleStore or a certified reseller.

Maybe by "therapist" he meant "specialist"?
 
The second CPU probably died. If it was the first one, you wouldn't be able to boot. If it was the logic board, you would probably get kernel panics ?
 
In the context, I believe "therapists" may refer to processes or threads of computation.

I would suggest reseating the broken processor if you feel up to it, and while in there, check for obvious damage, and if the reseating of the processor doesn't work, then either it's bad or the motherboard is bad and you'll need to take it to an apple store or a certified technician.
 

The second CPU probably died. If it was the first one, you wouldn't be able to boot. If it was the logic board, you would probably get kernel panics ?


Yup, at this point there is obviously something physically wrong. Either the CPU has died or it's not making proper contact with the socket terminals.

I think you can remove the CPU and heatsink as one piece without needing to reapply any thermal grease. Buy some Acetone or > 90% alcohol, remove the CPUs, clean both contact surfaces thoroughly, and replace them into their sockets.

If that doesn't work now might be a very good time to purchase a set of x5355 processors for $100 or a pair of x5365 processors for $180 to $200. If that seems like a lot for such an old machine you can just replace the one non-functioning CPU for about $25 or so.

Call Apple before you take it to them though. I think they won't touch it - even if you pay. And if they do you will have to pay a lot! I guess quite a lot more than $800. Pretty much whatever is wrong with it at this point you are on your own to repair it.

Don't dismay tho, it's easy. It's just a matter of getting the right parts and following some on-line instructions. I've assembled tinker-toy constructions that were more complex than what you're facing.
 
What about performing an Apple hardware test? Would it be able to tell that one CPU is dead, or will it just believe that the system is equipped with one CPU?
Even though I have the same machine, I admit I don't know how to perform a hardware test on it. :D
 
[...]Call Apple before you take it to them though. I think they won't touch it - even if you pay. And if they do you will have to pay a lot! I guess quite a lot more than $800. Pretty much whatever is wrong with it at this point you are on your own to repair it. [...]

The MacPro 1,1 will be vintage in late June 2013. So, until this date, Apple should still work and repair the MacPro (with an high cost as always...).

What about performing an Apple hardware test? Would it be able to tell that one CPU is dead, or will it just believe that the system is equipped with one CPU?
Even though I have the same machine, I admit I don't know how to perform a hardware test on it. :D

Maybe the ASD could detect the problem as it's at the EFI level and specific to each model. It *should* know that this MacPro has two CPU sockets and try to talk with the second processor. But, it might see the MacPro as a single-CPU machine too. Cost nothing to try :p
 
Correct me if I'm wrong because I probably am but this CPU doesn't support Hyperthreading so if only one CPU were running shouldn't it only show one CPU in the activity monitor regardless of it being a dual core ?

Yeah, it only shows one CPU, that's the point.

His Mac physically has two CPUs, but only one is showing up.
 
The MacPro 1,1 will be vintage in late June 2013. So, until this date, Apple should still work and repair the MacPro (with an high cost as always...).

So I guess it jet depends on the location then. There has already been three cases I have counted here on these forums where the Apple Store refused to service a MP1,1.

The last one was a simple HDD change.

So maybe where you are there's a shop that will still do it till June or whatever.
 
Thank you for all I've tested each processor alone shows me that the base processor has the problem of how do I fix this problem
 
...the base processor has the problem

Buy a x5150 replacement processor from ebay and replace it. Cost is about $30.

Another option is to buy two better processors and replace/upgrade them both.

Your system now: 2 processors, 4 cores, Speed 2.66GHz. (one is broken tho so it shows only 2 cores, 1 proc.)
  • $30 to repair as is: 2 processors, 4 cores, Speed 2.66GHz. (Buy one Processor Xeon X5150)
  • $100 to upgrade as: 2 processors, 8 cores, Speed 2.66GHz. (Buy two Processors Xeon X5355)
  • $200 to upgrade as: 2 processors, 8 cores, Speed 3.00GHz. (Buy two Processors Xeon X5365)
 
I said amazon, not eBay. 2 weeks ago amazon/newegg were selling new 5150 xeons for 10$, now they are at 687$. I never said anything about eBay. They sell used CPUs.
 
To the OP

I have a pair of the 5150's I removed when I upgraded a 1,1

They work perfectly, are clean, and packed in antistatic bags.

I also have Four 512MB sticks of Apple RAM

If you want them, I'll sell it all to you for $50 + Shipping.....

I imagine you are overseas, I am in the US - I would estimate shipping at $25

We could do it via Paypal.... Let me know if you are interested
 
I said amazon, not eBay. 2 weeks ago amazon/newegg were selling new 5150 xeons for 10$, now they are at 687$. I never said anything about eBay. They sell used CPUs.

It was just a 3rd party vendor clearing inventory by pricing it the same as the used pricing for the same product.
 
Except it stayed at very low prices (40$ or less) for almost a year, as the cpubenchmarks link indicates.
 
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