I struggled with this for the last two weeks and I'm quite certain Apple security is behind the upgrade block .A pity, but thank you so much for testing AND sharing your results!
Thanks for trying some crazy mad science!👨💻I struggled with this for the last two weeks and I'm quite certain Apple security is behind the upgrade block .
Never got to the point I was concerned about it ! I was more concerned with the processor upgrade surviving more mundane operations . Funny thing about this upgrade was that it was stable and fairly high performance for as long as I wanted , until the NVRAM reset thing . But I will say something about the Gold 6212U - she's a really nice piece of silicon in an UP Cascade Lake Quad 300 W GPU rendering array PC !Thanks for trying some crazy mad science!👨💻
Did the pci lane difference on the gold Xeon (48 vs the W range’s 64) show up at all in the pci slot/pool balance uni?
likely works , but not verified .Does anyone know if a W-3275 (non M) works? That's the upgrade that saves money right now. Apple offering only the large memory versions of the 24 and 28 core chips adds a $3000+ premium to those configurations that doesn't need to be there.
The safest processor upgrade method for laypeople is to do a complete system tear down via iFixit instructional , unless you can find a method to only remove both the heatsink standoff plates . I tried on my MP7,1 and there was too much Loctite on the fastener threads . All I got was this scary squeaking noise like I was stripping something , so I aborted the process . I had no desire to be the first person in history to strip a torx fastener .Well well. As it happened I just ordered Xeon 3265 24 core (non M) model to replace 3245 16 core cpu in my Mac Pro 7,1 but obviously after reading comments about the possibility of damaging the motherboard etc. ..tbh I'm not sure If I should continue with the installation or wait until some proper instruction guides pop up...
The safest processor upgrade method for laypeople is to do a complete system tear down via iFixit instructional , unless you can find a method to only remove both the heatsink standoff plates . I tried on my MP7,1 and there was too much Loctite on the fastener threads . All I got was this scary squeaking noise like I was stripping something , so I aborted the process . I had no desire to be the first person in history to strip a torx fastener .
I hope you have better success . Use a T handle T8 driver for the four HS standoff plate fasteners and a T handle T15 driver for the two CPU heatsink fasteners . Important : the heavy and large heatsink fasteners are not retained and will fall out of the heatsink if you do not keep the heatsink level . Do not attempt to use straight handle drivers for either fastener type , as you need the sufficient torque a T handle will provide .
In order to deal with that issue , I developed a processor removal and installation method suitable for technicians . There is still a high level of risk of damaging the socket and I'm still debating whether to make the method public . But its safer than finger installation .
Since I personally believe in the free flow of information , I told two high profile individuals in the Mac community the method ( with a pictorial based instructional ) and embargoed public release of the method pending developments . I'm not real eager to encourage someone to fry an eight thousand dollar processor and a thousand dollar logic board .
Three of the pins on the LGA3647 socket of my own MP7,1 were slightly bent from all the attempts I have made so far . The bent pins have not done any harm as far as I can tell , but I am more than annoyed since I always examine processor socket pin arrays with a flashlight beamed from several directions before proceeding . The bent pins are not serious enough to straighten . I have 40 years of experience with straightening interface pin arrays all the way from the simple 40 pin 6502 chip ( 1980s ) to the current super complex 3,647 pin LGA3647 chip . But I'm ashamed that there was any damage at all , folks , as I have installed over a thousand processors in my career . I have some pretty strict shop protocols . I really wish Apple had used a PHM in the MP7,1 , then we wouldn't be having issues with finger installs .
I have performed a total of eight successful removals and installations with this individual socket and the manufacturer , TE Connectivity , says the socket is good for 30 cycles ( installations ) before it wears out . So , I can't continue to test forever with this particular Mac . For the time being , I'm done experimenting . The factory 8 Core chip is back in the MP7,1 and my Gold 6212U is back in Blackbird - my high performance UP Cascade Lake four 300W compute GPU rendering PC .
At any rate , I hope someone ( Alex , are you listening ? ) can figure out how to get Skylake and all the other Cascade Lake processors compatible with the MP7,1 . Right now , we're restricted to the W Xeons .
Thx for you detailed setup experience! would you care to share the instructions via email ?3265/3275 Works perfectly fine.
Nice! How did your cpu / heatsink removing and re-installation go ? was there any bent pins ? Do you have any thoughts regarding this procedure to share with us ?3265/3275 Works perfectly fine.
Because we don't know exactly why the NVRAM reset broke the Mac Pro with the 6212U and there's no guarantee this won't happen in production. And IF it happens, you have to...why wouldn’t we take advantage of the huge cost/benefit advantage of a CPU like the 6212U?
Thank you!Because we don't know exactly why the NVRAM reset broke the Mac Pro with the 6212U and there's no guarantee this won't happen in production. And IF it happens, you have to...
Even in the best case, that's considerable downtime and uncertainty.
- Recognize the problem (which is next to impossible if you're not the one reading this thread)
- Swap the CPU for a compatible model, which hopefully is available right away
Of course, if you don't mind that, nobody's preventing you from sticking a 6212U into your Mac Pro. But in that scenario, a Hackintosh might be an even more attractive way to get this level (or even higher) of performance.
I have a feeling the whole Xeon SP CPU issue
is because when you do a PRAM reset, you reset everything including low level memory training and other such things
that when you do a CPU swap are still in place from when the old CPU was installed
but when you reset the NVRAM it clears all that and perhaps one of those low level bring ups is not compatible with the Xeon SP CPU
(it may even be some sort of platform compatibility check that gets ignored until you do a PRAM reset at which point the system goes Oi this CPU is not for this platform!)
what diagnostic LEDs light up on the logic board when its NOT posting?
but they are different CPU still for technically different platforms
a good example of this is the LGA1151 Xeon E CPUs dont (normally) work in Consumer Core ix Motherboards despite being the same socket and same CPUID etc
(the only thing that blocks them from working is the intel Management engine and if you can get round that then you can boot them on consumer mobos)
also from what i have been told, the MacPro7,1 does have 4 diagnostic LEDs,
1 is standby power, first power regulator, and T2 is powered
2 is all power regulators active, and CPU is powered to startup
3 is memory setup complete
4 is EFI completed startup and passed startup to the operating system wherever it is
it is also worth keeping in mind the Xeon SP CPUs only have 48 lanes where as the Xeon W CPUs have 64 lanes
it could be something as simple as the previous config from the Xeon W is forcing all 64 lanes on the Xeon SP CPU then you PRAM reset it gets set back to 48 lanes but 48 lanes may mean something important is no longer connected so the machine no longer POSTS
and it could even be something to do with your specific Model of CPU (I know its a gold CPU but specifically a single CPU only one, it would be interesting to try a non U CPU)
How is not supporting CPUs that don’t work for the system “doing everything in their power”? There’s no evidence they’re blocking -W CPUs they don’t sell.Sounds to me a lot like Apple are doing everything in their power to stop the upgrade of the CPU. have they spent so much time on making sure it’s expandable under their own parameters?
How do they manage to make the system work reliably when it is designed for 64 lanes and the CPU can only provide 48?Sounds to me a lot like Apple are doing everything in their power to stop the upgrade of the CPU. have they spent so much time on making sure it’s expandable under their own parameters?
This has nothing to do with Apple blocking anything since 2019 Mac Pro needs a Xeon processor with 64 lanes.Sounds to me a lot like Apple are doing everything in their power to stop the upgrade of the CPU. have they spent so much time on making sure it’s expandable under their own parameters?
Not really . The Gold 6212U I tested had a compatible CPUID ( as we found out later , but I deduced this at first ) and Stepping version ( which I knew from day one , which is critically important ) in the firmware ; two things very much in its favor .Yeah thats a bit unfair. I am stunned that a non-W CPU even booted.
Why climb only half way up Mt. Everest ? 🤔 Someday , I'm gonna test 2TB in one of these rigs ...Why are you buying the M?? the non-M works just as well. are you planning to add more than 768GB of RAM? :O