Ofc I tried with both GPUs. I noticed that just after i press the power button a led on the cpu/memory daughterboard blinks, but i found nothing online. It's the one labelled L5I510 in the photo
![led.png]( "led.png")
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MP All Models Mac Pro CPU Compatibility List
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Normal behaviour.
Maybe your problem is a corrupted NVRAM/SPI flash memory failing. The KP report changes the date/time when you re-open?
pleased to report that 64GB of RAM works in a MacPro1,1 without having to flash its firmware to MacPro2,1 firmware
this is something I have been wanting to test for a few years since it was discovered 64GB works with the 2,1 firmware, as I dont actually recall anyone actually tested the 8GB 2Rx4 sticks on a stock MacPro1,1 but for some reason it says in the Wiki on the first post/page that you need the MP2,1 firmware
a friend of mine did test 64GB of RAM in a MacPro1,1 for me a couple years ago when buying the RAM for his MacPro2,1s but he was not able to do in depth testing
but I finally got/found 8 2Rx4 8GB FB-DIMMs for cheap and I am pleased to report they do indeed work in a stock MacPro1,1
View attachment 1712767
curiously older OS X versions like snow leopard will show 64GB in about this mac but only have 32GB usable (have to wonder if its a limit of the 32bit kernel mode SL runs in when running on a MP1,1), OS X El Cap has no problem using all 64GB as demonstrated above
and windows 10 64bit also saw all the RAM http://valid.x86.fr/229gxw
I also own an Xserve1,1 and I hope to test the 64GB of RAM in that machine as well
continuing on from this
im pleased to report the Intel Celeron 445 CPU works in a MacPro1,1, LOL, I had known about this CPU for many years now, and had always been curious if it would work in a Mac Pro, its a weird single Core Socket 771 Celeron, but is based on the same Arch as the Xeons used in the MP1,1/2,1 so I wondered if it would work, well recently I finally got my mits on one and can confirm and indeed it does indeed work, with all 64GB of RAM too, hows that for unbalanced LOL
it shows up as a Core 2 Solo in about this mac, because the MacPro1,1 Firmware does not know what this CPU is, so does not set an appropriate cpu-type number in firmware on boot (which is how OS X's about this mac figures out what CPU name to display)
now normally this would result in an an "Unknown" in about this Mac, exactly like Quad Core CPUs in a MP1,1 on stock firmware, but for the earliest of Core 2 based CPUs about this mac will actually try and guess what the CPU is even without the cpu-type value from the firmware
it is curious that Core 2 Solo is string about this Mac has since no Mac shipped with a Core 2 Solo, as a side note there is also a "Single-Core Intel Xeon" string in about this mac again curious that it is there since no mac shipped with a single core intel Xeon, I wonder if I flash this MacPro1,1 with MacPro2,1 firmware if it will report a Single Core Xeon cpu-type value instead (which I will try at some point) the Core 2 Solo/Single-Core Intel Xeon strings might also be from back in the day when you used to use CHUD tools to disabled CPU cores, which sometimes would change what about this mac would report
heres what windows/CPU-Z etc make of it for those curious
Intel Core 2 @ 1861.72 MHz - CPU-Z VALIDATOR
[an4s5l] Validated Dump by LightBulbFun (2021-01-18 18:01:28) - MB: Apple Computer Inc. Mac-F4208DC8 - RAM: 65536 MB
valid.x86.fr
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looks like I was right on the money, flashed the machine to MacPro2,1 firmware and now indeed a cpu-type is reported and it is the Single-Core Intel Xeon Value
this is on the MacPro1,1 firmware
and this is on the MacPro2,1 firmware
(note the extra cpu-type string, which as above tells About This Mac what to display)and for those curious heres a Geekbench 4 run (done while still on MP1,1 firmware)
MacPro1,1 - Geekbench
Benchmark results for a MacPro1,1 with an Intel(R) Celeron(R) CPU 445 @ 1.86GHz processor.
browser.geekbench.com
A question about cpu upgrade on 7.1 MacPro. I found on ebay two different kind of Xeon for an upgrade of my actual 8 cores cpu. There is an Intel Xeon w-3275m 2.50 GHz 28-Core srffk and same CPU QS version. The price is very different, the QS version costs less (about 1000 EUR). So my question is simple.....are QS version reliable for an upgrade of my actual 8 core cpu? What is the difference with other CPU version?
Who cares at this point when Apple already made obsolete the Mac Pro we loved and still love, to be replaced by a trash can and then in 2019 with an overpriced toaster - and with the end of Intel coming for M1, those who spent 60,000 or less on the 2019 mac pro will be in for a rude awakening when nothing will work on it.
Intel Xeon W-3275 vs Intel Xeon W-3275M - GadgetVersus
Comparison between Intel Xeon W-3275 and Intel Xeon W-3275M with the specifications of the processors, the number of cores, threads, cache memory, also the performance in benchmark platforms such as Geekbench, Passmark, Cinebench or AnTuTu.
What are QS xeons?!?
So I found this ebay listing of a QS xeon, I want to buy two of them, will they work together? Are they unlocked? Will they be recognised by the motherboard? Are they stable? Thanks Ebay listing...
forums.tomshardware.com
You don't want engineering samples.
Lou
interesting, i always thought the difference between M and non-M ist just how much ram can be used,
but it seems the non-M versions are also quite! a bit slower and have only ~65% of the performance?
if that is true an 16-core M might give you almost the same performance as an 28-core non-M (?)
but it seems the non-M versions are also quite! a bit slower and have only ~65% of the performance?
if that is true an 16-core M might give you almost the same performance as an 28-core non-M (?)
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Your X5690 might be bad then. I've been running a single X5680 on my 5,1 with no issues for years.
I guess it's the only explanation now... it seems weird though, it defies my expectations of a not working processor
UPDATE: After putting this same post on the r/Macpro subreddit someone suggested that the spacers at the CPU might not be correct. The original spacers for the heatsink are not allowing the heatsink to apply enough pressure on the CPU to make sufficient contact and that is why it's not booting up??
So did a bit more searching on youtube to see if I can take a better look at other people doing the upgrade and found Brannan Ferguson doing the X5690 upgrade on a 4,1 cMP and he did not re-install the black plastic retaining squares on top of the CPU's, he mentions in the video that if you leave them on it could lead to overheating on the X5690's??
Back to square one for me!! The X5520 quad cores are back in and everything is running perfectly well, but I am none the wiser as to how I am going to get this 4,1 upgraded to a 12 core machine with decent processing power??
This is my 2nd MacRumors post!
Thank you so much to all the dedicated individuals that have provided this information and support.
I have a cMP 4,1 flashed to 5,1 that I bought off eBay with the intention of upgrading it to the max, as per most on this thread and forum.
The specs as I bought it:
2009 cMP 4,1 Flashed to 5,1
Dual 2.26 GHz quad core processors (original)
64 GB of RAM (Will elaborate lower)
Sapphire Pulse RX 580 8GB GPU
480GB SATA SSD
2X640GB HDD
Fenvi T-919 BT/Wifi card in a PCI slot
USB 3.0 PCI card
Running Mojave 10.14.6
I have already done the WiFi/BT Broadcom upgrade and removed the Fenvi card. This makes a huge difference, Airdrop works perfectly but handoff doesn't work for some reason.
Next step was to upgrade the CPU's, I ordered a pair of X5680's from Korea, for a very good price but damaged one of the tiny bypass capacitors on the one CPU during the de-lidding process (photo attached). After much crying I decided to try them anyway and see if they would work.
Nothing, the machine powers on but does not chime or get to the boot screen, just a black screen. The GPU lights up but the fans don't spin. A red LED lights up on the back plane, just below the optical drive, sort of just behind the power button. After holding down the power button to turn it off, but the power cable was still in, this red LED came back on again?? So I pulled the power cable.
So reinstalled my 2.26GHz Quad cores and everything works perfectly fine. No issues.
I then ordered a pair of used, de-lidded X5690's from a person on eBay (yes, I know the risks).
Long story short they do exactly the same thing, power on GPU lights up fans don't spin. No chime, no boot screen, black screen. This time I noticed that there was a small red LED, between the RAM slots and the heat sink of CPU A that came on, I had not noticed that with the X5680's??
So reinstalled my 2.26GHz Quad cores and everything works perfectly fine. No issues.
This is where I am! No idea what to do now?
Model Name: Mac Pro
Model Identifier: MacPro5,1
Processor Name: Quad-Core Intel Xeon
Processor Speed: 2.26 GHz
Number of Processors: 2
Total Number of Cores: 8
L2 Cache (per Core): 256 KB
L3 Cache (per Processor): 8 MB
Hyper-Threading Technology: Enabled
Memory: 64 GB
Boot ROM Version: 144.0.0.0.0
SMC Version (system): 1.39f5
SMC Version (processor tray): 1.39f5
The Ram is a weird one? I have 8X8GB
2X 8GB 2Rx4 PC3L-12800R
6X 8GB 1Rx4 PC3L-12800R 1600MHz
The system recognises all ram sticks and all are running at the 1066MHz of the CPU's.
As seen above it has the latest Boot ROM Version of 144.0.0.0.0
Any ideas?
I know its possible that I bought dud x5690's but the seller on eBay said they would gladly refund me? The x5680's I understand would be dodgy as I damaged the capacitor, but could there be another reason that the system won't recognise these CPU's?
Again thank you to all the wonderful people on this thread and forum for helping numpties like me to work on our old machines!
Attachments
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Over the years there have been a dozen or more posts from 4,1 upgraders who had various problems including failure to POST, red lights, some RAM sticks not working, etc. By far the most common solution was slight adjustments to the torque on the heat sink screws. If they are even slightly off, these problems appear.
I'm sorry I don't have time these days to provide more detailed help, but if you search for those posts you can see that just minor adjustments to the screws fixed their problems.
FWIW, I delidded two x5690 CPUs and installed mine including the original spacers and everything is fine. The whole point of delidding is to have the same physical dimensions for an OEM-like setup. I wouldn't recommend removing or adding anything, other than the CPUs themselves and the thermal paste.
Thank you so much for taking the time to reply and for your original post with all the information on it.
What does failure to POST mean?
POST is "Power On Self Test" which is a hardware check of critical components occurring prior to OS boot-up. Typically on a Mac when the POST is completed, there is the "bong" sound.
So failure to POST indicates that critical hardware didn't pass the test and the computer does not proceed with the rest of the start process.
Compare the delidded xeons with the original xeons. They need to look 100% identical to be perfect. So no fiddling with torque. The spacers secure the sockets. If youre not sure measure them.
I polish the die and cut all of the black seal off and also polish the remains. And just screw the heat sink down as it was a 5.1.
dont do this if the xeon is too thick, you will bent the socket pins.
Knock on wood I got not a single build with problems. And I did quite a few...
I polish the die and cut all of the black seal off and also polish the remains. And just screw the heat sink down as it was a 5.1.
dont do this if the xeon is too thick, you will bent the socket pins.
Knock on wood I got not a single build with problems. And I did quite a few...
So I finally fixed things!!
I now have a pair of X5680 running in my cMP 4,1->5,1 with their IHS still in place.
After they arrived, I thought I am going to test them with their 'Lids' on and just see if I manage to get them to work before I de-lid them.
They worked!!
I know it was risky business doing this without the washers or the thermal pad. I just did the start up and watched the temperatures on TG Pro, then shut it down immediately. I ordered the M4 washers and 5mm Thermal Pad.
Tonight I finished the install by adding two washers to each screw post, this measured marginally less than the difference between the CPU's:
I also removed the original thermal pads that were well squashed and replaced them with a 5mm thick thermal pad.
Put it all back together and as @ActionableMango said above I had an immediate issue with the LED's next to CPU B lighting up. Took it out and slacked off the screws a half a turn each on CPU B heatsink. FIXED!!!
It now works perfectly with lidded CPU's as if it were a 2010 model 5,1.
Having said that does anyone know what the the optimum temperature is for an X5680? Mine currently run in the 60-70 deg C range?
Thanks again to all the posters on this forum for the collective intelligence!
I now have a pair of X5680 running in my cMP 4,1->5,1 with their IHS still in place.
After they arrived, I thought I am going to test them with their 'Lids' on and just see if I manage to get them to work before I de-lid them.
They worked!!
I know it was risky business doing this without the washers or the thermal pad. I just did the start up and watched the temperatures on TG Pro, then shut it down immediately. I ordered the M4 washers and 5mm Thermal Pad.
Tonight I finished the install by adding two washers to each screw post, this measured marginally less than the difference between the CPU's:
- X5520 (original) = 2.63mm
- X5680 with IHS = 4.44mm
I also removed the original thermal pads that were well squashed and replaced them with a 5mm thick thermal pad.
Put it all back together and as @ActionableMango said above I had an immediate issue with the LED's next to CPU B lighting up. Took it out and slacked off the screws a half a turn each on CPU B heatsink. FIXED!!!
It now works perfectly with lidded CPU's as if it were a 2010 model 5,1.
Having said that does anyone know what the the optimum temperature is for an X5680? Mine currently run in the 60-70 deg C range?
Thanks again to all the posters on this forum for the collective intelligence!
congrats on your progress with this CPU upgrade. As far as you temp question, there several threads worth reading with lots of good info such as this recent one where several members (including me) asked for guidance on CPU and NB temps.
i also had similar problems as you did when i upgraded my dual 4,1 with X5680. it took lots of tries to understand what the problem was, and in my case it was the heatsink connectors not making proper contact/locking when screwing the heatsink backl the way i was able to make it work was by breaking the plastic tab that keeps the connectors fixed to the heatsink and the carefully pushing/locking the connectors after the heatsinks where in place. after that everything worked fine, oh btw i did put the plastic spacers back as originally intended. So far i onky have so,e temps issues on one cpu but it should be relatively easy to fix with a tiny tightening or new repaste.
Not even the same socket, W-2295 is a FCLGA2066 Xeon while Mac Pro have a FCLGA3647 CPU socket.
Oh geez, thanks I didn't even see they changed the socket, I didn't know Intel changed the socket in the same family, geez!!!!
It's not just the socket that needs to be the same, but also the quantity of PCIe lanes available. 2019 Mac Pro only works with 64 lanes Xeons.
I have a stupid question. There are quite a few listings on ebay which claim that they are NOT selling ES/QS versions of Xeon processors. Is there any way to tell them apart from "real" ones like serial number, markings, ...?
Hi, I have changed the 2 processors in my Mac Pro 5.1, from the 2 Intel Xeon x5620 at 2.4 GHz, to 2 Intel Xeon x5680 at 3.33 GHz. They work perfectly, what I noticed is that the temperature has risen about 6 ° C on average. Now they are over 50ºC and with the old processors over 40ºC. Is this normal? Is it ok that they are over 50ºC or do I have to put thermal paste on them again? Thank you very much and greetings!
![2x Intel Xeon x5620 2,40 GHz Quad Core.jpg]( "2x Intel Xeon x5620 2,40 GHz Quad Core.jpg")
![2x Intel Xeon x5680 3,33 GHz Six Core.jpg]( "2x Intel Xeon x5680 3,33 GHz Six Core.jpg")
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you have chosen the processors with the highest current consumption (tdp 130w), therefore they will get warmer than the old ones (tdp 80w). your temperature is however not critical.