Here's a stupid question, but adding 2 of these to a MacPro5,1 effectively means 12 cores, right?
| Westmere | 6 core | Dual Xeon | X5690 |
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MP All Models Mac Pro CPU Compatibility List
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Per p117 of 2019_Mac_Pro_Service_Technician_Manual.pdf , https://support.apple.com/en-gb/HT210103 and https://support.apple.com/en-gb/HT210405 , I have a couple of questions regarding the 12 DIMM slots of the Mac Pro 7,1 :
I appreciate that, on the Cascade Lake Xeon W CPUs *without* the 'M' suffix, Apple *officially* supports 768GB RAM, whether that is:
1. 12 x 64GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin LR-DIMM without a heatsink
or
2. 12 x 64GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin R-DIMM without a heatsink
or
3. 6 x 128GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin LR-DIMM without a heatsink
or
4. 6 x 128GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin R-DIMM without a heatsink
but that, per https://everymac.com/systems/apple/...-xeon-w-silver-rack-mountable-2019-specs.html and https://eshop.macsales.com/blog/57013-owc-confirms-1tb-of-memory-in-the-8-12-and-16-core-mac-pro/ , Apple *unofficially* supports 1024GB, whether that is:
5. 8 x 128GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin LR-DIMM without a heatsink
or
6. 8 x 128GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin R-DIMM without a heatsink
and on the Cascade Lake Xeon W CPUs *with* the 'M' suffix, per https://everymac.com/systems/apple/...-xeon-w-silver-rack-mountable-2019-specs.html and https://eshop.macsales.com/shop/memory/owc/apple-mac-pro/2019 , Apple *officially* supports 1536GB RAM, whether that is:
7. 12 x 128GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin LR-DIMM without a heatsink
or
8. 12 x 128GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin R-DIMM without a heatsink
However, to get to 2048GB, is this the *unofficial* configuration?
9. 8 x 256GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin LR-DIMM without a heatsink
or
10. 8 x 256GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin R-DIMM without a heatsink
Presumably, as of macOS 13.2.1 BIOS version 1916.80.2.0.0 Boot ROM MP71.88Z.F000.B00.2212212025 [ https://github.com/acidanthera/OpenCorePkg/blob/master/AppleModels/DataBase/MacPro/MP71.yaml ], the MacPro7,1 does *not* support 2560GB:
11. 10 x 256GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin LR-DIMM without a heatsink
or
12. 10 x 256GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin R-DIMM without a heatsink
nor 3072GB?
13. 12 x 256GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin LR-DIMM without a heatsink
or
14. 12 x 256GB 2933MHz (PC23400) DDR4 ECC full-length 288-pin R-DIMM without a heatsink
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Historically speaking, the officially supported memory configurations tend to just list the maximum that was tested at the time and never get updated.
The only way we’ve known when Mac Pros were capable of more memory are when (A) an enthusiast tries and posts the results, or (B) when a Mac-focused memory retailer such as DMS or OWC posts the information.
The highest I’ve seen from (B) is OWC offering 1.5 TB. If you cannot find anything higher capacity than that, it seems you will need to take on the (A) role yourself. I suggest buying memory from a company with a 100% return guarantee and low/no restocking fee, because there is a high risk that it won’t work.
If you decide to do this, please share your results whether it worked or not. It is helpful to future people who may also want to attempt this.
@dabotsonline
if you read apples specs, it is likely that they use the M cpus for the 24/28 core models, the rest uses the non-M versions. in my opinion this was a ridiculous decision because it almost doubles the price for the cpu even though 99.99% of all users don't even get close to such memory needs. apple simply wanted high numbers to show off and did not care $ about making the top models affordable. (here the W-3275M costs about 8.2k, the W-3275 about 4.8k) the majority of users is wasting almost 4k for a CPU they dont need.
according to intels tech specs 2tb is the max for an M, so supporting 2560gb or 3072gb is impossible.
also apple for sure wouldn't say 1.5tb is max if the top models could support more.
ark.intel.com
if you read apples specs, it is likely that they use the M cpus for the 24/28 core models, the rest uses the non-M versions. in my opinion this was a ridiculous decision because it almost doubles the price for the cpu even though 99.99% of all users don't even get close to such memory needs. apple simply wanted high numbers to show off and did not care $ about making the top models affordable. (here the W-3275M costs about 8.2k, the W-3275 about 4.8k) the majority of users is wasting almost 4k for a CPU they dont need.
according to intels tech specs 2tb is the max for an M, so supporting 2560gb or 3072gb is impossible.
also apple for sure wouldn't say 1.5tb is max if the top models could support more.
Intel® Xeon® W-3275M Processor (38.5M Cache, 2.50 GHz) Product Specifications
Intel® Xeon® W-3275M Processor (38.5M Cache, 2.50 GHz) quick reference guide including specifications, features, pricing, compatibility, design documentation, ordering codes, spec codes and more.
Mac Pro - Technical Specifications
See all the technical specifications for Mac Pro with the M2 Ultra chip.
www.apple.com
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I got a pair of X5675 CPUs for my 4,1 upgraded to 5,1 Mac. I didn't delidd them but I created proper stand offs for the heatsink and got a replacement thermal pad (actually a very thick paste that was made to replace pads).
But the Mac does not chime/boot.
My memory is 8x2GB DDR3 1066 ECC, maybe it needs 1333 memories to be able to startup?
I thought it would startup and play the memory at the lower 1066 speed....
But the Mac does not chime/boot.
My memory is 8x2GB DDR3 1066 ECC, maybe it needs 1333 memories to be able to startup?
I thought it would startup and play the memory at the lower 1066 speed....
No, not DIMM issue. your existing RAM is fine.
My suggestion is do one CPU at a time. In your case, only install CPU A first, leave socket B empty. Then test boot the cMP.
If can boot, then further install CPU B. Otherwise, it's no way to tell which CPU haven't install properly (heatsink screws tension not correct etc).
you should really have delidded them...thats my best guess. i just upgraded and repasted my 2010 dual today..
Thanks!, the problem was 0.5mm difference on the fabricated stand offs I made, after I measured the difference and printed proper thickness stand offs the problem eliminated and all are working correctly (I had 1.7mm thickness and it needed 2.2mm to work correctly)
I managed to make them work without deliding, but today I delidded both my 2 pairs of X5675 I had, and I have tested them and all 4 CPUs are working correctly.
BTW, 1 out of 4 CPUs I got had few missing caps from underside, and I replaced them from one of my old E5520 and now even that X5675 is working correctly, stressed for more than 6 hours without any hiccup.
Reference in wiki post is no longer correct and needs to be updated.
I updated the links.
These 'forum' rules! Or YOUR rules?
I've seen MANY other 'concerns' about delidding and so forth and that's not 'standard practice' is it?
MacRumors attracts a BROAD AUDIENCE of BOTH consumers and professionals interested in the latest technologies and products. We also boast an active community focused on PURCHASING DECISIONS <<<<<and>>>>> technical aspects of the iPhone, iPod, iPad, and Mac platforms.
Again, I'm sorry, but I really don't think I should be?
Jeff
This because of what tsialex said:
Another PM on Macrumors, I found out how to do '4,1/5,1' by myself?
How does one update to 5,1 FW from 4,1? Is it needed for the newer processors?
Another PM on Macrumors, I found out how to do '4,1/5,1' by myself?
ciaran00
macrumors 6502
How does one update to 5,1 FW from 4,1? Is it needed for the newer processors?
yes firmware update is needed for newer processors. but you could easily stay at 4,1 with x55 series and call it a day
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this is wrong, X5675 is Westmere and needs the MP5,1 firmware
to add my 2 cents: Delidding is the way to go for dual 4,1 systems. Too much can go wrong.
Heating up the Xeons, doing the vice method (or a special tool as I have), polishing and removing the silicon remains is a need to make the Xeons identical to the originals.
As other approaches could lead to thicker Xeons and not close contact to the heatsink for the processors and the voltage regulators. This is a risk.
Do it properly or buy perfect prepared Xeons.
Avoid 1st generation MP4,1 dual cpu boards.
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so edit your message, it would lead to a non working machine if one shots too quickly after reading it
yes firmware update is needed for newer processors. but you could easily stay at 4,1 with x5675 and call it a day
I've already flashed to 5,1, and my 2009 MacPro was made in the 26th week, so I 'think' it is past the Rev. A stage, but I haven't checked 'under' the backplane of the 'secondary' dual board I bought for my original single 2.66 4 xeon?
It worked fine at 2 x 4 2.26 ghz xeon's!
But, I already bought 2 x 6 x 5680 xeon's? for a 12 core 2009 with 'similar' performance to a 2019 MacPro!
I'm 'hoping' they are compatible, with the lids ON?
Jeff
Jeff Strong
217-254-8 1 0 1 cell
with the lids on you would need a spacer so you don't over tighten them. its tricky to get it right(so ive heard) i would delidd them, or sell them and buy delidded...you decide whats worth it
You will also need to fiddle with the plug for the temperature sensor and with the thermal pads for the voltage regulators.
Lots of people oversee the latter. The components do not get cooled properly if they do make little to no contact to the heat sinks.
Hi, Please does anyone know a verified CPU vendor to upgrade MP 7.1? I am interested in 16c - 24c CPUs. Thanks.
fyi, i run a 5,1 with an upgraded CPUs for the 4th or 5th yr now. no problem at all.
the only thing tricky was the thermal paste. either i have done that right or there is a lot of tolerance.
(guess the latter)
together with replacing all drives by ssds it was well worth the investment
now things slowly come to an end bc you're stuck with old systems. (max possible is monterey)
the only thing tricky was the thermal paste. either i have done that right or there is a lot of tolerance.
(guess the latter)
together with replacing all drives by ssds it was well worth the investment
now things slowly come to an end bc you're stuck with old systems. (max possible is monterey)
I think at this point if you really need more power you would be better off getting an M2 mac mini and duct taping it to the mac pro ..... (I put dual 5690s in mine and i love it etc but its never gonna beat an M2)
Quite honestly, on my mac(you can see the specs at the bottom signature) i dont need any more power than i already have, im only into audio with protools and alot of plugins and it runs great, i have 2 nvme pcie as well as a universal audio pcie. buying an m2 would require an enclosure which im not willing to do. im truly satisfied with it. Also im using legacy patcher with Sonoma and everything runs fine(surprisingly). I couldnt be any happier with it, not even an m2 will make it better.
ohhh nooo sir, you can go to sonoma with legacy patcher, i have it, runs good, unless your doing video then you must stay on monterey