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MP 7,1 Which LRDIMM 2933 64GB RAM for 2019 Mac Pro - Samsung vs Micron vs Hynix?
- Thread starter paulchiu
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Make Robert De Niro look 20 again needs all the RAM in the world. LOL
Note that no memory testing program that runs under an operating system can thoroughly test memory. Use the BIOS level testing, or boot memtest86 from a USB thumb drive.
If you install Windows, it will install a UEFI memory test that you can run.
Yes,
will be installing Parallels Desktop and Win 10 for some business work stuff. will look for that UEFI
I have a thought . Why not install Windows 10 in your MP7,1 and then run the Windows version of Memtest on the whole configuration ? It shouldn't matter what OS is used , only that the modules are verified to be good .
The only wildcard is exactly how long the test would take .
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That's true and running the single user command line version of a memory test will produce more accurate results . And that might be the way Memtest for Mac will run with modern Systems .
In the old days , I used to do precisely that but discovered it would not permit , of course , me to perform a System load test ( where all major components are placed under concurrent and continuous loads . Sort of a Super Test to shake out any defects in a Build .
But we're still back to the wildcard ... How long will the test take to completion ? The OP needs his Mac for production reasons .
Not just to run tests all day for the MacRumorati
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Hello,
Just wanted to share another option:
I'm expecting my Mac Pro and 6 of these modules to arrive tomorrow. From what I can tell, these are rebranded Samsung modules, but less expensive.
Just wanted to share another option:
SuperMicro (M393A8G40MB2-CVF) 64GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory Model MEM-DR464L-SL01-ER29 - Newegg.com
Buy SuperMicro (M393A8G40MB2-CVF) 64GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory Model MEM-DR464L-SL01-ER29 with fast shipping and top-rated customer service. Once you know, you Newegg!
www.newegg.com
I'm expecting my Mac Pro and 6 of these modules to arrive tomorrow. From what I can tell, these are rebranded Samsung modules, but less expensive.
Hello,
Just wanted to share another option:
SuperMicro (M393A8G40MB2-CVF) 64GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory Model MEM-DR464L-SL01-ER29 - Newegg.com
Buy SuperMicro (M393A8G40MB2-CVF) 64GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory Model MEM-DR464L-SL01-ER29 with fast shipping and top-rated customer service. Once you know, you Newegg!www.newegg.com
I'm expecting my Mac Pro and 6 of these modules to arrive tomorrow. From what I can tell, these are rebranded Samsung modules, but less expensive.
Supermicro's list of qualified memory modules for a similar system is a very good source of info .
Hello,
Just wanted to share another option:
SuperMicro (M393A8G40MB2-CVF) 64GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory Model MEM-DR464L-SL01-ER29 - Newegg.com
Buy SuperMicro (M393A8G40MB2-CVF) 64GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory Model MEM-DR464L-SL01-ER29 with fast shipping and top-rated customer service. Once you know, you Newegg!www.newegg.com
I'm expecting my Mac Pro and 6 of these modules to arrive tomorrow. From what I can tell, these are rebranded Samsung modules, but less expensive.
They charge sales tax to New York State, still cheaper than Memory 4 less and OWC
I was ready to buy Nemix RAM from Amazon, but I noticed that the seller began steadily raising the price from mid-December until now. The 64 GB (2 x 32 GB DIMMs) kit was $192 less than a month ago, but the seller has now raised the price to almost $300! That's what prompted me to get the Supermicro option mentioned above from NewEgg. It wasn't $192, but it was still much cheaper for a single 64 GB DIMM.
Nemix was mentioned by Youtube stars since December 2019 but their prices skyrocketed too much for 32GB, 64GB and up. I could not find out who makes the chips; whether Hynix, Samsung, Micron, etc.
In the end, I bought Samsung from the cheapest out there and that was memory.net
Wow, I didn't expect they will raise the price.
Yeah, Nemix is mentioned anywhere by blogger (Macrumors), vblogger.
Mine is arriving tomorrow but I still haven't got the RAM yet. I'm thinking if the MP7.1 will work with 1 stick of 128GB RAM
The Nemix RAM I purchased is made by Samsung. Part number is M393A4K40CB2-CVF for all of my 32GB modules.
No. From Apple Support document:
"Other configurations of 1, 2, and 3 DIMMs are for diagnostic use only."
Update .
I was able to run Memtest for Mac on my MP7,1 using macOS 10.15.3 Beta Catalina .
However , only 22 GB are able to be tested out of a System total of 32 GB .
Hardly ideal .
I will run the test in single user command line mode later to see if I can get a greater amount of installed memory tested .
I was able to run Memtest for Mac on my MP7,1 using macOS 10.15.3 Beta Catalina .
However , only 22 GB are able to be tested out of a System total of 32 GB .
Hardly ideal .
I will run the test in single user command line mode later to see if I can get a greater amount of installed memory tested .
You'll never come close to 100% with the Apple OSX running.
When memtest86 is run from a thumb drive, it has a very small footprint.
Not only that, it will move the test kernel into already tested memory, and then test where the kernel was initially loaded.
Yay!
MacPro arrived and my back is killing me already.
Looking for an all nighter to test and populate this BEAUTIFUL BEAST!
Pro Display XDR still Feb 17
MacPro arrived and my back is killing me already.
Looking for an all nighter to test and populate this BEAUTIFUL BEAST!
Pro Display XDR still Feb 17
Thanks for the clarification. At first, I was thinking to purchase 1 x 128GB first and expand it in the future.
OK, running Mac Pro for a few hours now.
With base 32GB RAM
1. Geekbench 1179 17,578
2. Cinebench 9885
With 768GB RAM
1. GeekBench 1177 20,708
2. Cinebench 9928
With base 32GB RAM
1. Geekbench 1179 17,578
2. Cinebench 9885
With 768GB RAM
1. GeekBench 1177 20,708
2. Cinebench 9928
You're absolutely right . But I needed to verify that memtest86 would actually work without any issues on a MP7,1 . Guess what ? It works fine . I was able to install that program onto an USB thumb drive and run a test with an Option command at start up to access the Startup Manager . It took a long time to boot . Some 5 to 10 minutes . And it took around 10 hours to test 32GB ( 4 x 8GB ) of memory using four passes with all individual test components selected . That's a long time ! But the memory passed inspection . Maybe I should use a faster USB drive - I can always make a flash SSD USB thumb drive if I need to . Something with a real seriously fast drive controller . Heavy on the IOPS and maybe 500 MB/s throughput . The cheap $5 USB thumb drive I used this time was probably a punishment ... BTW , I was able to test 31.9 GB out of 32.0 GB doing this .
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Thanks for this. I am not venturing into testing my 768GB RAM cluster as it would take weeks to complete. So far, my system has been running continuously for 3 days. No fan noise at all even at times with all cores working.
The test will probably be much quicker with a faster USB thumb drive . I'll be building one soon for my shop , because my current test drive is just horribly slow . But the method is solid and I appreciate getting results using the only working memory test for Catalina ( except whatever Apple has with GSX , which the average user will never have direct access to ) .
Price has gone up to $314 so for 12 you would have to pay $312 more!!!