May I know if going to install 64GB RAM on QNAP TS-h973AX will it able to see 64GB RAM installed? as I watched your video (64GB, 32GB and ECC memory in the QNAP TS-873A NAS – Memory Upgrade Test) TS873A and TS-h973AX are using same CPU.
Yes, the limit is always based on a CPU, not the NAS model.
So in this video, we tested Kingston 32GB memory which worked and also could be used in virtual machines.
Kingston 32GB memory kcp426sd8/32 DDR4 2666MHZ: USA UK
Samsung 32GB (no tested but should also work) USA UK
Yes, you can upgrade this NAS with ECC memory. This will require removing the existing non-ECC module. But this is the right thing to do if you want a more reliable system. Not only ZFS files system can benefit from this, but any other file system too. Very useful for things like VMs, web servers etc.
Here is a list of Qnap ECC RAM:
RAM-16GDR4ECT0-SO-2666
RAM-8GDR4ECT0-SO-2666
ECC alternatives:
not tested on our side
Kingston Server Premier KSM26SED8/16HD Memory 16GB 2666MHz DDR4 ECC CL19 SODIMM 2Rx8 Hynix D
UK https://amzn.to/3iMvacC
USA https://amzn.to/3zFkG5H
Here is official list
 RAM-16GDR4ECT0-SO-2666 |
DDR type: DDR4(260PIN)
Capacity: 16GB Spec: 1G X 8 Frequency: DDR4-2666 Form(PIN): 260PIN with ECC Supported: ECC Power Supply: 1.2V Dram Organization: 2048M*72 Temperature: 0℃~85℃ Environmental Regulation: RoHS |
 RAM-16GDR4T0-SO-2666 |
DDR type: DDR4(260PIN)
Capacity: 16GB Spec: 1G X 8 Frequency: DDR4-2666 Form(PIN): 260PIN Power Supply: 1.2V Dram Organization: 1024M*64 Temperature: 0℃~85℃ Environmental Regulation: RoHS |
 RAM-32GDR4ECP0-SO-2666 |
DDR type: DDR4(260PIN)
Capacity: 32GB Spec: 2G X 8 Frequency: DDR4-2666 Form(PIN): 260PIN with ECC Supported: ECC Power Supply: 1.2V Dram Organization: 4G*72 Temperature: 0℃~85℃ Environmental Regulation: Halogen Free |
 RAM-32GDR4T0-SO-2666 |
DDR type: DDR4(260PIN)
Capacity: 32GB Spec: 2G X 8 Frequency: DDR4-2666 Form(PIN): 260PIN Power Supply: 1.2V Dram Organization: 4G*64 Temperature: 0℃~85℃ Environmental Regulation: RoHS |
 RAM-4GDR4T1-SO-2666 |
DDR type: DDR4(260PIN)
Capacity: 4GB Spec: 512M X 8 Frequency: TS512MSH64V6H Form(PIN): DDR4-2666 with ECC Supported: 260PIN Dram Organization: 1.2V Temperature: 512M*64 |
 RAM-8GDR4ECT0-SO-2666 |
DDR type: DDR4(260PIN)
Capacity: 8GB Spec: 1G X 8 Frequency: DDR4-2666 Form(PIN): 260PIN with ECC Supported: ECC Power Supply: 1.2V Dram Organization: 1024M*72 Temperature: 0℃~85℃ Environmental Regulation: RoHS |
 RAM-8GDR4T0-SO-2666 |
DDR type: DDR4(260PIN)
Capacity: 8GB Spec: 1G X 8 Frequency: DDR4-2666 Form(PIN): 260PIN Power Supply: 1.2V Dram Organization: 1024M*64 Temperature: 0℃~85℃ Environmental Regulation: RoHS |
Potential alternative for 32GB ECC RAM – not tested
Samsung 32GB DDR4 PC4-21300 2666Mhz 260-pin SODIMM ECC Unbuffered Memory RAM
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