Micron 16GB 2933MHz NVDIMM-N: $38.99/ea
- Thread starter hmartin
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The market is not that bad if you're looking for RDIMM. To learn, do not forget your PowerGEM and cable with NVDIMM-N.
I could not resist the rash to experiment with exotic-hardware-I-do-not-really-have-a-clear-use-case-for, so I ended up with two 16GB NVDIMM-N 320 MHz, for which I could only source one Agiga9811 power bank and cable.
On a X11SPM motherboard, new NVDIMM related options appear in BIOS. The (single) NVDIMM is counted in total memory but is presented to OS as a drive. I tried creating files in this storage and either rebooting cleanly or cutting power off. With some BIOS options, the storage comes back after reboot—but not always with the last created file. With the wrong options, storage just disappears.
Obviously I need to do more research, but I would not feel confident to rely on it as SLOG. (And I could understand if there were no DDR5 NVDIMM-N…)
No additional BIOS options with X11SRM, X10SDV and A2SDi: Just a small RAM module.
On a X11SPM motherboard, new NVDIMM related options appear in BIOS. The (single) NVDIMM is counted in total memory but is presented to OS as a drive. I tried creating files in this storage and either rebooting cleanly or cutting power off. With some BIOS options, the storage comes back after reboot—but not always with the last created file. With the wrong options, storage just disappears.
Obviously I need to do more research, but I would not feel confident to rely on it as SLOG. (And I could understand if there were no DDR5 NVDIMM-N…)
No additional BIOS options with X11SRM, X10SDV and A2SDi: Just a small RAM module.
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SmartStore (Module) Technologies NVDIMM-N's don't have the 'power brick' with cable like AGIDA etc. They have the power-gem on the module itself and makes them powered by the ram slot itself. This is very convenient and preferable. However, the modules are even rarer and more expansive. Sure, sometimes here and there is a bundle on SALE like 200 US$ for 10x). NVDIMM-N's were never an issue except with Supermicro boards. All our AMD-boards (Gigabyte, TYAN, ASUS) ran NVDIMM-N out-of-the-box.
Hello, in your other posts I've heard about your ES powered optane build and i plan to do an extremely similair thing, as well as trying to use cheap nvdimms as dram for optane. Have you had sucess? Ive been thinking of modifying the SPD for the sticks so they look like normal RDIMM but i'd like to hear if it worked for you and if yes how well.
Er… I let experts comment whether it is even possible to have both NVDIMM-N and NVDIMM-P in the same system, but Optane DCPMM in Memory Mode needs RAM in 1:4 to 1:8 ratio, so "large" 16 GB NVDIMM-N would be barely enough to support the smallest 128 GB Optane.
A quick Google tells me it can boot with anywhere between 1: 4 and 1:16, 1:8 should be fine. For my project ill be using app direct so specifically to me it doesn't matter, but I just wanted to hear if that person found a workaround because as is nvdimms cant be with optane but I find no problem or potential bug with flashing the nvdimm SPD's to make them look like a normal rdimm to the bios, im wondering if thats possible. (Of course, I'll update the checksum)