Genesys Zu-3EG Upgradable DDR4 limit

[rappysaha]

Hello,

How much DDR4 can I connect in Genesys Zu -3EG board? Is there any limit?

Thank you

[elodg]

The Genesys ZU was validated with a 16GB 2Rx8 ECC module (SQR-SD4I16G2K4SEBB).

The PS DDR4 controller is limited to 34GB, so theoretically a sixteen-component 2Rx8 module (32GB) would also work. Keep in mind that dual-rank components max out at a one step lower data rate (1600-3EG; 1866-5EV).

Edited April 26, 2021 by elodg

[rappysaha]

Hello @elodg,

Thank you for the reply. I have another questions. According to the Datasheet of Genesys Zu-3EG,

"The Mini PCIe connector J13 doubles as an mSATA slot allowing fast non-volatile SSD storage. "

If I connect an SSD via J13 connector,

- By enabling, PCIe from MPSoc, what is the max read and write speed possible?

- By enabling, SATA from MPSoc, what is the max read and write speed possible?

I know speed will depend types of SSD. But is there any lab tested speed for any specific model?

 

-Rappy

 

[elodg]

I added the maximum theoretical data rates for SATA (600MB/s) and PCIe (500MB/s) to the reference manual. I do not have benchmarks at the moment, but I recommend mSATA. Good mSATA modules should bench at least 200MB/s read speed.