What DRAM is inside 2023 MacBook Pro 16" with M2Max?

[paulchiu]

I received a 2023 MacBook Pro 16" and under system information, only saw the make and type.
Hynix LPDDR5
No information as to the speed, number of chips, etc.

Does anyone have more details than this?
Also, what programs/apps can test for DRAM speeds in a MacBook Pro running OS Ventura 13.2.1?

Thank you.

 

[dmccloud]

It's soldered on, so you can't exactly go and pick up upgrades for the RAM anyways. Just about every spec for DDR5 I have seen rates the ram in the DDR5-6000 to DDR5-6400 range, so I'd assume the LPDDR5x in the Macs is in that same range. About the only indicator of RAM speeds we have even seen are the max memory bandwidths for the M2 series (100/200/400 GB/s, depending on whether you're running an M2, M2 Pro, or M2 Max).

Update: Looking at Samsung's site for LPDDR5x shows their modules specced to run at 7500 Mbps, which would be faster than the DDR5 used in most desktop machines. I also found something from Sk Hynix itself confirming the same speeds as what Samsung listed...

Meet the Team Behind the Development of the Fastest LPDDR5X

SK hynix has developed LPDDR5X, the world's first-ever mobile DRAM with an integrated HKMG process, which was just recently introduced to the market.

news.skhynix.com

 

[paulchiu]

It's soldered on, so you can't exactly go and pick up upgrades for the RAM anyways. Just about every spec for DDR5 I have seen rates the ram in the DDR5-6000 to DDR5-6400 range, so I'd assume the LPDDR5x in the Macs is in that same range. About the only indicator of RAM speeds we have even seen are the max memory bandwidths for the M2 series (100/200/400 GB/s, depending on whether you're running an M2, M2 Pro, or M2 Max).

Update: Looking at Samsung's site for LPDDR5x shows their modules specced to run at 7500 Mbps, which would be faster than the DDR5 used in most desktop machines.

Any Mac OS apps out there capable of testing just raw RAM speeds?

 

[dmccloud]

Other than some shady apps, it looks like most of the RAM testing apps are Intel-only, so I don't know if they'd even begin to report accurately under Rosetta 2, given the difference in the sensors and underlying system configurations.