128 GB of RAM in new Mac Pro late 2013

[misanthrophy]

a couple things worth mentioning is that the memory stick is an LRDIMM

I know that Westmere supports LR-DIMMs but I dont know if the MP5,1 supports LR-DIMMs

as for the 5 32GB sticks thing, that was because the guy only had 5 sticks on hand IIRC (he tried some 16GB sticks which caused a kernel panic but I think that was due to issues on mixing un matched memory sticks)

it would be very interesting to gather up a number of diffrent LRDIMMs and try them out in a Westmere-EP MacPro5,1 (and a Westmere-WS MP5,1 once EP testing was done)

At the end it is just a matter of time and money. I for myself can not test that "just for fun" as these sticks are pretty expensive...
Does anyone know someone from a company who works for Samsung etc who could sponsor this project?

 

[LightBulbFun]

we had a couple MP5,1 owners who said they worked at computer recycling places with access to some high capacity DIMMs

sadly however it seems they went quiet on us...

 

[VaZ]

Theoretical memory limit has been breached!

So far I have 160gb of ram, I think it can go further.

At 160gb using 5 sticks of 32gb I tried adding an additional 32gb using two 16gb sticks and I got a kernel panic.

However when using just 32gb the system it works perfectly.

I attached a screenshot of it showing as 160gb of ram.

So at least we know for sure it goes above 128gb, it doesn't seem to recognize my 6th stick that should put it

at 192gb.

Anywhoodles, any thoughts?

Yes try with Mojave and the new 140.0.0.0 bootrom ! It may have better support.

 

[eksu]

I'm finally upgrading my dual tray 5,1 from 3x4gb dimms. It seems like we could test if the 5,1 supports LR-DIMMS buy purchasing a single LR-DIMM module.

I'm hunting for cheap 6x32GB options to test, but won't buy any unless I find something with a lower price/gb than 16gb dimms on the market right now.

 

[h9826790]

I'm finally upgrading my dual tray 5,1 from 3x4gb dimms. It seems like we could test if the 5,1 supports LR-DIMMS buy purchasing a single LR-DIMM module.

I'm hunting for cheap 6x32GB options to test, but won't buy any unless I find something with a lower price/gb than 16gb dimms on the market right now.

Hopefully you can break the 5x32GB record which was done in Yosemite.

 

[tobismus]

Hopefully you can break the 5x32GB record which was done in Yosemite.

Aloha, just checking my very new membership, right now..

Will post about some further 32GB Ram modules testing on my flashed cMP 4.1>5.1, as soon as possible.

 

[VaZ]

We should be testing out the larger 64GB Module DDR3 1333MHz Samsung M386B8G70DE0-YH9 10600 Load Reduced Memory

 

[tobismus]

We should be testing out the larger 64GB Module DDR3 1333MHz Samsung M386B8G70DE0-YH9 10600 Load Reduced MemoryView attachment 830245

..interesting thought, but naturally, I'd go for 192 (6x32), first, probably getting best speed.
And 256, to compare.
Don't have too much money to play with, anyway..

 

[AidenShaw]

..interesting thought, but naturally, I'd go for 192 (6x32), first, probably getting best speed.
And 256, to compare.
Don't have too much money to play with, anyway..

The topic title is for the MP6,1 (AKA "trash can"). It only has four DIMM slots.

The discussion has strayed to include old cMP systems, however. Just a warning for everyone to make sure that they're talking about the same things.

 

[tobismus]

The topic is for the MP6,1 (AKA "trash can"). It only has four DIMM slots.

The discussion has strayed to include old cMP systems, however. Just a warning to for everyone to make sure that they're talking about the same things.

Indeed, right you are.
I'll start a new thread, or find an older one, about 32GB RAM modules in the cMP.
Best, T

 

[mrtang42]

It is a good time to find some cheap big module of ddr3-10600R from recycling store to this old cMP. According to Intel, each x56xx can support up to 288 GB(depending on the module type). But I believe 192GB is reasonable.