All the memory specs can be found from Gigabyte TRX50 AERO D QVL list
www.gigabyte.com/Motherboard/TRX50-AERO-D/support#support-memsup
There will be 16 & 24GB dimms with max. 7800MHz and 32GB DIMMs with max 6400MHz.
There are listed also many 48, 64 and 96GB DIMMs but only with max 5200MHz speeds.

Looks like Threadripper will be a hit again. I doubt it will have the uptake of X399 in the DIY though the costs are already too high in the Desktop space but the cost of the MBs should shame all of those $1000+ Z790 and X670E boards.

Those OCZ Platinums though.

Still find it dumb they won't allow standard DDR5 on the Threadripper platform. Pro line, sure. But the standard TR platform should be opened up to allow standard DDR5.

FlyordieStill find it dumb they won't allow standard DDR5 on the Threadripper platform. Pro line, sure. But the standard TR platform should be opened up to allow standard DDR5.

You can't use DDR5 and DDR5R DIMMs in the same motherboard. DIMMs are not mechanically and electrically compatible.
UDIMMs use 5V while RDIMMS use 12V.

en.wikipedia.org/wiki/DDR5_SDRAM
...
DDR5 RDIMMs/LRDIMMs use 12 V and UDIMMs use 5 V input. In order to prevent damage by accidental insertion of the wrong memory type, DDR5 UDIMMs and (L)RDIMMs are not mechanically compatible.
...
For more information, see this.

demuYou can't use DDR5 and DDR5R DIMMs in the same motherboard. DIMMs are not mechanically and electrically compatible.
UDIMMs use 5V while RDIMMS use 12V.

en.wikipedia.org/wiki/DDR5_SDRAM
...
DDR5 RDIMMs/LRDIMMs use 12 V and UDIMMs use 5 V input. In order to prevent damage by accidental insertion of the wrong memory type, DDR5 UDIMMs and (L)RDIMMs are not mechanically compatible.
...
For more information, see this.

Never said they could be? I merely said it was stupid they didn't allow DDR5 to be used with the platform. No reason it can't be done. The IMC has DDR5 support so no reason a DDR5 board can't made by manufacturers.

All AMD is doing here is adding to the E-Waste pile. Now if they want to ditch DDR5 entirely and move AM5 to the standard and make the platforms all unified on memory standard, then sure.

FlyordieNever said they could be? I merely said it was stupid they didn't allow DDR5 to be used with the platform. No reason it can't be done. The IMC has DDR5 support so no reason a DDR5 board can't made by manufacturers.

All AMD is doing here is adding to the E-Waste pile. Now if they want to ditch DDR5 entirely and move AM5 to the standard and make the platforms all unified on memory standard, then sure.

Dude, what e-waste? If anything is e-waste it's exactly desktop memory - non-ECC, because they have to waste capacity on it. Consumer DDR5 is pseudo-on-chip-ECC (e-waste), cutdown version of real ECC. Considering density in enterprise segment amount of ECC server grade memory going into workstations/servers/HPC is huge orders of magnitude larger its not even a contest.

ECC in every platform is very long overdue change. About bloody time it happened. ECC solves plethora of problems with memory which plagues/d non-ECC sticks. It's mainy Intel fault that they artificially limit(ed) its adoption for past 15 years when AMD was in the wilderness. If AMD would have products like Zen today back then, we would have ECC DDR3/4 in desktops for the masses.

ypsylonDude, what e-waste? If anything is e-waste it's exactly desktop memory - non-ECC, because they have to waste capacity on it. Consumer DDR5 is pseudo-on-chip-ECC (e-waste), cutdown version of real ECC. Considering density in enterprise segment amount of ECC server grade memory going into workstations/servers/HPC is huge orders of magnitude larger its not even a contest.

ECC in every platform is very long overdue change. About bloody time it happened. ECC solves plethora of problems with memory which plagues/d non-ECC sticks. It's mainy Intel fault that they artificially limit(ed) its adoption for past 15 years when AMD was in the wilderness. If AMD would have products like Zen today back then, we would have ECC DDR3/4 in desktops for the masses.

Speed and pricing. It reduced pricing for DRAM and increased its speed so Intel could get more people hooked on Intel for less. Servers and HEDT Workstations have a unique requirement for error free operation. As for wasting capacity? How so? The same amount of RAM will need to be produced for the consumer markets only this time it add a buffer die.

I've been using Threadripper for going on now 6 years on 32GB of DDR4-3200 "B Die" and did 24 straight hours of memtest to verify stability and rule out errors. Haven't had an issue with memory errors. I've even tightened the timings up since I did my sys specs. 14-14-14-28-1T @ 1.325V @ 3266 in quad-channel 4x8GB sticks.

If the same memory requirement was imposed for TR on X399 you'd be limited to 2666 which would cripple the performance of the platform. There is a time and a place for each memory type and RDIMMs on an enthusiast, overclocking platform is not one of them. If you wanted to do ECC only and allow support for both non-ECC and ECC then sure. But, requiring REGISTERED memory.. No. To me this looks like AMD really did kill off Threadripper and the only reason they brought it back is because the server market has shifted more to GPUs and server CPU sales are likely beginning to stagnate. To think, I was willing to spend some money on bumping to this new platform.. Not anymore. I'm staying on X399 for a while longer.