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Asgard launches world's first DDR5-9600 DIMMs

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Re: Asgard launches world's first DDR5-9600 DIMMs

#21

Post by Numerlor »

gryn wrote: post #20

did they also make a compatible motherboard ? because I can't get mine to go past 4800Mhz when my RAM is rated for 6400Mhz with AM5 CPU. for those who hadn't done this for a while, PSA: motherboards these days have a RAM compatibility list on their product page, check it before overspending on RAM.

The motherboard QVLs aren't particularly useful, the higher tier kits can often just not work as they're currently more often than not limited by the CPU memory controller quality instead of purely motherboard or RAM ICs.

Did you try 6200/6000 for the kit? 6400 is up there for speeds that may not work on AM5 with synced controller and memory clocks without tuning it yourself, or working at all. Or is that 4 DIMMs

Re: Asgard launches world's first DDR5-9600 DIMMs

#23

Post by Szpadel »

gryn wrote: post #20

did they also make a compatible motherboard ? because I can't get mine to go past 4800Mhz when my RAM is rated for 6400Mhz with AM5 CPU. for those who hadn't done this for a while, PSA: motherboards these days have a RAM compatibility list on their product page, check it before overspending on RAM.

I had similar issue with my 3950x I had stability issues with 3600MT, so I optimized clicks instead (I loaded XMP profile and then changed clock to lower value before tightening clocks with memtest runs in between) What people often don't realize that dimm quality allows you to get lower absolute time before data is available for system. So when you lower clocks, you don't need to wait that many cycles for the data. In that case you might not get that much bandwidth that you would have originally, but you can get the same or similar latency also changing order of dimms on board can somehow alter how low you can get (I have 4 dimms and swapping 2 on the same channel improved significantly clocks that I was able to achieve - no idea why)

Re: Asgard launches world's first DDR5-9600 DIMMs

#24

Post by zalebz »

gryn wrote: post #20

did they also make a compatible motherboard ? because I can't get mine to go past 4800Mhz when my RAM is rated for 6400Mhz with AM5 CPU. for those who hadn't done this for a while, PSA: motherboards these days have a RAM compatibility list on their product page, check it before overspending on RAM.

Make sure you're on the latest BIOS as many improvements have been made since early AM5.

Anecdata: I just bought a used AM5 mobo and threw in this memory kit CMK64GX5M2B6400C32; hitting 6400 was as simple as turning on XMP and that's it.

Re: Asgard launches world's first DDR5-9600 DIMMs

#25

Post by ourmandave »

gryn wrote: post #20

did they also make a compatible motherboard ? because I can't get mine to go past 4800Mhz when my RAM is rated for 6400Mhz with AM5 CPU. for those who hadn't done this for a while, PSA: motherboards these days have a RAM compatibility list on their product page, check it before overspending on RAM.

I haven't done this for a while, but every time I come back around the new specs with even basic hardware blow the doors off my old rig.

Re: Asgard launches world's first DDR5-9600 DIMMs

#26

Post by govg »

guruprasadah wrote: post #4
blackeyeblitzar wrote: post #3

Earlier quoted context omitted.

This is happening a lot in many product categories as a way to market effectively for international audiences, without some of the mistakes Chinese firms have historically made. Borrowing from other cultures is easier. For example in audio, Hifiman is a Chinese audio company that previously used alphanumeric names for their headphones but now uses various Hindu or Sanskrit (?) words to name their headphones and give…

From a quick glance at the website, the only two such products I can see are the "Susvara" (meaning "with notes") headphones and "Deva" (meaning "god") series headphones. Both of those words are Sanskrit. Their hindi equivalents are quite similar sounding (Susvar and Dev).

They also sell/have sold the Arya, the Sundara, and the Ananda.

Re: Asgard launches world's first DDR5-9600 DIMMs

#27

Post by Gracana »

rowanG077 wrote: post #18
wtallis wrote: post #12

Earlier quoted context omitted.

These are part of a new generation of DDR5 modules that add a clock driver to the module itself, rather than relying entirely on the clock signal coming all the way from the CPU's memory controller. That is expected to significantly change the game for DDR5 overclocking, and expectations based on the limitations of configurations lacking the clock drivers may not be accurate. I expect we'll see 6+ months of firmware…

How does that work? I imagine you now have the feed to clock from ram back to the CPU? Or does it synchronize two local clocks somehow?

The clock redriver uses a phase locked loop to generate a few identical clock signals for use by the DRAM chips on the module. This same tech is also used for clock multipliers and dividers throughout digital systems.

Rambus has details on their "DDR5 client clock driver" here: https://www.rambus.com/memory-interface-chips/ddr5-client-di...

Re: Asgard launches world's first DDR5-9600 DIMMs

#28

Post by zamadatix »

gryn wrote: post #20

did they also make a compatible motherboard ? because I can't get mine to go past 4800Mhz when my RAM is rated for 6400Mhz with AM5 CPU. for those who hadn't done this for a while, PSA: motherboards these days have a RAM compatibility list on their product page, check it before overspending on RAM.

More than the specific list of which RAM is compatible check the table of how many slots/GB is supported at which speed. 1x 8 GB DIMM is a lot easier to drive than 4x 48 for example. Also keep in mind a lot of it depends more on the CPU than the motherboard itself, though both play a part, and the QVL should be a "safe bet". Particularly if you're willing to throw a bit of extra voltage at the RAM.

CUDIMs should help a bit with those scaling tables due to having the clock redrivers, but we'll have to see to be certain how much.

Re: Asgard launches world's first DDR5-9600 DIMMs

#29

Post by Numerlor »

rowanG077 wrote: post #18
wtallis wrote: post #12

Earlier quoted context omitted.

These are part of a new generation of DDR5 modules that add a clock driver to the module itself, rather than relying entirely on the clock signal coming all the way from the CPU's memory controller. That is expected to significantly change the game for DDR5 overclocking, and expectations based on the limitations of configurations lacking the clock drivers may not be accurate. I expect we'll see 6+ months of firmware…

How does that work? I imagine you now have the feed to clock from ram back to the CPU? Or does it synchronize two local clocks somehow?

This anandtech article seems to be a decent summary of what it's doing, the JEDEC JESD82-531A.01 spec is also freely available (with registration) if you're feeling adventurous

https://www.anandtech.com/show/21455/making-desktop-ddr5-eve...

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