Monday, July 1st 2024
DDR5-6400 Confirmed as Sweetspot Speed of Ryzen 9000 "Zen 5" Desktop Processors
AMD's upcoming Ryzen 9000 series "Granite Ridge" desktop processors based on the "Zen 5" microarchitecture will see a slight improvement in memory overclocking capabilities. A chiplet-based processor, just like the Ryzen 7000 "Raphael," "Granite Ridge" combines one or two "Zen 5" CCDs, each built on the TSMC 4 nm process, with a client I/O die (cIOD) built on the 6 nm node. The cIOD of "Granite Ridge" appears to be almost identical to that of "Raphael." This is the chiplet that contains the processor's DDR5 memory controllers.
As part of the update, Ryzen 9000 "Granite Ridge" should be able to run DDR5-6400 with a 1:1 ratio between the MCLK and FCLK domains. This is a slight increase from the DDR5-6000 sweetspot speed of Ryzen 7000 "Raphael" processors. AMD is reportedly making it possible for motherboard manufacturers and prebuilt OEMs to enable a 1:2 ratio, making it possible to run high memory speeds such as DDR5-8000, although performance returns with memory speeds would begin to diminish beyond the DDR5-6400 @ 1:1 setting. Memory manufacturers should launch a new wave of DDR5 memory kits with AMD EXPO profiles for DDR5-6400.
Source:
Wccftech
As part of the update, Ryzen 9000 "Granite Ridge" should be able to run DDR5-6400 with a 1:1 ratio between the MCLK and FCLK domains. This is a slight increase from the DDR5-6000 sweetspot speed of Ryzen 7000 "Raphael" processors. AMD is reportedly making it possible for motherboard manufacturers and prebuilt OEMs to enable a 1:2 ratio, making it possible to run high memory speeds such as DDR5-8000, although performance returns with memory speeds would begin to diminish beyond the DDR5-6400 @ 1:1 setting. Memory manufacturers should launch a new wave of DDR5 memory kits with AMD EXPO profiles for DDR5-6400.
75 Comments on DDR5-6400 Confirmed as Sweetspot Speed of Ryzen 9000 "Zen 5" Desktop Processors
Sure, you get a lot of bang for the buck, but if you're looking at $700+ just for the CPU+mobo+RAM, that's going to give pause to a lot of prospective buyers. On the other hand, there is no longer an Intel+DDR4 cheaper alternative, so maybe AMD does better this round.
TeamGroup T-Force Delta RGB 32GB (2 x 16GB) DDR5-6400 PC5-51200 CL40 Dual Channel Desktop Memory Kit FF4D532G6400HC4 - White - Micro Center
Rimworld
Oxygen not included
Rouge Tech - needs 64 rather than 32
No other game did go over 16 Gig.
Does anyone know something recent that breaks 16 Gig?
Something badly ported i assume?
I'm looking at 2x32 sticks myself. I like to double memory when I upgrade a platform.Is that so?How often do you guys reboot your PC?
I maybe do 1 or 2 reboots a month.Silicon Lottery I've seen plenty of AM4 chips that cannot do 2000/2000
Wasn't most builds around 1:28 or 28:1 for AMD last year and this year? Most people just put in their EXPO for their memory and that's it, they don't even know much about the way the system was designed.
Most people buy prebuilt computers and call a support line when they run into trouble.
32GB is probably enough, but I always said that about my other builds too and wished for more later. If it's a X3D build I wouldn't worry about hitting a specific timing as it doesn't seem to change anything drastically.
C28 will likely require significantly more voltage than the expo settings at 6000/6200, 6400 c28 would require a better than average imc, 1.5ish+ vdimm and active cooling.
Corsair Vengeance schwarz DIMM Kit 96GB, DDR5-6000, CL30-36-36-76, on-die ECC
Kingston FURY Renegade schwarz/silber DIMM Kit 96GB, DDR5-6400, CL32-39-39, on-die ECC
The Corsair is enlisted at the board's QVL. Both have the same ms in the subtimings.
I'm already on 64GB just for photo/video/simulation reasons, and it made a huge improvement over 32GB. Now I want more than 16GB in my gpu as AI software I use leverage gpu.
Not really desirable, but that's the way things have moved.Does that mean a 3200MHz IF or did I read it wrong? That would be big, if unlikely-sounding.
2) If - as you said - the am4 support is anything to go by, oh boy. An AM5 owner will need to pray that Intel releases some great products like alderlake, cause if they don't, you kiss your upgradability goodbye. Need I remind you older mobos didn't get support for zen 3 until 2 years after zen 3 was released, and that was because of how competitive alderlake was. By the time I actually got support for zen 3 on my b350 for zen 3 (may of 2022, lol) I had already moved to a new platform. If we get the same crap with AM5, no thanks. Like really, no, thanks.
Edit:
I just have seen that my X570 board has a new Beta BIOS to update to AMD AGESA V2 1.2.0.C (published today)
I see real issues with the AM5 platform, and the lack of innovation in the CPUs is letting Intel catch them up and even overtake AMD now. I don't like that, I love what AMD did with AM4 and Zen 3, but Zen 4 was a huge disappointment, AM5 is a huge disappointment, and Zen 5 looks more of the same with its awful memory controller and lack of innovations. AMD need to dump this awful 3D cache money grab. Its greedy and there is no longer an excuse to have 2 different ranges of high-end CPU's with a bolted-on fix for their awful memory controller, which will soon be delivering half the bandwidth of Intel parts and offering much higher latency.
You need to stop drinking the AMD koolaid and see how behind they are becoming in certain areas. It was insane they didn't make USB4 ubiquitous on AM5, it was already overpriced enough, and now you need a new 8x0 MB. Memory support is a joke, bootup times are a joke although some have stated it has been fixed to a certain degree.
AMD fanbois are the absolute worst. Do your own research into the upcoming Intel chips and their IPC gains, and upcoming support for DDR5 10000+ next year.
If you want USB4 that is your choice but objectively X670E boards are more flexible than X870E boards. This USB4 narrative is hard for me to understand but I guess you need it on X870 as you will be missing 1 or 2 M2 slots on the board for storage. My X670E board already has 3 USB C slots on the rear and 1 header connected to the case front panel USB C. As I understand it there was more than AMD not wanting to support USB4 on AM5 but some partners not playing fairly.
Boot times: Non issue, CPUs receive updates as they age to mitigate that, for some context long boot also has to do with which RAM profile you choose as the first Expo profile will only train RAM on initial boot, while the 2nd profile will train the memory on every single boot. They might even have fixed that though.
Intel IPC Gains, while at Computex it looked so foolish that we could see the new Intel MBs but cannot "see" them. I like the increase in PCIe lanes on the new Intel chips but I like more that I will be able to buy whatever CPU I want for CPU releases until 2027 for AM5. That is good enough for me. Maybe then we may need an upgrade. So even if it is 8% faster in IPC than my 7000 chip, it won't be enough for me to change platforms.
Summarily AM5 is faster in every way than AM4 and AM4 should give anyone who has used it the confidence to know AMD knows what they are doing. You don't have to buy it if you don't want anyway but to attack people because they like it is ignorant if all you are saying is the narrative. We don't even have reviews yet of the latest chips to guage where AMD is at anyway.
Or do you mean amd should completely stop releasing non x3d chips? That would have a huge impact on their margins I think. Ain't happening.
You're not the center of the universe, Copernicus.