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AMD to unveil Zen 4 CPUs at CES 2022

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No surprise, but CB report that DDR5 prices will delay the start for 6000G (the Zen3+ Rembrandt APUs):
https://www.computerbase.de/2022-01...-bremsen-start-von-zen-3-plus-im-desktop-aus/

One of the dynamics that we do think about a great deal is how and when to introduce that AM5 ecosystem and ensure that the DDR5 supply, as well as pricing of DDR5 memory, is mature and something that's easily attainable for an end-user.

David McAfee, AMD

Although it looks like CB got this story via Tom's
https://www.tomshardware.com/news/a...desktop-pcs-ddr5-pricing-impacts-release-date

Guess the interesting thing is that Zen3+ was supposed to introduce the AM5 platform so that when Zen4 hits everything is ready. From a risk-management PoV that makes/made sense rather than launching everything with Zen4, however APUs tend to be price sensitive so only launching the 6000G's on DDR5-only AM5 was always going to risky.
 
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Waiting for Zen 4, 3900X will tide me over until then, not much need for a faster CPU atm so probably won't get tit on launch, and would like to move away from the Asus 570x motherboard I'm using....

Can then just move to new AM5 mobo, DDR4 memory and whatever the new 8-12 core CPU is from AMD.
 
Highly unlikely AMD will have DDR4 support for AM5.
For me even better, if i move to new platform i will buy everything new, and ddr5 only controller will be better and faster than Intel hybrid controller. Hybrid design have compromises, so i dont need that if i buy completely new platform.
 
Highly unlikely AMD will have DDR4 support for AM5.
True but ironically, with their chiplet strategy it would be easy(ish) for them to support both with Zen4. Not AM5 and I guess AM4 wouldn't have the power pins but still, chiplets should have it easier than monolith at a memory standard transition time.
 
For me even better, if i move to new platform i will buy everything new, and ddr5 only controller will be better and faster than Intel hybrid controller. Hybrid design have compromises, so i dont need that if i buy completely new platform.
The compromise is that you can use DDR4 which makes a build substantially cheaper while not really giving up any performance atleast till DDR5 hits around 8000mhz with good timings.
 
True but ironically, with their chiplet strategy it would be easy(ish) for them to support both with Zen4
Indeed. "All" it would take is an IO die with a DDR4 memory controller, but then you have the issue of designating which Ryzen 7000 is DDR4 only and which is DDR5 only. At least with Alder Lake the hybrid controller removes that additional confusion.
The compromise is that you can use DDR4 which makes a build substantially cheaper while not really giving up any performance atleast till DDR5 hits around 8000mhz with good timings.
With Intel maybe. There's nothing to say the same applies to Zen 4. For all we know Zen 4 could be crippled by DDR4. The Ryzen 6000 APUs are DDR5 only for this exact reason.
Meant DDR5. :D
I did think that ;)
 
With Intel maybe. There's nothing to say the same applies to Zen 4. For all we know Zen 4 could be crippled by DDR4. The Ryzen 6000 APUs are DDR5 only for this exact reason.
It's unlikely that AMD will be able to run 1-1 fclk with any DDR5 over 4800mhz so with the latency penalty then it may not be as good as people think it will be especially with the 1st gen CPUs on the new socket.
 
The compromise is that you can use DDR4 which makes a build substantially cheaper while not really giving up any performance atleast till DDR5 hits around 8000mhz with good timings.
That is advantage of hybrid design, compromises are it will work slower, support less modes etc, and i don't need that if i build completely new platform. Zen 4 IO die will be on TSMC 6nm node which is significantly better than anything from gloFlo. It will use less power, less die size, and work on much higher speed. We can see how good memory controller are on APU, they can work without problems on 2000mhz infinity fabric, with Zen 4 it will be even better, they have experience, feedback from previous models, and very good 6nm node.
 
AMD were contractually obliged to make something at GloFo 14nm but why the IO die? should have just made a re-branded Ryzen 1600 on it as a budget option and flogged it for $120.

Besides that i'm not sure Intel CPU's ever ran 4400MT/s or higher with a 1:1 ratio, Rocket Lake never did but we only know that because with it Intel followed AMD in allowing the user to override the IMC.
 
It's unlikely that AMD will be able to run 1-1 fclk with any DDR5 over 4800mhz so with the latency penalty then it may not be as good as people think it will be especially with the 1st gen CPUs on the new socket.

Sorry, what? First Gen CPU's? The socket has no effect on the performance of the silicon inside. They are coming from a 12nm I/O developed over 5 years ago, to a 'new' I/O die on a smaller node. My 5600G runs 2200MHz IF, that's a 7nm monolithic design so not really indicative of how capable a separate I/O die could be.

Let's also not forget AMD are moving fully from IF to IA (Infinity Architecture) with Zen4, I'd hope it comes to the enthusiast desktop I/O at the least, given how much impact it will have with the GPU tie in.
 
Sorry, what? First Gen CPU's? The socket has no effect on the performance of the silicon inside. They are coming from a 12nm I/O developed over 5 years ago, to a 'new' I/O die on a smaller node. My 5600G runs 2200MHz IF, that's a 7nm monolithic design so not really indicative of how capable a separate I/O die could be.

Let's also not forget AMD are moving fully from IF to IA (Infinity Architecture) with Zen4, I'd hope it comes to the enthusiast desktop I/O at the least, given how much impact it will have with the GPU tie in.
If they used 7nm node for Zen 3d IO die it would be brutal a.k.a ADL killer. Even with old node they showed better performance than 12900k, with better memory controller difference will be even bigger, especially in those games that show equal performance.
 
Sorry, what? First Gen CPU's? The socket has no effect on the performance of the silicon inside. They are coming from a 12nm I/O developed over 5 years ago, to a 'new' I/O die on a smaller node. My 5600G runs 2200MHz IF, that's a 7nm monolithic design so not really indicative of how capable a separate I/O die could be.

Let's also not forget AMD are moving fully from IF to IA (Infinity Architecture) with Zen4, I'd hope it comes to the enthusiast desktop I/O at the least, given how much impact it will have with the GPU tie in.
Try doing 2200 fclk with the first gen 1700X then.
 
The bin quality of silicon improves over time, any given node gets refined over time

Its how Intel was able to go from Haswell on 14nm struggling to do 4.4Ghz to ending with Coffee Lake on the same node doing up to 5.2Ghz.
 
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