Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)

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StefanR5R

Elite Member
Dec 10, 2016
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If that is the case they wouldn't have to reexamine the entire current inventory.
...only a part of the inventory which was first to arrive at distributors.
(Besides, they might just discard it rather than refurbish it.)

--------

So AMD have a new microarchitecture, and the first products with it which make it to the market are laptop computers, not mere desktop chips this time around. I don't recall that there is precedence.

Mike Clark said:
Does this mean that Turin-dense is going to be early, or that Turin-classic is going to be late?
 

yottabit

Golden Member
Jun 5, 2008
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Yeah, by a lot, each CCD gets 2*32B fabric uplink (aka the new norm going forward).

That's not the limiting factor at all.
LPDDR5x @ 8533 MHz with 256-bit interface is 273 GB/s.
And I believe DDR5 @ 8000 MHz dual channel would be ~ 128 GB/s ? So over twice the membw

I don't understand the significance of the 2*32B fabric uplink thing if anyone cares to expand on that. I can't imagine that would bottleneck DRAM bandwidth right? But I'm guessing improves inter-CCD communication?
 

Det0x

Golden Member
Sep 11, 2014
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~70 GB/s read is the hardlimit @ 2200mhz FCLK for a single set of GMI links (single CCD), even at 8800MT/s memory speed)


~76.5k GB/s read is the hardlimit @ 2400mhz FCLK


And ~81 GB/s read is the hardlimit @ 2550mhz FCLK


You only need ~6000MT/s memory speed to fully saturate 2500mhz FCLK read limit (screenshot below is not mine)


Like i wrote on previous page, Zen4 and now Zen5 is pretty much all read bandwidth limited by FCLK, while write is not.
You gain like + ~50% read bandwidth compared to single CCD when running a dual CCD CPU.

So theoretical, if the italian guy were really running 2400mhz FCLK on the 9900X, he would have around ~115GB/s read numbers in Aida
 
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CouncilorIrissa

Senior member
Jul 28, 2023
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And I believe DDR5 @ 8000 MHz dual channel would be ~ 128 GB/s ? So over twice the membw

I don't understand the significance of the 2*32B fabric uplink thing if anyone cares to expand on that. I can't imagine that would bottleneck DRAM bandwidth right? But I'm guessing improves inter-CCD communication?
A Zen 4 CCD has a single 32B/cycle fabric uplink, which means that single-CCD part can't have read bandwidth of higher than 64 GB/s (at FCLK of 2000 MHz that is).

 

BigIronOnHis

Junior Member
Jul 24, 2024
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OK, you are telling me that they will get the CPUs back, every single one of them, run them through their QA test gauntlet and get them back on shelves ON August 8th for the single CCD CPUs????

Please, please THINK about that for a second.

Doing that FOR all shipped CPUs regardless of region or territory means they have testing facilities in every region within reach. Please tell me that you don't believe that to be true because that would be ABSURD. Even Intel doesn't have that.
The CPUs sold in a few weeks will not be the same ones that are being recalled lol. The delay is likely just the time needed to ship out and restock shelves with chips that have been fully validated.
 
Jul 27, 2020
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The delay is likely just the time needed to ship out and restock shelves with chips that have been fully validated.
Possible I guess. Still, it would have been better if AMD had disclosed the exact nature of the issue and how an improperly validated CPU was gonna behave because quite a few people out there may have paid full or even more than full price for their CPUs that weren't supposed to be on sale yet and they will live with them and encounter some weird issue and think AMD sucks and the retailer isn't gonna bother about calling the customer to get that CPU back because they already got what they wanted: the customer's cold hard cash!
 

IEC

Elite Member
Super Moderator
Jun 10, 2004
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Read your statement. Then read it again.

If it's due to not having run all the validation checks as the statement by AMD's spokesperson says, AMD wouldn't know with reasonable certainty (99.999%+) how the CPU would behave - and that's the point of recalling it!

Possible I guess. Still, it would have been better if AMD had disclosed the exact nature of the issue and how an improperly validated CPU was gonna behave because quite a few people out there may have paid full or even more than full price for their CPUs that weren't supposed to be on sale yet and they will live with them and encounter some weird issue and think AMD sucks and the retailer isn't gonna bother about calling the customer to get that CPU back because they already got what they wanted: the customer's cold hard cash!
 
Jul 27, 2020
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If it's due to not having run all the validation checks as the statement by AMD's spokesperson says, AMD wouldn't know with reasonable certainty (99.999%+) how the CPU would behave - and that's the point of recalling it!
I hear you.

I just can't wrap my head around the timing of this recall and how the heck so many chips evaded a full validation check. Either AMD should have told us nothing or they should tell us clearly what the heck happened and under what circumstances.
 

branch_suggestion

Senior member
Aug 4, 2023
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N3E is enterprise/server, N3 is efficient junk. N3P is the value play performance/efficiency mainstream 3nm. N3X is for Nvidia, high end performance and increased silicon density.
First N3E part in GA is M4, that is the opposite of a server part.
N3B has parts across the spectrum and is expensive.
N3P will have parts across the spectrum, it will fully replace N3E eventually.
X nodes are niche. Nothing is stopping any of the big companies from paying for the best possible node available, the really expensive stuff is HBM and the really advanced packaging.
 

RnR_au

Platinum Member
Jun 6, 2021
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Not sure if this tidbit has been mentioned yet (thread moves faaast...)

More tentative pricing... from China... and seems to match the Best Buy leak from earlier...

According to the retailer, the AMD Ryzen 9 9950X 16-Core CPU would cost $499 US (3631 RMB), the Ryzen 9 9900X 12-Core CPU would cost $399 US (2904 RMB), the Ryzen 7 9700X 8-Core would cost $299 US (2176 RMB) while the Ryzen 5 9600X 6-Core CPU would cost $229 US (1666 RMB).
https://wccftech.com/chinese-shopke...5-desktop-cpu-prices-lower-ryzen-7000-series/

Although it could be that the Chinese store owner is a reader of Anandtech forums...
 

adroc_thurston

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Jul 2, 2023
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Reactions: Tlh97 and Josh128

Hail The Brain Slug

Diamond Member
Oct 10, 2005
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is the zen 5 X3D still launching in September?

I kinda doubt it now. Probably CES 2025.
If they can release it to compete head-to-head against Intel's next gen for the gaming crown, I don't know why they would artificially delay to CES and potentially give Intel a few months of the gaming crown (pending how the new processors actually perform, of course).
 
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Hail The Brain Slug

Diamond Member
Oct 10, 2005
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Hail The Brain Slug

Diamond Member
Oct 10, 2005
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We all know it was your cousin, don't try to take the credit now!
Been arguing in favor of lower pricing for a while before Frank's store got stock -
All I see here is a bunch of hot air.

Meanwhile, Zen 4 closeout is getting even hotter. $470 7950X3D at Amazon for prime members. IIRC this has been an even hotter fire sale leading to the launch than Zen 3 did for Zen 4. Really lends more credibility to the MSRP cut for Zen 5 skus.

Personally I have the idea that 9950X will be $499.

I think those prices are too high. There would be no reason to keep high pricing a secret so close to launch, those prices won't meaningfully eat into the fire sale prices of Zen 4, like the $465 7950X3D, $310 7900X3D, etc.

I would think they're keeping the pricing a secret because it's low enough it will affect Zen 4 sales.

Intel is in such a weak position thanks to the current debacle, competitive pricing out the gate for the new gen would probably turn a lot of heads.

Even though Zen 4 X3D launched 5 months after Zen 4, they didn't change MSRP on any of the Zen 4 SKU's, only retailer discounts. I believe if AMD is going to launch Zen 5 X3D in September as rumored, they will not price up Zen 5 and price cut/aggressively discount only 2 months later. I think they're going to price the Zen 5 SKU's in their final place in the lineup around where the X3D SKU's will land.

If this is the case, 9950X will be priced at or below $600. I am going extremely optimistically with $499 and know that will be unlikely unless I can manifest it hard enough. I've got my copy of The Secret on my desk and I try to re-read parts of it every day.
 

Hail The Brain Slug

Diamond Member
Oct 10, 2005
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If there is any way those prices are real, they will be so backordered I will never get one until I am old and dead. The 7950x is down to $522, and that less than that.
Both the 7950X and 7950X3D have been frequently dipping to the mid 400's in the last few weeks. They just keep yoyo pricing it.

The delay does conveniently give them a bit more time to try and move old Zen 4 stock before the Zen 5 pricing is even announced, much less sales start.
 
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jdubs03

Senior member
Oct 1, 2013
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Both the 7950X and 7950X3D have been frequently dipping to the mid 400's in the last few weeks. They just keep yoyo pricing it.

The delay does conveniently give them a bit more time to try and move old Zen 4 stock before the Zen 5 pricing is even announced, much less sales start.
Obviously just speculation, but I just can’t see the 9950X being anything less than $549. My guess is it’ll start out at $599 or $649. Just a hunch.

I mean if its predecessor is on sale right now for $522 (a couple of days ago it was $565). Anything under $599 seems like a stretch. Particularly since the 7950X started off at $699.
 
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