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

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inf64

Diamond Member
Mar 11, 2011
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View attachment 111202


What a ride it has been. We went from the haters celebrating Zen5% and how lame that is because we needed more gaming performance than that generationally. To Arrow coming out and being a disaster. So the cope kicked in hard with the "People do more than game on their PC you know!"

Then the 9800X3D launching, and suddenly none of us need that much CPU for gaming.

"It doesn't matter at 4K!" "It doesn't matter if you don't have a 4090!" I am getting second hand embarrassment from reading it everywhere.
Framechasers cringelord heard you . It is hilarious since it's coming from a guy who is selling gaming tweaking/OC guides for the most expensive CPUs. Also he complains about something he can only detect ("AMDip") lol

 

inquiss

Senior member
Oct 13, 2010
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have to say, the eye popping Gaming performance seems to have shadowed the impressive general application perf IMO


I haven't had a chance to pour over data from the 7800X3D in huge detail, , but just from hindsight and what I have seen the standout for me is how Zen 5 has responded to cache outside of gaming workloads. The effective 'ipc' increase seems notably more significant.. around 8% in CnC's Spec INT Testing, and in Computerbase's Tests for CB24 , we can see it's around 6% faster than the TDP unlocked 9700X in Multi core as they both sit at roughly 5.2Ghz under All core load in this case (conveniently - check their OG 9700X review)

In ST CB it sits around 4% higher iso clock estimated (The 9700X is 5.5% higher clocked, but only 2% higher performance) , Ditto WebXPrt



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The end result is in MT in particular, some quite phenomenal overall performance really for an 8 core CPU @ 5.2Ghz .. It's like Zen 5 comes alive.

It would be great to see what it does with the wick wound down a bit too.
Yeah, definitely. Shows how limited zen 5 is by the memory subsystem. Strix halo will be a bit more unchained in that regard and I'm expecting strong productivity performance without the need for 3D vcache.
 

Josh128

Senior member
Oct 14, 2022
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if leaks 9950X3D is true, and will be faster in games than 9800X3D, that also gonna be best universal CPU for gaming and work
MSI 9950X3D show it will be worse in games than 9800X3D. Scheduling issues will undoubtedly cause anomalies that will bring its average vs 9800X3D down a bit.
 

KompuKare

Golden Member
Jul 28, 2009
1,203
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What really needs to stop is the 10 versions of the same test.

Imagine a productivity suite that was just 10 different 3d renderers, most of which nobody uses. That is what CPU gaming benchmarks are pretty much, it just covers the AAA titles with very little covering the rest of the gaming market. GN atleast test Stellaris and some of the german sites test ANNO so there are a few places that at least throw in those sorts of titles but if you wanted a proper suite you would do something like the below

1 e-sports shooter. (CS2, Cod, Valorant)
1 e-sports MOBA. (LoL or Dota)
1 RTS (starcraft 2)
1 ARPG (path of exile, Diablo 4)
1 turn time test (civ 6, civ 7 next year)
1 sim rate test (HoI4, Cities skylines, Factorio, Satisfactory)
1 survival game (PubG, Rust)
1 Flight sim (MSFS, Xplane)
1 racing sim (ACC, iRacing)
1 Bethesda game (Modded Skyrim given that is more popular than Starfield or Starfield given that is the newest iteration of the engine)
1 CDPR game (CP2077 given that is their latest and is popular)
1 Larian game (BG3)
2 AAA games that are currently popular

That covers a 15 game suite and would give you a pretty broad look at a lot of different titles, some of which are AAA and some of which go beyond just looking at that.

Then imagine if there were 5 different outlets that each tested a different game in each category or where they do test the same game they each tested a unique scene. That would give you far more scope to make a purchasing decision.
Excellent post!

The whole tabloid journalism of perfomance being a simple linear thing really needs to go. Obviously someone who runs and plays everything will have it harder, but most of us only do certain things so the:
"What is the best CPU?"
Should almost always be met with:
"What do you do/play?"
(And what is your budget!)

As with most things in life, there is seldom a simplistic "best", and even against 7800X3D there are still some outliners where RPL is faster (ignoring power).
 

Gideon

Golden Member
Nov 27, 2007
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Yeah, definitely. Shows how limited zen 5 is by the memory subsystem. Strix halo will be a bit more unchained in that regard and I'm expecting strong productivity performance without the need for 3D vcache.
It has gobs of memory bandwidth as well as a SLC.

I'm not sure how much the latter is actually used by the CPU portion, but i guess it can reduce latency for cases where different CCDs modify the same system memory. Should be faster than snooping each-other's caches, let alon go to main memory.
 
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Jul 27, 2020
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As with most things in life, there is seldom a simplistic "best", and even against 7800X3D there are still some outliners where RPL is faster (ignoring power).
And ignoring the possibility of the CPU being just wasted piece of silicon after it's been zapped enough times by the ST boosts

Though one could start disabling the affected cores one by one to prolong its life and allow it to enjoy life a little longer...
 
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Gideon

Golden Member
Nov 27, 2007
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I have to say I really like the methodology of this Polish reviewer (use google translate if needed) on testing tuned settings and CPU bottlenecked scenarios:


All measurements in programs were performed four times, while in computer games eight times (two separate rounds covering four passes, preceded by a platform reset). The result that differed the most from the rest was rejected, and then an arithmetic mean was taken from the rest. In the game performance graphs, the individual bars mean: the longest is the average number of frames generated per second (AVG FPS), the middle is the average value for the lowest frames per second (MIN FPS), the shortest are frames per second (1% LOW) that are below the average MIN FPS for 99% of the time. The above description may seem enigmatic to readers unfamiliar with the terminology, so 1% LOW should be read as a symptom of performance drops, stutters, drops, etc., if it significantly deviates from the MIN FPS indications.
...

DDR5 memories worked at 7000 MHz and latencies of 32-48-48-96, always working in asynchronous mode or Gear2 (1:2), which is mandatory for Intel LGA 1700 platforms and optional for the AMD AM5 platform. In the case of the AMD AM5 platform, the DDR5 7000 MHz CL 32-48-48-96 (1:2) settings are equivalent to the DDR5 6000 MHz CL 30-36-36-76 (1:1), as confirmed by THIS article ( LINK ) and the sample charts below. Therefore, I decided to use identical DDR5 RAM modules for both platforms. The problematic 1:1:1 configuration is no longer required to achieve optimal performance on the AMD AM5 platform, because the correlation between the Infinity Fabric bus, the memory controller and the RAM clock has changed compared to its predecessor. Therefore, the asynchronous mode in the AMD AM5 implementation is much more useful than before. The Infinity Fabric bus on the AMD AM5 platform worked at an automatic frequency (2000-2100 MHz),
...
Why are some games ray tracing enabled, when it is widely known that it additionally burdens the graphics card? This is partly true, but the above statement is imprecise, because ray tracing also affects the CPU utilization. The relationship between CPU/GPU depends on the implementation of ray tracing in specific titles, because in some cases the GPU utilization can even drop, while the CPU load increases. For example - Spider Man Remastered, Hogwarts Legacy or Dying Light 2 practically do not change the relationship between components, although enabling ray tracing reduces the overall performance, which allows you to check the configurations in the most demanding scenario.

...
In computer game tests, I use my own measurement locations, which I capture during long hours of sessions, but all of them are completely normal scenarios occurring during gameplay. I consistently avoid built-in benchmarks, because most of them do not reflect real conditions and distort the results, often being an element of manipulation by hardware manufacturers and drivers. Therefore, the best choice are test locations in popular locations or sequences played during the campaign, which cannot be skipped and/or affect the overall experience of the game. To increase the reliability of the measurements, I present my measurement locations below:

Makes sense to me. All CPU intensive options are "on" and all areas tested are listed below (usually only busy city scenes with lots of NPCs, etc to offer the worst case CPU bound scenarios).

We already know that X3D chips perform extremely well in games with relatively low CPU usage say at 720p in otherwise GPU bound areas (as it becomes almost entirely memory subsystem limited). These benches highlight the cases where 7800X3D struggled more.

The good news? 9800X3D passes these with flying colors too and 285K is even worse than ever
 

In2Photos

Platinum Member
Mar 21, 2007
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I was watching another review of the 9800X3D and the reviewer noted a difference in the core voltage under CB R24 which accounts for the difference in power consumption compared to the 7800X3D. The higher clocks need more voltage (which we know). Despite the much higher core voltage the temps are still lower. Here's what he saw in testing:

 
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OneEng2

Senior member
Sep 19, 2022
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What is most interesting to me (a non gamer) about the 9800X3D reviews is that it looks like the core architecture still has some room to grow. A few tweaks here and there to alleviate some bandwidth bottlenecks and it isn't hard at all to imagine a Zen 6 with 20-30% IPC uplift.

This thing really breaths well ..... and is very power efficient when it does so.

I am still thinking that the 285K CB 2024 (and Zen 5 with different memory speeds) is showing that bandwidth is more important in this CB than in 2023 and that 285K can move more than Zen 5 .... while Zen 5 clobbers 285K in latency to pretty much any memory.

Are these accurate conclusions?
 

inf64

Diamond Member
Mar 11, 2011
3,884
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Not sure if what he says is from rumor or talks with AMD (it which case he probably isn't supposed to be saying it) but Paul says 9900X3D and 9950X3D are to have vcache on both CCDs. Starts at correct time stamp, even with an image of cache on both.

Insane if true. 9950X is going to be an absolute unit of a CPU, especially with new RTX 5090 coming soon. Sad times for intel though, they are being relegated to bulldozer levels of performance.
 

Gideon

Golden Member
Nov 27, 2007
1,842
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1:2 memory with 7000 mt/s -> straight to the trash bin Eastern Euro reviewers are like uber-pro Intel and pro-nVidia, as usual
They mesured CL30 6000 MT/S as well. But yeah win10 is strange and their overclocking part was trash IMO (compared what scatterbencher could achieve)

Still useful as they tested heavy areas of actual games. Even if these are usually Intel favored, intel still lost heavily.
 

Glo.

Diamond Member
Apr 25, 2015
5,838
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What is most interesting to me (a non gamer) about the 9800X3D reviews is that it looks like the core architecture still has some room to grow. A few tweaks here and there to alleviate some bandwidth bottlenecks and it isn't hard at all to imagine a Zen 6 with 20-30% IPC uplift.

This thing really breaths well ..... and is very power efficient when it does so.

I am still thinking that the 285K CB 2024 (and Zen 5 with different memory speeds) is showing that bandwidth is more important in this CB than in 2023 and that 285K can move more than Zen 5 .... while Zen 5 clobbers 285K in latency to pretty much any memory.

Are these accurate conclusions?
Only possible IF Zen 6 has more memory bandwidth available.

Latency is not the limiting factor, but bandwidth starts to be.

And that will possible ONLY with new socket.
 

Gideon

Golden Member
Nov 27, 2007
1,842
4,379
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Insane if true. 9950X is going to be an absolute unit of a CPU, especially with new RTX 5090 coming soon. Sad times for intel though, they are being relegated to bulldozer levels of performance.
I really hope they do it. IMO it's the only way that makes sense.

We know these chips can clock to at least 4.5 GHz. Even more, if the stories about 9800X3D "9600 level" binning are true (and they seem to be, based on the current info from a smallish sample size).

We know from the Phoronix review, that even in production workloads, the 9800X3D outperforms the 9700X, despite the latter having a theoretical 300Mhz ST clock advantage.

2x stacked dies would remove most scheduling headaces (no stupid game bar fix needed). and 9900X3D would actually be a viable SKU.

I know of multiple developers that need max amount of cores for compiling but also like to game (some are even game developers). 9850X3D would be a perfect solution for them.
 

Timorous

Golden Member
Oct 27, 2008
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Only possible IF Zen 6 has more memory bandwidth available.

Latency is not the limiting factor, but bandwidth starts to be.

And that will possible ONLY with new socket.

The 8000 APUs support much faster ram on AM5 so I don't think it is a socket issue, just the IO die is a bit behind.

Good thing is Zen 6 is supposed to have a new IO die (possibly new packaging as well) which can improve the CCD to IO die connection as well as IO die to memory bandwidth.
 
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Ranulf

Platinum Member
Jul 18, 2001
2,575
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Framechasers cringelord heard you . It is hilarious since it's coming from a guy who is selling gaming tweaking/OC guides for the most expensive CPUs. Also he complains about something he can only detect ("AMDip") lol

View attachment 111252

The irony is he or rather the meme isn't totally wrong, it depends on the game. The fact that mr max fps Cod pro custom OC guy doesn't know there are games that really really do well with the 3d cache is hilarious all while he is an expert that charges for all his tweaks that many could do fairly easily on their own.

It is even funnier given all the dramas with CoD and the new Blops6 with matchmaking issues, server stability and performance etc.. I can't take most of these competitive shooters seriously anymore give the manipulation clearly going on in these games, especially activision blizzard. I've seen it a lot in Overwatch "2" for over a year now.
 

Josh128

Senior member
Oct 14, 2022
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Not sure if what he says is from rumor or talks with AMD (it which case he probably isn't supposed to be saying it) but Paul says 9900X3D and 9950X3D are to have vcache on both CCDs. Starts at correct time stamp, even with an image of cache on both.

I really think hes just speculating / pulling that out of his arse. Personally I think there is .001% chance that they do that...UNLESS theyve figured out a way to UNIFY both CCDs across a single huge L3 and choose to do it this gen. I think the chances are even less of that though.
 

Gideon

Golden Member
Nov 27, 2007
1,842
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I really think hes just speculating / pulling that out of his arse. Personally I think there is .001% chance that they do that...UNLESS theyve figured out a way to UNIFY both CCDs across a single huge L3 and choose to do it this gen. I think the chances are even less of that though.
Why not? They would "waste" less X3D chiplets per CPU, but they'd literally leave performance on the table. Keep the scheduling issues (that are a dealebreaker for some). And keep the 7900X3D as a zombie unsellable CPU ...

There would be nothing special in having two X3D CCDs. They've done it in servers and it would behave as any other 12/16 core AM5 part.

Unifying could make (a little) sense if the 3D part were L4, but as it is all one big shared L3, the latency from CCD1 -> X3D -> CCD2 and back would be horrible for a L3.

Not to mention unifying 2 CCDs would only help desktop chips. Going through all that trouble only minimally helping the (surely upcoming) server parts, makes even less sense.
 
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