Speculation: Ryzen 4000 series/Zen 3

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Arzachel

Senior member
Apr 7, 2011
903
76
91
Nobody tests $700+ GPUs at 720p mate...i have not seen Techspot cracking out Quake 3 Arena for their RTX 3090 review.
Intel is around 5% ahead at 1440p and negligible at 4k due to the gpu bottleneck, there are some outliers which show a much bigger gap however.

Latency is the most important metric for improving Ryzen's gaming performance at this moment and Zen 3 should fix that.

Unlike Cinebench, 720p@360hz is an actual real world scenario if somewhat niche

Would be nice to see AMD closing the gap in high fps gaming because that's pretty much the last bastion where Intel is strictly superior.
 
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DrMrLordX

Lifer
Apr 27, 2000
21,808
11,163
136
10900K and 10700K

The 10900k can actually OC higher than 5.1 GHz with proper cooling. Most people won't go there due to the punishing power draw. It's largely academic, and it can be discussed elsewhere if people really want to get particular about it.

At this point, I do not think that AMD's apparently lackluster overclocking capabilities are really hurting the brand. Plus anyone that wants budget OC (read: 1600AF) kind of has to look to AMD.

Engineering samples have reached 4.9 GHz

Matisse can't reliably reach it's max boost speed on all cores, even with top-notch ambient cooling (read: no chillers or anything else involved). I doubt we'll see 4.9 GHz all-core from Vermeer on any SKU. Feel free to prove me wrong AMD, but I am skeptical.

I expect better clocks, an improvement in this area is mandatory. But if so, why would AMD not clock the skus as high as possible? With the allowed and possible overclock being a lone core that may go 100MHz higher?

AMD is going to continue to improve their boost algorithms to prevent most meaningful static OC from helping much. I doubt the algorithms will account for situations where extreme cooling may perfmit some static OC to be useful.

AMD Ryzen 9 5900X 12 Core & Ryzen 7 5800X 8 Core Zen 3 CPUs Could Potentially Launch As Early As October 20th

Now that's interesting. I had thought the 16c and 12c parts would launch first. Instead they appear to be reprising the Matisse launch, going for 12c and 8c (but leaving 6c for later this time around).

Unlike Cinebench, 720p@360hz is an actual real world scenario if somewhat niche

What are you talking about? People do use Cinema4D, and at least now CBR20 seems somewhat-representative of what actual Cinema4D performance will be like on a given CPU. Unlike CBR15 which wasn't representative of Cinema4D performance for quite some time (before it was finally replaced).

It also uses Embree provided by Intel . . .
 

Gideon

Golden Member
Nov 27, 2007
1,714
3,937
136
Matisse can't reliably reach it's max boost speed on all cores, even with top-notch ambient cooling (read: no chillers or anything else involved). I doubt we'll see 4.9 GHz all-core from Vermeer on any SKU. Feel free to prove me wrong AMD, but I am skeptical.
I totally agree. My point was that with per-core voltage regulation and stated engineering sample clocks it should reach ~ 4.9-5.0 on the best cores. Definitely not all cores we're lucky if all cores can sustain ~4.4 (based on the cpu-z leak I'm not sold)
 

DrMrLordX

Lifer
Apr 27, 2000
21,808
11,163
136
I totally agree. My point was that with per-core voltage regulation and stated engineering sample clocks it should reach ~ 4.9-5.0 on the best cores. Definitely not all cores we're lucky if all cores can sustain ~4.4 (based on the cpu-z leak I'm not sold)

That . . . is an interesting possibility. See one of the problems with Matisse are those nasty hotspot temps! And it's not entirely clear how those get so darn hot. For example, I can run my 3900x @ 4.6 GHz 1T all day long (CBR20), and I don't get a hotspot temp higher than maybe 45C? But if I load up all 12c @ 4375 MHz then I get individual hotspot temps of . . . well, hotter than that. I'm just going to guess 70c since i'm too lazy to run CBR20 right now.

The voltage is lower @ 4375 MHz, the clocks are lower, the chip is definitely reporting hotspot temps, but why are the individual hotspots hotter under that scenario? I know enough about thermodynamics/heat transfer to be really confused by that. It may be that the "bad" cores are hotspotting like a SoB. Too bad there's no granularity of reporting from the vast sensor network on Matisse.

Maybe I should try three instances of SuperPi 32m on three of my best cores and see what happens, but those voltages required for 4.6 GHz make me cringe a little. Apparently my 3900x is going to have to last until 2022, so I am not eagre to burn it out on experiments.

@Kuiva maa

Indeed! I really hope we see better MT improvements from retail review samples.
 

dzoni2k2

Member
Sep 30, 2009
153
198
116
ST result is undeniably strong but the MT ones (after we factor in ipc increase) reveal that for whatever reason this sample did not boost very high. Might be a cooling limitation however. We will see.

Both cooling and power limitation. Are people forgetting that Zen3 has to work on existing motherboards?
 
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NTMBK

Lifer
Nov 14, 2011
10,269
5,134
136
ST result is undeniably strong but the MT ones (after we factor in ipc increase) reveal that for whatever reason this sample did not boost very high. Might be a cooling limitation however. We will see.

It might not just be related to boost clocks:
  • With the L3 shared between 8 cores, the perf scaling from 1-8 cores will be less impressive. Single thread gets a bit boost from getting twice as much L3 cache, but multithread is still the same cache-per-core.
  • If this is on AM4 motherboards, then they might be hitting a memory bandwidth bottleneck on multithread performance.
 

uzzi38

Platinum Member
Oct 16, 2019
2,703
6,405
146
ST result is undeniably strong but the MT ones (after we factor in ipc increase) reveal that for whatever reason this sample did not boost very high. Might be a cooling limitation however. We will see.

That could be the case. It could also be that Zen 3 makes significant improvements in the core, to caches, to scheduling, prefetch, you name it, improving core effectiveness at the cost of SMT scaling.

Way too early to tell.
 

LightningZ71

Golden Member
Mar 10, 2017
1,661
1,945
136
it's too bad that there isn't some sort of mechanism where there is a temp sensor on each core that reports to an intelligent system monitor that can optimize voltage delivery and clock frequency of each core based based on each individual reading.
 

ModEl4

Member
Oct 14, 2019
71
33
61
Is this sarcasm? Are there actually people testing a 3090 with a 10900k at 720p? That is something like 1/36 of the 8k resolution that you are supposed be buying the 3090 for. What kind of frame rates are we talking there? You should not see 720p except in some cheap 13 inch laptop or something.

I am of the opinion that such low resolution test are testing raw memory latency, and that is about it. You might as well run some synthetic memory testers. Although, there is a possibility that it is partially the different cache architectures between AMD and Intel. Running through the scene data may cause the cache to cycle more in Zen 2. I think there was something about a single core only being able to access 8 MB of the 16 MB before the latency increased; I don’t have time to look that up now. AMD will certainly have worked on this in Zen 3. Even if Zen 3‘s raw latency is still higher, which I expect it will be, Zen 3 average latency due to massive cache improvements may be lower. AMD would probably be able to achieve similar raw latency with a monolithic APU, but not an MCM.
Yes, someone would buy a 3090 for 4K or 8K as you suggest, but testing at these resolutions, will only show that a 3300X has the same performance as a 10900K (-1,5% at 4K, same perf at 8K) The majority of the Tech press declared 10900K as the Gaming King and I would imagine that is based on their own experience and tests, but surely was not 4K average fps testing...
I mentioned the new GPUs mainly to highlight that 1% of the miniscule advantage Zen3 will have vs 10900K at this test, will also be due to PCI-Expess 16X gen difference.
720p testing shows some indications when GPU is not the limit and is useful if you know what to take from it (depending on the game/level used etc). Also why the argument regarding latency/cache/CCX etc, for whatever reason an architecture is better at something than another, in the end it is better. It is like saying that the Rendering superiority of the Ryzen does not count because mainly it is from SMT vs HT performance difference, does it change the outcome that Ryzen is better at Rendering? Also i would imagine that most of the game engines are more optimized for Skylake than Ryzen architecture, in the future with the new consoles and with Intel stepping away from Skylake this will change also.
 

inf64

Diamond Member
Mar 11, 2011
3,764
4,223
136
We already have websites who tested RTX 3080 from 1080p to 4K on 3900XT and OCed 10900K platforms. At lowest (1080p) OCed 10900K is around 10% faster, at 1440p it's ~7.5% faster and finally at 4K there is virtually no difference. Zen3 will have no problems offering better performance than intel parts at low(er) resolutions while most likely being GPU bound at 4K+. There will be no reason to buy intel after October 20th, unless there are supply issues on AMD side.
 

reb0rn

Senior member
Dec 31, 2009
222
58
101
It was the time for AMD after 10+ years to push IPC and clock over intel
Now we gona wait how long intel need with the tiger lake to get the desktop/server footing
 

Saylick

Diamond Member
Sep 10, 2012
3,386
7,151
136
We already have websites who tested RTX 3080 from 1080p to 4K on 3900XT and OCed 10900K platforms. At lowest (1080p) OCed 10900K is around 10% faster, at 1440p it's ~7.5% faster and finally at 4K there is virtually no difference. Zen3 will have no problems offering better performance than intel parts at low(er) resolutions while most likely being GPU bound at 4K+. There will be no reason to buy intel after October 20th, unless there are supply issues on AMD side.
This is the crux of the problem: AMD needed to have stockpiled these chips way in advance or else the demand for them will outpace supply. TSMC N7 is in high demand and pretty much every AMD product line uses it.
 

uzzi38

Platinum Member
Oct 16, 2019
2,703
6,405
146
It was the time for AMD after 10+ years to push IPC and clock over intel
Now we gona wait how long intel need with the tiger lake to get the desktop/server footing
Actually quite a big leap in IPC over Tiger Lake in this one benchmark only. 1185G7 scores approximately 600pts here, almost exactly 20% over 1065G7.
 

Zucker2k

Golden Member
Feb 15, 2006
1,810
1,159
136
That could be the case. It could also be that Zen 3 makes significant improvements in the core, to caches, to scheduling, prefetch, you name it, improving core effectiveness at the cost of SMT scaling.
I believe AMD has more dedicated resources for SMT, but could this be the symptom of a stronger core leaving lesser resources for SMT ala Intel? I can't wait to see the SMT scaling tests from The Stilt.
 

Zucker2k

Golden Member
Feb 15, 2006
1,810
1,159
136
Zen3 will have no problems offering better performance than intel parts at low(er) resolutions while most likely being GPU bound at 4K+. There will be no reason to buy intel after October 20th, unless there are supply issues on AMD side.
Wow! That's quite bold. I'll have to commend you for sticking your neck out, though.
 

eek2121

Diamond Member
Aug 2, 2005
3,051
4,276
136
Yes, someone would buy a 3090 for 4K or 8K as you suggest, but testing at these resolutions, will only show that a 3300X has the same performance as a 10900K (-1,5% at 4K, same perf at 8K) The majority of the Tech press declared 10900K as the Gaming King and I would imagine that is based on their own experience and tests, but surely was not 4K average fps testing...
I mentioned the new GPUs mainly to highlight that 1% of the miniscule advantage Zen3 will have vs 10900K at this test, will also be due to PCI-Expess 16X gen difference.
720p testing shows some indications when GPU is not the limit and is useful if you know what to take from it (depending on the game/level used etc). Also why the argument regarding latency/cache/CCX etc, for whatever reason an architecture is better at something than another, in the end it is better. It is like saying that the Rendering superiority of the Ryzen does not count because mainly it is from SMT vs HT performance difference, does it change the outcome that Ryzen is better at Rendering? Also i would imagine that most of the game engines are more optimized for Skylake than Ryzen architecture, in the future with the new consoles and with Intel stepping away from Skylake this will change also.

I game at 4K, and it isn’t uncommon to see a game using 6-8 cores.
 

Kenmitch

Diamond Member
Oct 10, 1999
8,505
2,249
136
This is the crux of the problem: AMD needed to have stockpiled these chips way in advance or else the demand for them will outpace supply. TSMC N7 is in high demand and pretty much every AMD product line uses it.

I guess it'll be a wait and see on supply vs demand. I'm still debating on upgrading myself. I guess it depends on the reviews and if Microcenter has a good bundle deal. I won't camp out for one! Hoping they'll have the usual reserve for in store pickup and a decent bundle deal. I don't need another MB, but it'll be easier to sell off the 3700x or my son's 3600 if I kick him down the 3700x.
 

Panino Manino

Senior member
Jan 28, 2017
847
1,061
136
There's no escape from this conundrum.
If Zen 3 proves to be really as good as promised by the rumors and works on current AM4 mobos than more people will rush to buy one. There's no way to supply this demand.

The best AMD can do, as I said before, is take this opportunity to extract as much money as possible from the enthusiasts while Intel can't compete.
 
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