Discussion Speculation: Zen 4 (EPYC 4 "Genoa", Ryzen 7000, etc.)

[Vattila]

Except for the details about the improvements in the microarchitecture, we now know pretty well what to expect with Zen 3.

The leaked presentation by AMD Senior Manager Martin Hilgeman shows that EPYC 3 "Milan" will, as promised and expected, reuse the current platform (SP3), and the system architecture and packaging looks to be the same, with the same 9-die chiplet design and the same maximum core and thread-count (no SMT-4, contrary to rumour). The biggest change revealed so far is the enlargement of the compute complex from 4 cores to 8 cores, all sharing a larger L3 cache ("32+ MB", likely to double to 64 MB, I think).

Hilgeman's slides did also show that EPYC 4 "Genoa" is in the definition phase (or was at the time of the presentation in September, at least), and will come with a new platform (SP5), with new memory support (likely DDR5).

What else do you think we will see with Zen 4? PCI-Express 5 support? Increased core-count? 4-way SMT? New packaging (interposer, 2.5D, 3D)? Integrated memory on package (HBM)?

Vote in the poll and share your thoughts!

 

[nicalandia]

Sisoftware Results for AMD 7900X..

Details for Result ID AMD Ryzen 9 7900X 12-Core Processor (2M 12C 24T 5.62GHz, 1.87GHz IMC, 12x 1MB L2, 2x 32MB L3)

ranker.sisoftware.co.uk

For comparison with others.



50%+ on Dhrystone Performance when comoared to the 5900X.. Thats Mighty Impressive.

 

[Abwx]

32% for double precision FP and about 50% for the rest, look like Integer was given a lot of care, wich is logical for a server dedicated uarch.

 

[igor_kavinski]

50%+ on Dhrystone Performance when comoared to the 5900X.. Thats Mighty Impressive.

Wow. That's a monster integer unit!

 

[inf64]

I like this part the most



Not a bad feat, beating 100% of scores on sisoft database lol

 

[Tuna-Fish]

Is this MB for You?

https://twitter.com/x/status/1569844805299052544

How is this done? 2 from the dedicated link, and then 2 split off from the GPU link, leaving 8x for the gpu?

For real, though, I really wish someone would make a good PCIe 5.0 switch that's cheap enough to use for consumer motherboards. Something like 4x 5.0 -> 3* 4x 5.0 would be ideal. No consumer really needs all the PCI slots to work at the same time, they just need very fast access to any one of the devices at one time. The entire PCIe switch market seems to now be catering to server customers, with higher-capacity but also much higher cost products.

 

[Det0x]

Visualized:
View attachment 67495

Higher efficiency, higher base clock, maybe AVX512 although that's running at half speed.

We need your chart making skills again

Details for Result ID AMD Ryzen 9 7900X 12-Core Processor (2M 12C 24T 5.62GHz, 1.87GHz IMC, 12x 1MB L2, 2x 32MB L3)

ranker.sisoftware.co.uk

 

[nicalandia]

We need your chart making skills again

Details for Result ID AMD Ryzen 9 7900X 12-Core Processor (2M 12C 24T 5.62GHz, 1.87GHz IMC, 12x 1MB L2, 2x 32MB L3)

ranker.sisoftware.co.uk

I've been waiting on his lazy self for what it seems to be an eternity,(After he liked the post)



would have done it myself but I am on my phone.

 

[Timmah!]

I like this part the most

View attachment 67534

Not a bad feat, beating 100% of scores on sisoft database lol

Since its ranked third, how does it beat 100 percent of other results? Some dark sorcery this

 

[eek2121]

We will send help in the form of PCIe 5.0 NVMe drives. Well not really, that would cost money . . .

Imagine RAID-0 with PCIE gen 5 drives. You know someone will do it, because why not?

 

[DisEnchantment]

would have done it myself but I am on my phone.

I took the liberty to make the charts ... in marketing style. Unquestioned leadership by 7900X

 

[nicalandia]

View attachment 67539
I took the liberty to make the charts ... in marketing style. Unquestioned leadership by 7900X

Thanks..

I appreciate the effort.....

But, I prefer the original look.

Here is the best I could come up with.

 

[Det0x]

Another AMD Marketing Devices leak from Userbbbbbenchmark...

https://twitter.com/x/status/1569871008227815424

View attachment 67518

UserBenchmark be like: !!!!111

https://twitter.com/x/status/1569970503712120834

 

[nicalandia]

Okay, took my time and did a better Graphic Chart, comparing the 7900X vs the 5900X, 12900K and 5950X...



That beast is an Integer Monster.... It matches the 5950X in FP, but its much superior Integer Operations.


Thread for Thread Ryzen 7000 is stronger than Alder Lake(24T 7900X vs 27T 12900K) in Sisoftsandra

 

[TESKATLIPOKA]

Okay, took my time and did a better Graphic Chart, comparing the 7900X vs the 5900X, 12900K and 5950X...

View attachment 67556

That beast is an Integer Monster.... It matches the 5950X in FP, but its much superior Integer Operations.


Thread for Thread Ryzen 7000 is stronger than Alder Lake(24T 7900X vs 27T 12900K) in Sisoftsandra

I find comparing It to 5900x the most interesting.

	R9 5900x	R9 7900x	Difference in %
Whetstone Double	324	429	32.4 %
Whetstone Single	388	517	33.2 %
Dhrystone Long	594	919	54.7 %
Dhrystone Int	589	886	50.4 %

edit: added %

 

[Kaluan]

Okay, took my time and did a better Graphic Chart, comparing the 7900X vs the 5900X, 12900K and 5950X...

View attachment 67556

That beast is an Integer Monster.... It matches the 5950X in FP, but its much superior Integer Operations.


Thread for Thread Ryzen 7000 is stronger than Alder Lake(24T 7900X vs 27T 12900K) in Sisoftsandra

I find comparing It to 5900x the most interesting.

	R9 5900x	R9 7900x	Difference
Whetstone Double	324	429	32.4
Whetstone Single	388	517	33.2
Dhrystone Long	594	919	54.7
Dhrystone Int	589	886	50.4

Based on this data, asuming 7900X to 7950X performance scaling (same TDPs on both Ryzen 9s within their generations) is similar to 5900X to 5950X (29,5-34% faster), the 7950X should score roughly:

- 570 in Whetstone Double
- 690 in Whetstone Single
- 1220 in Dhrystone Long
- 1150 in Dhrystone Int

I could be very off mark, or maybe right on it, IDK if I'm missing something. Was about to ask if someone has a chart with both 5900X AND 5950X on it for this purpose then @nicalandia delivered even before I had a chance to ask haha

 

[Makaveli]

Imagine RAID-0 with PCIE gen 5 drives. You know someone will do it, because why not?

lol you know someone will then they won't actually have a destination drive capable of writing at 20+ gb/s but you know bragging rights.

 

[maddogmcgee]

I know this is a CPU thread and not a GPU one, but i thought I would post this as it looks like User Benchmark has applied the CPU scoring system for the GPU section as well.

 

[inf64]

TUM Apisak found 7700X on sisoft website :

https://twitter.com/x/status/1570274224371277830

Not as impressive as 7900X but still massive jump in performance Vs 5800X. Excluding doubling of cores in Zen 2, this is the largest Zen gen on gen improvement to date.

 

[igor_kavinski]

Imagine RAID-0 with PCIE gen 5 drives. You know someone will do it, because why not?

Yeah. Someone will do it. Someone who has too much money to burn or someone who is dumb enough not to realize that the faster they can write to the SSD, the faster it degrades and approaches EOL.

 

[DisEnchantment]

Someone who has too much money to burn or someone who is dumb enough not to realize that the faster they can write to the SSD, the faster it degrades and approaches EOL.

So in other words the average Linux kernel developer or distro maintainer or Android System Developer (e.g. GKH/Linus Torvards, Android folks) is dumb and stupid and read and writes millions of files to the SSD day in day out. They should go back to spinning disks.

 

[igor_kavinski]

So in other words the average Linux kernel developer or distro maintainer or Android System Developer (e.g. GKH/Linus Torvards, Android folks) is dumb and stupid and read and writes millions of files to the SSD day in day out. They should go back to spinning disks.

I was replying about PCIe 5.0 RAID-0. Shouldn't developer workloads involve more random I/O than sequential I/O (which is what PCIe 5.0 mainly improves)? Please correct me if I'm wrong.

 

[igor_kavinski]

Linus Torvards

He most likely has a P5800X drive

 

[DisEnchantment]

I was replying about PCIe 5.0 RAID-0. Shouldn't developer workloads involve more random I/O than sequential I/O (which is what PCIe 5.0 mainly improves)? Please correct me if I'm wrong.

https://www.researchgate.net/figure/Average-random-write-IOPS-in-RAID-0-configurations-with-a-spare-capacity-of-77-on_fig1_221351921

Average perf in RAID 0 configs, disk stats and preconditions you can check link.

 

[Hans de Vries]

Generational improvements (Older results are all from SiSoft Sandra articles)
Still waiting for the Ryzen 9 7950X...


Made with Excel (plus some image editing)

 

[nicalandia]

Generational improvements (Older results are all from SiSoft Sandra articles)
Still waiting for the Ryzen 9 7950X...

View attachment 67589
Made with Excel (plus some image editing)

So I wake up and its the first thing I see posted on My Twitter Feed...



Thanks...