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!

 

[DAPUNISHER]

7950X is the top selling CPU on Amazon U.S. already, despite the mark up. 7900X is in the 6 spot.

Newegg doesn't seem to update the list as often. But the 7950X is in stock as of this posting at MSRP. In fact all 4 are in stock at MSRP.

 

[Timorous]

That could overshadow the RX 7000 launch on that day. I'd expect AMD to keep the dates separate for maximum publicity impact.

They can do a '1 more thing' at the end and show off something like they did for RDNA2 at the end of the Zen 3 announcement.

EDIT: Alternatively they can release something as a spoiler to the RPL launch on Oct 20th.

 

[inf64]

Found an interesting review of 7900X in which they tested all chips OCed to the max in gaming workloads: https://www.benchmark.pl/testy_i_recenzje/amd-ryzen-9-7900x-test-procesora.html#testy_gry_oc

7900X @ 5.2Gz is on top of the charts, overtaking the OCed 7600X @ 5.5Ghz. Impressive stuff. When OCed, power draw is slightly worse than 5900X.

 

[eek2121]

Only a couple of points. AMD and newegg had the CPUs @MSRP @ 6:00am PDT. Motherboard also were at newegg in abundance from $300 on up. FOR MOST OF THE DAY !

Edit: NOTE... when Zen 3 came out I waited 6 months to get a 5950x at any price. And motherboards ? who cares if you can't get a CPU, today I got 2 !
And memory ? I have a good 32 gig kit and a good 64 gig kit, both low CAS. EXPO ? I will let you know how mine work, it will be a few days, as I don't have a microcenter near, as Adam did ,and he is up already. Oh, and they still have 25 of them by his house@MSRP. I know everybody is not so lucky, but I say AMD did pretty damn good this time.

Edit2 Its now at MSRP at B&H photo, and in stock.

Mark, the issue is the types and prices of motherboards. I don't necessarily have an issue with price, though many here do, however the prices are up there for launch day boards. Note that only one Micro ATX and NO Mini ITX boards are available at launch. Also note that Amazon (in the US) has completely skipped this launch, with only a third-party reseller selling the 7950x. This is likely the fault of AMD.

CPU availability was the only thing AMD got right. I'm also hearing not so great things about bios stability, which was also an issue with Zen 3...

 

[DAPUNISHER]

Also note that Amazon (in the US) has completely skipped this launch, with only a third-party reseller selling the 7950x. This is likely the fault of AMD.

That is incorrect. It is in stock shipped and sold by Amazon right this moment.

 

[DAPUNISHER]

I also see 4 boards from $245 to $290 on Newegg. It is a very expected early adopter tax. Some of you act like you need a fainting couch.

 

[Abwx]

They should release 65W capped 7600/7700 for the general user, even if locked for OC, at this power the devices retain most of the MT perf even with an average cooling apparatus, and that s a much bigger market than the current enthusiasts dedicated SKUs.

Also, that would be on point with the B650/650E cheaper MBs..

 

[Kepler_L2]

They can do a '1 more thing' at the end and show off something like they did for RDNA2 at the end of the Zen 3 announcement.

EDIT: Alternatively they can release something as a spoiler to the RPL launch on Oct 20th.

The "one more thing" will be V-Cache but not for CPUs

 

[Timorous]

The "one more thing" will be V-Cache but not for CPUs

Why not both.

1 more thing, here is our v-cache CPU runing a v-cache GPU because we heard you like cache and you know we really really like $$.

 

[inf64]

Ryzen 7000 is on Passmark website now :

ST (7950X tied for the 2nd place, 8.9% behind 13900K) https://www.cpubenchmark.net/singleThread.html
MT ( 7950X is ~20% faster in MT score than 13900K) : https://www.cpubenchmark.net/high_end_cpus.html

7950X Vs 13900K comparison: https://www.cpubenchmark.net/compare/AMD-Ryzen-9-7950X-vs-Intel-i9-13900K/5031vs5022
7900X vs 12900KS (basically 13700K): https://www.cpubenchmark.net/compare/AMD-Ryzen-9-7900X-vs-Intel-i9-12900KS/5027vs4813

7900X should be ahead of 13700K across the board, as is the case versus 12900KS.

AMD claimed ~5% IPC jump in their official slide but the results are showing around 9% IPC increase. Not bad for a benchmark that is on the lower end of the IPC uplift scale.

 

[moinmoin]

They can do a '1 more thing' at the end and show off something like they did for RDNA2 at the end of the Zen 3 announcement.

I guess the CPU counterpart to showing a random game playing seemingly smoothly without any info like fps would amount to Su holding a delidded package into the camera once more.

 

[Kocicak]

AM5 motherboards are nowhere to be found here. What is the availability elsewhere?

 

[inf64]

AM5 motherboards are nowhere to be found here. What is the availability elsewhere?

Mindfactory has X670 boards in stock, but prices are high. Similar case with Geizhlas

 

[In2Photos]

AM5 motherboards are nowhere to be found here. What is the availability elsewhere?

Available in the US at several places. Newegg for example.

AM5,In Stock AMD Motherboards | Newegg.com

Shop AM5,In Stock AMD Motherboards on Newegg.com. Watch for amazing deals and get great pricing.

www.newegg.com

 

[Det0x]

AM5 motherboards are nowhere to be found here. What is the availability elsewhere?

The only stock available in Norway's biggest etaller is Asus

 

[inf64]

UB now and then:

Pre-release numbers for 7600X:

archive.ph

Post-release:

Please click the green human to continue - UserBenchmark

Just pathetic. 1 core result is now suddenly 20% lower, 2 core is 9% lower. 4 core is 16% lower etc. The guy has edited out all the scores, most likely simply applied some correction factor to the results or updated the benchmark suit....

 

[Shivansps]

edited

 

[Tuna-Fish]

Just pathetic. 1 core result is now suddenly 20% lower, 2 core is 9% lower. 4 core is 16% lower etc. The guy has edited out all the scores, most likely simply applied some correction factor to the results or updated the benchmark suit....

What he does is changes the weights on the benchmark suite that already exists. He does this every single time either AMD or Intel release something.

 

[Kocicak]

I would like to know, how many threads of Cinebench R23 you can run on 7950X with 40 USD air coller (as ARCTIC Freezer 34 eSports Edition), without the CPU hitting 95°C and throttling, and what is the score. This cooler should have cca 160W cooling capacity.

 

[inf64]

What he does is changes the weights on the benchmark suite that already exists. He does this every single time either AMD or Intel release something.

That guy is something "special". The amount of butthurt in the "summary" for any Ryzen part is crazy. He also mentions Radeon a lot, so he really hates AMD with every fiber of his being

 

[inf64]

I would like to know, how many threads of Cinebench R23 you can run on 7950X with 40 USD air coller (as ARCTIC Freezer 34 eSports Edition), without the CPU hitting 95°C and throttling, and what is the score. This cooler should have cca 160W cooling capacity.

The CPU will always hit 95C and limit the clock to maintain 95C at all times as power draw goes higher (unless you manually lower the number in bios). As to what clocks can you get with the mentioned cooler, I have no clue. My guess is that it should be somewhat lower than AIOs which AMD recommends (they do not recommend air coolers for 79xx).

 

[moinmoin]

Mindfactory has X670 boards in stock, but prices are high. Similar case with Geizhlas

There is a better overview when just listing all AM5 boards. Availability is fine indeed, but those prices... I sure hope there will be cheaper one soon.

 

[Gideon]

Pretty cool PBO2 optimizing video from Optimum Tech:

 

[In2Photos]

Pretty cool PBO2 optimizing video from Optimum Tech:

I was 1 click away from posting the same thing.

 

[Asterox]

Pretty cool PBO2 optimizing video from Optimum Tech:

It is not just cool, it's the most useful tip to date+implementation is not complicated.