AMD to unveil Zen 4 CPUs at CES 2022

humbug · 17 Feb 2022 at 18:47

Grim5 said:
mine only runs at 3.6-3.7ghz in cinebench r23, what gives? Score is 24k

That's well under, you should be scoring about 27.5K, maybe something in your BIOS? have you tried resetting it?

humbug · 17 Feb 2022 at 19:03

This is a little on the high side, they do vary, if you're getting over 27K its about right. Tuned they can go all the way up to 32K.

Curlyriff · 17 Feb 2022 at 20:10

Grim5 said:
How do you get 4.2ghz? When I run CBR23 its 3.6-3.7ghz and pulling 120-130w. Only when I enable PBO does it go up to 4.45ghz

No idea. Default is 4.2Ghz, PBO is 4.45Ghz, overclocked is 4.6Ghz. That's running CB23. I have played about for a while on and off.

It puts 140w at 4.2Ghz, 160w at 4.45Ghz and 185w at 4.6Ghz approx with it sitting around 1.35v. Can't do anything beyond 4.6Ghz without it blackscreen though even if I try one CCX set like someone suggested other day.

five8five · 18 Feb 2022 at 10:33

humbug said:
AMD don't publish fixed boost clocks because there are none, they are not fixed clock CPU's.

Yeah, I couldn't find anything. I was thinking more along lines of an "at least" max all-core clock seeing as the 5950X is listed as having a base clock of 3.4 and a max boost clock of up to 4.9. It means above the base clock it's incredibly vague.

The Zen 4 10% clock increase must be related to the base clock so the the 5950X replacement should have an approx base clock of 3.7 with an upward bump of the "up to max boost" clock.

five8five · 18 Feb 2022 at 10:47

Grim5 said:
mine only runs at 3.6-3.7ghz in cinebench r23, what gives? Score is 24k

Looking at the R23 thread there are scores in the 24 to 25k range so it's not incredibly low.
I think I've seen you have water cooling so is it just down to the silicon lottery?

Audioboxer · 21 Feb 2022 at 15:34

Grim5 said:
mine only runs at 3.6-3.7ghz in cinebench r23, what gives? Score is 24k

CB23 is super temp sensitive, what are your temps? PBO is also needed to push the higher scores, along with a good curve in the curve optimiser

That's with PBO at 270/168/220 and it's not even the highest out there. 32k has been broken on a 5950x. 33k might even have as well with extreme cooling.

But yeah, you could literally open your window in winter, drop your ambient a few degrees and then see +500 in CB23 lol.

Grim5 · 21 Feb 2022 at 20:22

Audioboxer said:
CB23 is super temp sensitive, what are your temps? PBO is also needed to push the higher scores, along with a good curve in the curve optimiser

That's with PBO at 270/168/220 and it's not even the highest out there. 32k has been broken on a 5950x. 33k might even have as well with extreme cooling.

But yeah, you could literally open your window in winter, drop your ambient a few degrees and then see +500 in CB23 lol.

80c in r23 when stock (HWinfo shows 130-140watts)

82c in r23 with pbo (HWinfo shows 230-260watts)

Audioboxer · 21 Feb 2022 at 20:58

Grim5 said:
80c in r23 when stock (HWinfo shows 130-140watts)

82c in r23 with pbo (HWinfo shows 230-260watts)

Air-cooling? Not too bad temp wise.

Have you got a curve setup with curve optimiser? A lot of performance can come from it. It results in the cores boosting higher.

You should definitely be able to squeeze over 30k with PBO, a curve and those temps with a 5950x.

At least 29xxx if anything else.

Grim5 · 21 Feb 2022 at 21:15

Audioboxer said:
Air-cooling? Not too bad temp wise.

Have you got a curve setup with curve optimiser? A lot of performance can come from it. It results in the cores boosting higher.

You should definitely be able to squeeze over 30k with PBO, a curve and those temps with a 5950x.

At least 29xxx if anything else.

Custom water loop but it's middle of summer with 28-31c temps. CPU temps will be 10c lower in Winter. Nah it's just auto or stock on everything. Tried curve optimizer a couple times but doing any negative offset results in crashes

Audioboxer · 21 Feb 2022 at 21:35

Grim5 said:
Custom water loop but it's middle of summer with 28-31c temps. CPU temps will be 10c lower in Winter. Nah it's just auto or stock on everything. Tried curve optimizer a couple times but doing any negative offset results in crashes

Ah, it'll be not using curve optimizer then, a lot of performance comes from that.

If you ever feel like trying again this will help https://github.com/sp00n/corecycler/releases

It's a slow process but worth it in the end. The above tests the cores on a cycle and will report any that crash.

Unfortunately all core undervolts at big numbers never work. People who say things like -30 all core stable are talking nonsense. Per core is the way to do it, unless you want to start with a -10 all core and see what cores crash.

My lowest core is -1 and my highest -30. Your 4 best cores will likely be somewhere between -1 and -20. The rest probably -20 to -30, a good few possibly hitting -30.

five8five · 24 Mar 2022 at 21:50

AMD Ryzen 7000 Zen4 “Raphael” desktop 170W SKU rumored to feature 16 cores

The latest rumors suggest that the top 16-core configuration might require up to 170W of power.

https://videocardz.com/newz/amd-ryzen-7000-zen4-raphael-desktop-170w-sku-rumored-to-feature-16-cores

Is AMD developing this CPU in partnership with another company? Nvidia?

Grim5 · 24 Mar 2022 at 21:52

five8five said:
AMD Ryzen 7000 Zen4 “Raphael” desktop 170W SKU rumored to feature 16 cores

The latest rumors suggest that the top 16-core configuration might require up to 170W of power.

https://videocardz.com/newz/amd-ryzen-7000-zen4-raphael-desktop-170w-sku-rumored-to-feature-16-cores

Are AMD developing this CPU in partnership with another company? Nvidia?

You know how with the 5950x it says 105w but actually in certain loads it will reach 140w, well for Zen 4 it's 170w TDP and under certain loads it goes up to 230w - 230watts for a stock 6950x!

AMD is quickly catching up to Intel's Wattage

Vulture · 24 Mar 2022 at 22:12

Grim5 said:
You know how with the 5950x it says 105w but actually in certain loads it will reach 140w, well for Zen 4 it's 170w TDP and under certain loads it goes up to 230w - 230watts for a stock 6950x!

AMD is quickly catching up to Intel's Wattage

With superior node on that wattage performance should be extremely good. That wattage alone doesn't tell us anything about efficiency, we have yet to see performance and how it scales with power consumption.

humbug · 24 Mar 2022 at 22:47

five8five said:
AMD Ryzen 7000 Zen4 “Raphael” desktop 170W SKU rumored to feature 16 cores

The latest rumors suggest that the top 16-core configuration might require up to 170W of power.

https://videocardz.com/newz/amd-ryzen-7000-zen4-raphael-desktop-170w-sku-rumored-to-feature-16-cores

Is AMD developing this CPU in partnership with another company? Nvidia?

As @Grim5 said, taking a leaf out of Intel's book and pushing them harder, Intel normalised 250 watts for CPU's so i don't think 170 watts is at all drastic, there is a lot more room there.

Harlequin · 24 Mar 2022 at 22:47

Meanwhile the current i7 12700k goes to 190w, and isnt 16 cores...

tdp is meaningless.

Joxeon · 24 Mar 2022 at 23:25

I wonder if AMD are planning to stick Vcache on the 7950X while maintaining high clock speed which is why the power draw is much higher than the 12 core.

humbug · 25 Mar 2022 at 13:40

Audioboxer said:
Ah, it'll be not using curve optimizer then, a lot of performance comes from that.

If you ever feel like trying again this will help https://github.com/sp00n/corecycler/releases

It's a slow process but worth it in the end. The above tests the cores on a cycle and will report any that crash.

Unfortunately all core undervolts at big numbers never work. People who say things like -30 all core stable are talking nonsense. Per core is the way to do it, unless you want to start with a -10 all core and see what cores crash.

My lowest core is -1 and my highest -30. Your 4 best cores will likely be somewhere between -1 and -20. The rest probably -20 to -30, a good few possibly hitting -30.

Oh that's a good app, i'm still running it but already found something quite interesting.

Core 0: 1.38v, 4.9Ghz, 65c
Core 7: 1.46v, 4.7Ghz, 75c

Edit: using HWInfo64 to monitor.

KompuKare · 25 Mar 2022 at 13:46

Gondar said:
With superior node on that wattage performance should be extremely good. That wattage alone doesn't tell us anything about efficiency, we have yet to see performance and how it scales with power consumption.

Maybe. But if the sweet point of 5nm is, say, 1.00V and 4.5GHz and they want to run it at 1.25V and get 4.7GHz then that is not a good thing.
Or even worse, say at 1.00V 5nm gets 4.9Ghz and uses 65W, while at 1.25V it gets 5.0GHz but uses 170W. Crazy stuff like that is possible.

HACO · 25 Mar 2022 at 14:01

I do hope AMD continues their lower wattage SKUs with Zen 4 as well. Top-tier SKUs can and should be pushed for maximum performance though.

humbug · 25 Mar 2022 at 14:06

KompuKare said:
Maybe. But if the sweet point of 5nm is, say, 1.00V and 4.5GHz and they want to run it at 1.25V and get 4.7GHz then that is not a good thing.
Or even worse, say at 1.00V 5nm gets 4.9Ghz and uses 65W, while at 1.25V it gets 5.0GHz but uses 170W. Crazy stuff like that is possible.

This is what Intel have been doing for years, every time they refresh a CPU.

6700K 4.2Ghz
7700K 4.5Ghz
8700K 4.7Ghz
9900K 5.0Ghz
10900K 5.3Ghz

We are at the stage now where the 12900K peaks at 272 watts during its initial boost before gradually falling and settling at 220 watts. source Anand

No body cares, the 5950X scores 32K at about 220 Watts, even a very overclocked 12900K probably pulling way over 300 watts can't quite touch that.

Given that no one cares about power consumption any more so AMD are not going to gimp themselves, they are going to follow the trend.