Leo Says Ep. 65 - AMD Zen 4 is go, go, go

It has been some time, sorry it took so long - but today we have Episode number 65 with Leo focused on all things Zen 4 - ahead of the official launch. Let us know your views, so far, in the comments, we would love to hear. Have you already saved up for a new Zen 4 system? Or are you waiting to see how the reviews shape up first?

00:00 Start
00:31 Recap / leaks / Thoughts
02:16 Four models
02:55 Ryzen 9 7950X
03:29 What is coming / tech talk
07:45 Efficiency for desktop
08:15 CPU roadmap
08:32 New Socket AM5
09:49 EKWB Chart and heatspreader chat
10:42 Chipsets and capabilities
11:24 AMD EXPO Technology
12:01 V 12900k & Pricing
13:23 Ryzen 5 v Core i5
13:52 AMD Declaration
14:17 Leo chugs a beer and shares thoughts
15:42 AMD didnt make a big deal about / IGP
17:18 L2 cache has doubled
17:43 3D V-Cache versions
18:14 Leo is in a slightly different position …

Leos' Notes

Factor in the rumours and we have long known core counts, support for DDR5, the peculiar look of the new LGA CPU, and the fact the new AM5 socket is compatible with existing coolers.

Ryzen 9 7950X $699 16C/32T 4.5GHz, up to 5.7GHz, 80MB, 170W
Ryzen 9 7900X $549 12C/24T 4.7GHz, up to 5.6GHz, 76MB, 170W
Ryzen 7 7700X $399 8C/16T 4.5GHz, up to 5.4GHz, 40MB, 105W
Ryzen 5 7600X $299 6C/12T 4.7GHz, up to 5.3GHz, 38MB, 105W

Any comparisons between Ryzen 9 7950X and Ryzen 9 5950X use different chipsets and different RAM
Any comparisons between Zen 4 and Alder Lake ignore the imminent 13th Gen Raptor Lake
Process for chiplets down from TSMC 7nm to TSMC 5nm. IO die uses TSMC 6nm rather than Glo Flo 12nm so it's TSMC across the board.
Presumably the X670 and B650 chipsets are also made by TSMC.
DDR5 memory support only. Aim for DDR5-6000 and budget £250-£300 for a 32GB kit
AM5 uses a new LGA 1718 socket that can supply up to 230W
Ryzen 9 TDP is 170W
Supports PCIe Gen 5.0 graphics and storage
X670 Extreme, X670, B650 Extreme and B650 chipsets segmenting PCIe Gen 5 graphics and Gen 5 storage
AMD Advantage - both CPU and GPU along with Direct Access Memory

Ryzen 7000 includes a tiny RDNA 2 IGP
L2 cache has doubled from Zen 3, L1 and L3 remain the same. Cache latency is slightly slower for Zen 4 than Zen 3
Workloads that fit in the new, larger L2 should be very fast
3D V-cache versions are due to be announced at CES in January 2023

#Zen4 #AMD #Ryzen

[sabishiihito]

The closest most of us will get to having a drink with Leo at a pub and talking next gen hardware.

[paulclarke]

Leo.. you rock !! Great delivery and analysis.
What style!!

[bobsmithson]

Leo on a Sunday night - the weather just picked up too, its a sign.

[facundoorzabal]

Loved the tone, the conclusions, all of it.

[jamesmiscellaneous]

This dude always has good logic. This a good tech channel in a sea of not so good ones.

[davidgunther]

I salute you for not using the phrase "with a pinch of salt" in all of this! I get tired of hearing it in other hardware news. 😄

[AlikaTV]

Looking forward to these hitting the market and the first reviews.

[babaking]

Thanks for breaking that down for us Leo very informative.

[ibrahimtalhakaya]

Interesting to see the breakdown of performance improvement by changes in each part of the achietecture.

[johnmijo]

As long as Leo does more IPA video's, then I will watch them, thanks :)

[kravenfoxbodies]

With the road map, AMD can still keep AM4 going for people that don't switch now, and play both platforms, kind of how I take the 5800x 3D and why they didn't compare it in gaming, it can do that with DDR 4 memory to a 5950x in the right benchmark.

[mrb.]

Excellent !

A 'Leo Says' !!

Could really do with an AdoredTV commentary now to make what passes for my life complete.

[yedi]

Their pricing is pretty good specially since you're getting AVX-512 too.

[Mihke]

I think we need a beer playlist for the videos where Leo is drinking

[RobBCactive]

The chipset is from Asmedia on IIRC 28nm and is daisy chained in X670 boards.
AVX512 boosts the scores in Geekbench Crypto!
It's not using a geometric mean so the slide vs i9 is a real dig at Intel Golden Cove/Gracemont AVX512 regression.
I found some commentary suggesting the instructions will help some of Zen3 weaknesses

[petermitchell]

And cheers to you Leo. Always informative and a treat to watch.

[stopUkrainewar]

If there was a reason to be a saxon ... its to have so much class in a lil youtube video on hardware like this

[bafon]

Looking forward to see how the 7000 series performs with undervolting, and also what kind of delidding tool Der8auer comes up with :')

[treyquattro]

I did the same and put together a 5950X system about 6 months ago, knowing full well the 7000 series was due around now. It's a phenomenal system. I'll be putting a Zen4 7950X system together when the new system prices, especially DDR5 prices come down some in 12-18 months (hopefully). I also put together an Intel 12900/DDR5 system and paid over the odds for that. They're both excellent computers. I prefer the symmetric approach of AMD currently although there's rumors of them going the hybrid big.LITTLE approach too in future generations. Cheers!

[notthedroidsyourelookingfo]

5:50 small correction to "AVX has been an Intel thing": only the widest version, AVX-512, was Intel-only until now.
AMD CPUs had up to AVX2 (half the width of 512) for a good long while now.