AMD Strikes Back: Zen 5 CPU Architecture Changes & Chipset Differences (X870E vs. X870, B850, B840)

Watch the Extreme Overclocking of the R9 9950X: https://www.youtube.com/watch?v=pYWtP4tZe30 Watch our video with Wendell about the Intel problems: https://www.youtube.com/watch?v=oAE4NWoyMZk

Huge opportunity to release a heavily-binned 9950X and call it the 9999X

Fun fact: the collective noun for a group of Steves is a "nexus" of Steves

Being able to add full 512bit AVX without the downsides of well, literally everything, is an amazing engineering feat.

For my entire life prior to AM5 every CPU upgrade was an entire new build, and forget the component costs it takes an entire weekend to strip out the motherboard and re-manage all the cables. Upgrading to Zen5 this fall is going to feel sooo good, four screws, plop in the chip, done.

When Steve rattled off the TDP equation… I feel in love in a big nerd way! That’s awesome!

05:54 I love how he completely ignored the "AI acceleration" bs 😆

The B840 chipset name seems misleading, as the feature set in some spots places below the A620 chipset.

Welp, it seems making the switch from Intel architecture to AMD for the very first time since ye olde days of AMD Athlon was the right call for me. Not only is the 7800X3D an amazingly powerful AND power-efficient CPU for Gaming, I now also already own a motherboard with a seemingly still very high end chipset (X670E) and AM5 architecture that'll allow me to just put in a new CPU when necessary for years to come. Steve is absolutely right in saying that AMD also isn't without its darker aspects, but this is truly one of the best pro-consumer decisions a company of AMD's size has made for quite a long while, especially in the gaming segment. I've been gaming for over 30 years now, both on PC and console since the early 90s, and I've always fondly remembered the times when you bought a decent system for gaming and it was still decent 3 years later... seems like with AM5, these times might, at least for now, be kinda back again.

I’m only interested in how much the prices for the Ryzen 7000 series will drop for CPUs and 600 series motherboards. Cheers from Australia!

I'm 83% certain AMD employ literal wizards these days. Pointy hats n' everything.

About 15:35 where you mentioned that AMD and Intel architectures both have challenges when it comes to scheduling, I think that you missed the point Macri was trying to make. There is a massive difference between misscheduling on a 7900x3d and a 14900k. In the first case, you might schedule a clock-friendly task on a high-cache core or vice versa and lose a bit of performance. In the second case, if you schedule an AVX workload on an efficiency core, you get a kernel panic / BSOD. This means you can run older OSes on an x3d CPU. It might not be as good as it can be, but as a user, it will work, and as a dev, you don't have to backport complicated scheduling algorithms to older kernels still in long term support. On the hand, you absolutely have to do this for intel CPUs. They need additional dev time, and that needs to happen before release; and potentially in secret. This is why the initial launch of p/e cores was such a mess. Some apps would randomly crash on Windows, which got support early, and Linux simply didn't work for weeks because it would've leaked the IP. So, AMD doesn't require special drivers, but they do benefit from them, and drivers are the work of the hardware provider putting the onus of producing and maintaining this code on AMD. Intel requires a special scheduler, which is the responsibility of every OS provider and an additional burden on the communit in the case of Linux.

In fairness to AMD's comments on corner cases, I think they're referring specifically to the issues Alder Lake had with AVX 512 support only being available on some cores and processes freaking out if they landed on an e core by mistake. Heterogenous cores inherently have some differences in performance characteristics and will have misses in terms of scheduling but those misses (should) fail gracefully by just resulting in a bit of a performance hit instead of an outright crash

Strikes back against who? Themselves?!

For my audio production usecase i'm most excited about doubling the instruction throughput since most digital audio workstations rely directly on AVX2 instructions so this should, at least in theory, make them incredible for low latency audio processing. These seem like they're going to be absolute monsters for creative work.

“AMD X870E. The E stands for extreme. The X also probably stands for extreme” 😂 Well, at least they didn’t add an Ai in there too…

wake me when x3d comes out

19:20 Although I wouldn't be excited to see AMD lose CPU longevity, that would be an AMAZING episode 10 years from now to see this video dug up and some great content made out of it!

17:02 I'd gladly accept a platform strategy of "the socket lasts as long as the RAM generation".

it seems so easy to have multiple x16 slots with how amazing these processors have become but yet most brands are only putting one on the boards. i may have to keep my x570 boards forever.