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*** AMD "Zen 4" thread (inc AM5/APU discussion) ***

Oops, looks like I can't post that video. Still, it's an amazing result for the 7700X (~87w, 61 degrees C under load, in the reviewers sample).

My dad will certainly be interested in keeping the CPU temps below 90 degrees!

6v1fhc.jpg


Most people don't want a CPU this good at cooking eggs.
 
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ElT said:
I noticed that, too. I find it hilarious. Especially as I'm 90% sure RDNA 3 cards will have DP2 as well.

Okay, thanks for the reply. So if I can find a motherboard with DP2.0 on it, I should be good to go. Cheers.

Separately - why is my avatar a woman? A hot one admittedly, but still...
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DP1.4 should still be enough to get you that res at 60HZ btw, just in case you can’t find a board with DP2.0.

It’s the default avatar for users with few posts.
 
It kind of looks like a PBO2 undervolt + Temp limit is the way to go, for most people on Zen 4.

I wonder if some Zen 4 CPUs can't be undervolted at all via PB02, e.g. the ones few that lose the silicon lottery?
 
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Has anyone seen this video, it's quite informative:
youtu.be

Memory LATENCY SCALING BENCHMARKS ✔️✔️

RAM TUNING IN GAMING, HOW MUCH FPS DO YOU REALLY GET??https://framechasers.org/ - Disc...
youtu.be youtu.be

He goes through what the effects of running at different latencies are (measured in Aida64) for games (generally there seems to be a few percentage points improvement for every 5ns). It could be relevant to Zen 4, if it's possible to reduce latencies below 60ns.

On Alder Lake, performance improvements in games appear to scale down to 45ns.
 
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AVX-512 for Ryzen 7000 is working in RPCS3 PS3 emulation and from what I've heard performance is great.

www.techpowerup.com

RPCS3 PlayStation 3 Emulator Updated with AVX-512 Support for AMD Zen 4

The popular PlayStation 3 emulator for PCs, RPCS3, just received a major update that lets it take advantage of the AVX-512 instruction-set on processors based on the AMD Zen 4 microarchitecture (the recently launched Ryzen 7000 series). RPCS3 emulates the PS3's CELL Broadband Engine SoC entirely...
www.techpowerup.com www.techpowerup.com

I'd love to see some benchmarks here comparing Ryzen 7000 emulation, since Ryzen can use AVX-512 to Alder and Raptor Lake, since they can't use AVX-512.

For the last couple years, Dave has been all over AVX-512, saying it's so great, right until Intel fused it off its desktop Alder Lake products. Well AVX-512 is back and I expect Dave will quickly be throwing away the 11900k for a 7950x to get that AVX-512 goodness
 
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Grim5 said:
For the last couple years, Dave has been all over AVX-512, saying it's so great, right until Intel fused it off its desktop Alder Lake products. Well AVX-512 is back and I expect Dave will quickly be throwing away the 11900k for a 7950x to get that AVX-512 goodness
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Dave will likely not bother responding, he usually doesn't when you have a good argument to make.
Looks like he's throwing away his z690 for a new motherboard already though.
 
Grim5 said:
AVX-512 for Ryzen 7000 is working in RPCS3 PS3 emulation and from what I've heard performance is great.

www.techpowerup.com

RPCS3 PlayStation 3 Emulator Updated with AVX-512 Support for AMD Zen 4

The popular PlayStation 3 emulator for PCs, RPCS3, just received a major update that lets it take advantage of the AVX-512 instruction-set on processors based on the AMD Zen 4 microarchitecture (the recently launched Ryzen 7000 series). RPCS3 emulates the PS3's CELL Broadband Engine SoC entirely...
www.techpowerup.com www.techpowerup.com

I'd love to see some benchmarks here comparing Ryzen 7000 emulation, since Ryzen can use AVX-512 to Alder and Raptor Lake, since they can't use AVX-512.

For the last couple years, Dave has been all over AVX-512, saying it's so great, right until Intel fused it off its desktop Alder Lake products. Well AVX-512 is back and I expect Dave will quickly be throwing away the 11900k for a 7950x to get that AVX-512 goodness
Click to expand...
Υeap, performance is insane, zen 4 trumps zen 3 in RPCS3

emulation-ps3.png
 
Grim5 said:
I'd love to see some benchmarks here comparing Ryzen 7000 emulation, since Ryzen can use AVX-512 to Alder and Raptor Lake, since they can't use AVX-512.
Click to expand...

Here's a cracking classic Dave quote. It's hilarious to read his hatred and vitriol to anyone who doesn't buy an Intel part, based on his lack general lack of technical knowledge and just regurgitating Intel marketing thinking it will get him ahead.

I do hope he is right though, maybe Intel are paying game developers to use AVX-512 now. :cry:

Dave2150 said:
Note to the AMD fans, frothing in anger reading this. I'm aware AVX-512 does nothing in games, but it does plenty in other software written to take advantage of it. A nice feature to have, as I'm sure Intel will pay developers to make more use of it, as it will artificially cripple AMD performance. This is much like Nvidia'a tactics, with Gameworks, RTX, DLSS. Horrible ethically, but the masses love it and buy
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I am curious and it could be because I'm big dumb dumb but... the x3D chip, the reason they seem to be so good in certain games is the amount of L3 cache is 96 MB right? If that's the case how come the other chips in Ryzen's lineup like the 7950x don't seem to boast as much of uplift when they have 64MB say compared to Intel's chips which have like 20ish mb L3 cache? Just curious.
 
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5950x and 7950x have 2x32MB spread over the 2 chiplets so will have a penalty when accessing more than 32MB. Vcache is vertical stacking so you have 32MB on the chiplet and then another 64MB above the chiplet and it’s all seen as 96MB.

As for Intel chips they are a total different design so not directly comparable but cache will still help them to a point, it’s a balancing act as you can’t just add tons of cache and call it a day it also has negatives so the engineers at Intel and AMD have to chose a design that maximises the benefits while minimising the negatives.
 
Toasty said:
5950x and 7950x have 2x32MB spread over the 2 chiplets so will have a penalty when accessing more than 32MB. Vcache is vertical stacking so you have 32MB on the chiplet and then another 64MB above the chiplet and it’s all seen as 96MB.

As for Intel chips they are a total different design so not directly comparable but cache will still help them to a point, it’s a balancing act as you can’t just add tons of cache and call it a day it also has negatives so the engineers at Intel and AMD have to chose a design that maximises the benefits while minimising the negatives.
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Mate that was a proper explain like I'm 5, thanks mate.
 
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