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Pemalite on 10 January 2021
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Bofferbrauer2 said:

Considering that Zen 3 APUs (which thankfully won't be OEM only like the Zen 2 ones) come with now 16MB of L3, I do think with a shrink to 5nm adding 16MB of infinity cache should be doable. The chip would get somewhat bigger due to the additional CU and cache, but not overly so.

A hypothetical infinity cache on a APU would likely end up being an L4 cache for all intents and purposes.

But yeah... At 5nm there is room to move, hopefully AMD doesn't blow out CU counts and instead just focuses on ramping up clocks.

Bofferbrauer2 said:

Also, I know DDDR5 ain't the cure, but it will still boost the bandwidth quite a bit. Hence why I only went with a modest increase to 12CU with Zen 4. But it will certainly help, and with the infinity cache, allow to get close to Polaris performance (as in the RX 470) in 2023-2024

It's 64GB/s of bandwidth verses 211GB/s of bandwidth, the RX470 will be able to scale better at higher resolutions when you become fillrate limited.. So that infinity cache will really need to be something substantial.
Plus the RX470 will likely have the ROP, Texture and Compute advantage as well.

In saying that... Dual Channel DDR4 3600mhz can do 57.6GB/s... Sadly laptop APU's aren't pushing that though, they stop at 51.2GB/s.


Chazore said:
Pemalite said:

I am surprised people still have quad-cores.... Honestly cannot remember in recent history using a quaddy.
Even my $800 AUD notebook has a 6-core CPU... And my phone has an 8-core chip.

Been using a 6-core or better CPU since 2010 starting with the Phenom 2 x6 1090T.

How do they handle in modern games and software?

Games like Witcher 3, old Metro games work fine for me, but games like GTA V/Ubisoft games, not so much at 1440p (though tbf, Ubisoft are hardly PC first publisher, same with R*).

Mine's OC'd to around 4.5ghz, though I could be cheeky and just crank it to 5, but I don't really feel like shortening it's lifespan just yet (despite be having a spare duplicate in another room that's yet to be opened). 

Haswell was always a good clocker, but yeah, the harder you push those chips the quicker electromigration sets in.
Probably still got a few years of life left in her still, but this won't be the same as the 8th gen in terms of transition in regards to CPU requirements, it's a big jump for the lowest common denominator.





--::{PC Gaming Master Race}::--