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?

I'm getting frustrated with my 1050ti. I can't play Hearthstone on one monitor while watching video on the other without stuttering. I really need a 3050ti in my life.

I think the most demanding games I have are The Witcher 3, GTA V and Shadow of the Tomb Raider. They all run fine with my i5-4670k and a GTX 1070 at 1440p.

Thanks for asking.

Are you people telling me I don't need a 5950x to play games?

/s

Witcher 3 is 5~ years old, GTA 5 is 7 years old, Shadow of the Tomb Raider is a couple years old.
Not surprising they run well... Haswell still sticking in there I see. Are you running it at stock or overclocked?

Kinda flies in the face of console gamers who assert that you need to upgrade every 6 months...

Looks like I'm not the only one here with a 1050Ti

And yeah, those start to get really slow. In mobile GPUs, the MX450 already comes awfully close to the 1050Ti, only getting hampered by the slower and less memory. And Zen 4 APUs should also not be far off anymore

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.

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

Still using a quadcore (7700HQ) - but most of my games are either oldies or the are indies, so the quadcore is sufficient for me most of the time.

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). 

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.

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.

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.

I wonder why you measure with dual channel DDR5-4000 as if that were the limit. Did mix up the speeds with those from DDR4X? After all, DDR5 is supposed to start at 4800, and go all the way to 6400 - for now (higher speeds are planned for later by JEDEC). By that point, you have 51.2GB/s per channel, or 102.4GB/s on a standard dual channel board, quite a bit more than just 64GB/s. Unless you meant on a single channel, which will certainly be possible shortly before DDR6 comes along...

Of course, that would still just be half of the bandwidth of the RX 470. However, the RX 470 gets beaten in performance by the RX 5300XT despite the latter only having 112GB/s. So either the bandwidth of the RX 470 was oversized, or RDNA needs much less of it than GCN4 to push pixels around.

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