I'm wondering if this APU is going to be available on AM5, if we don't see Zen4. Kind of a transition generation.

So Zen 3, RDNA 2, PCIe 4.0, USB 4, and dual channel DDR5? That's kinda like the perfect version of the current Ryzen mobile chips.

Can we get this on laptops too please? lol

With 2 Dimm in dual(2x2x32) channels running at 6400MT, that is 102 GB/s of bandwidth. Zen3 8 core already perform well with half that bandwidth so that leave more than enough to the GPU. GPU won't bother of any increased latency the memory would give as they are already build to hide it.

That would be more bandwidth than a Geforce 1030. This should be good enough for light 1080 gaming and medium detail, if not more since RDNA2 GPU is more modern than Pascal. There are no rumours of Infinity cache, but still, RDNA2 could have more L1 and L2 depending on the final layout.


Can't wait to see the final bench. the desktop 5600G and 5700G already have impressive performance (for integrated graphic) with Vega and DDR4. This could be a game changer.

Yes please for desktop version. Have been waiting for too long to see rdna2 on APU...

i wonder how IF is coupled to ddr5 speed

It's hardly possible to buy a V2000 board still

Hm, that is definitely interesting. Hope most of this (except for the 10G PHYs I guess) carries over to next-gen mobile and desktop APUs. Would make for some very, very compelling products.

owen10578Can we get this on laptops too please? lol

That will be Rembrandt in laptops, I think.

PunkenjoyWith 2 Dimm in dual(2x2x32) channels running at 6400MT, that is 102 GB/s of bandwidth. Zen3 8 core already perform well with half that bandwidth so that leave more than enough to the GPU. GPU won't bother of any increased latency the memory would give as they are already build to hide it.

Would still be lower latency than GDDR, which can be a small benefit, though bandwidth is more important.

PunkenjoyThat would be more bandwidth than a Geforce 1030. This should be good enough for light 1080 gaming and medium detail, if not more since RDNA2 GPU is more modern than Pascal. There are no rumours of Infinity cache, but still, RDNA2 could have more L1 and L2 depending on the final layout.

RDNA1 adds a nee level of cache, a L1 that's shared in the Shader Arrays(10 CUs in 5700xt). This is kept the same in RDNA 2. The old L1 in Vega/GCN is now just L0.

For Rembrandt it appears like they are doing 2 Shaders Arrays of 6 CUs each(3 DCUs) and 2mb of L2, an increase of the 1mb in the Vega iGPUs. So a decent increase in the caches.

Nothing too big of a change though.

Would be really impressive if they could do like Apple and do a shared cache with CPU and iGPU( aka SLC/System level cache for Apple, though other blocks like neural stuff also use it), even more so if they do it with their vertical cache. It would be completely revolutionary in the mobile and integrated gpu space.
But that's just a pipe dream.

persondbWould be really impressive if they could do like Apple and do a shared cache with CPU and iGPU( aka SLC/System level cache for Apple, though other blocks like neural stuff also use it), even more so if they do it with their vertical cache. It would be completely revolutionary in the mobile and integrated gpu space.
But that's just a pipe dream.

That's what a mobile Infinity Cache would likely be, no? A large dedicated cache doesn't make much sense for a mobile iGPU considering die space costs, but if the CPU (and other blocks) could also share it? That would be easier to defend. There's a big question of size though, as even a 16MB cache would take up significant die area.

I don't think we're likely to see stacked cache in mobile yet though. That would necessitate a huge amount of "structural silicon" (i.e. spacers around the cache die) considering the size of APUs compared to a CCX, and would no doubt have some detrimental effects for already thermally constrained mobile designs.

ValantarThat's what a mobile Infinity Cache would likely be, no?

Maybe, it could just be a smaller L3 exclusive to the iGPU. Navi 24 is rumoured to have 16 mb of infinity cache, so a small 8 mb for an iGPU would be pretty helpful already.

ValantarAA large dedicated cache doesn't make much sense for a mobile iGPU considering die space costs, but if the CPU (and other blocks) could also share it? That would be easier to defend. There's a big question of size though, as even a 16MB cache would take up significant die area.

It all depends on the node, type of SRAM choosen as well as AMD desire. If you look at Apple(again), you will see that they are a shit ton of cache. 16 mb SLC(system level cache, basically a system wide L3), 16 mb of L2(12 for performance and 4 for efficiency cores) and even enormous L1 caches(320kb for performance and 192kb for efficiency cores).

So, I think that AMD could easily add something like 8 mb as infinity cache. Yes, Apple is in 5nm, but SRAM doesn't scale as logic does, in addition they are going to 6nm anyway(and have a bigger die than Cezanne despite increased density).

ValantarI don't think we're likely to see stacked cache in mobile yet though. That would necessitate a huge amount of "structural silicon" (i.e. spacers around the cache die) considering the size of APUs compared to a CCX, and would no doubt have some detrimental effects for already thermally constrained mobile designs.

Probably not since they grind those dies so that they end up with the same height, plus structural silicon might even help with spreading more of the heat.

In addition, could actually reduce power consumption as the part which consumes the most is the data transmission, while processing it is cheap. If you remember Broadwell, it was pretty good in energy consumption and it could even do stuff like turn off under some circumstances.

This would really help with mobile skus. But honestly, I doubt that AMD will do it in the next 2-3 years.