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[Pemalite]

Bofferbrauer2 said:

Pemalite said:

Yeah saw those details.

At this point I am not actually worried about CPU performance or battery life in a notebook... It's integrated graphics that really needs to step it up a notch... Which is where AMD needs to start investing in RDNA2 which brings with it a plethora of efficiency gains which will benefit the low bandwidth of such devices.

I mean, I have a Ryzen 4500u and 2700u notebook and the 4500u is more than double the CPU speed, but only 50% better at graphics.

The question will be if infinity cache will be implemented into APUs. After all, the size of the cache should cause a pretty big increase in size for such small chips, and a smaller one would probably not bring very much benefit anymore. And without the infinity cache or some bolted-on fast memory chips as LLC, they are really limited by the RAM bandwidth.

Zen 4 next year should solve (well, alleviate) this problem, as it comes with DDR5, and probably also will bring some RDNA variant, which as far as I know needs a bit less bandwidth than GCN even without infinity cache already.

I expect the Infinity cache in the Zen 4 APUs to be half or a third of the size of the one in Big Navi (32 or 24 Megabyte). Less would probably not bring much benefit anymore, while more would make then too expensive for the performance gains.

My prediction for the Zen 4 APUs: 12 slightly altered RDNA2 CU with 2.1Ghz clock speed (not more CU because it will probably only support lower speed DDR5 early on, like DDR5-4800 for instance) in the 6800H and 1.8 Ghz in the 6800U; should be enough to beat Baffin (RX 560), Zen 5 (or whatever will follow after Zen 4) should increase the CU count to 14 or 16.

Infinity Cache would likely be prohibitively expensive unless AMD can justify it by unifying that cache for CPU operations in order to justify the transistor expenditure... Which isn't likely to happen in a cost sensitive product like an APU.
Then Again, Intel did just that with it's CPU's and Integrated Graphics with Iris Pro.

DDR5 isn't likely to cure our limited Ram bandwidth... Keep in mind that Dual-Channel DDR5 4800mhz is still only offering 64GB/s of bandwidth... Which not all can be dedicated to graphics, it's shared with the CPU cores and other logic as well.

In short, it will be a step up over a Radeon RX 530 or Geforce 1030 thanks to architectural efficiency gains. (I.E. Working Draw Stream Rasterization and Primitive Shaders plus improvements to Delta Colour Compression.)

It will be great for 1080P and lower gaming, but higher probably won't be viable until DDR6.