512 * 1.75 = 896 operations // 128-bit LPDDR4-4266 => 68.3 GB/s
vs
640 * 1.4 = 896 operations // 128-bit DDR4-2400 => 38.4 GB/s
Dali appears to just be a refresh of Raven2:
https://images.anandtech.com/doci/15324/AMD CES 2020 Update_Client_Embargoed Until Jan. 6 at 6pm ET-page-028.jpg
No A-series in sight. It seems to finally be over.
Expensive exotic memory isn't mainstream. The desktop version should have higher iGPU freq that very well matches with affordable mainstream memory. Esp'ly if you consider that APUs originally were oriented towards mostly budget conscious builders.
I've kind of suspected this Raven2 (and its refresh) would be Bristol Ridge (and high bin Stoney) successors. So far 2c/2t 15w is its low bin, low end SKU. But a die salvaged 1c/2t at 6W would be a Stoney 6W done right.
Totally changing topic now to flagship 4000 mobile,
this (second picture) looks like a ballpark 200mm2 die; maybe just under. cores, uncore, and gpu each adding 60something mm2 (well 70 or 80something for the gpu maybe).
Well now i can say this is a intentional GPU downgrade? And im sorry but the "memory constrained" argument is just wrong, with my old 3200G i did some tests with a guy that had the 3400G with both at 1700mhz the 3400G was always better at 3200mhz DDR4.
Of course the 3400g will be ahead, but there are diminishing returns. This means the scaling of performance to CU count (or iGPU frequency) gets really really bad. It's hard to be 100% memory constrained, but 95% would be something like increase your CUs (or freq) by 50% and but you see only 5% to 10% performance increase (rather than a 50% performance increase that you would get if you're 0% bandwidth constrained).
It's pretty much what jpiniero says (Die size considerations & dGPU self-competition) along with the fact that this is a high end mobile oriented product.
A serious gaming laptop is going to come with a dGPU anyways. So the iGPU is there for general use and unplugged gaming only. You don't need 12CU-16CU for decent enough graphics at peak perf/watt frequencies; by having a much larger iGPU you might add wattage rather than reduce it. Also, for their smallest mobile socket, a 16CU APU might also exceed the socket size.
To target the smaller market of desktop users who want big iGPU/APUs they're better following up with Zen3 big-iGPU MCM. They can integrate a big GPU with the IO hub for MCM APUs while reusing the current GPU-less IO hub for MCM Zen3 CPUs. I don't think the Zen3 chiplet is all that far away.