Quote from: Hotz on December 07, 2023, 09:28:50Yeah, but to be fair AMD was also very quiet when the 780m iGPU came out. No benchmarks whatsoever from the company itself. Though the 780m was indeed not much of an improvement over the 680m.
It must be taken into account that all igpu are as fast as possible (and this is what is advertised in the press) only with the fastest possible memory. What is the fastest memory for 780M? LPDDR5 7500. And how many laptops are there in practice with such memory? In those with 2 slots, it is not there by default. It's good if there is a discrete card, but the built-in gpu is definitely slower.
Those. people don't get a reference solution at all in most laptop models if they disable dgpu (or don't have it at all) and use only igpu if there are 2 slots for memory modules, where the maximum memory frequency is 5600, not 7500. Only on this difference, the 780M loses about 25 % graphics performance.
Until they start using HBM3 in built-in cards there will be no sense. Those. I see no reason why an additional 16-24GB HBM3 cannot be soldered under vram in expensive laptops without an external video card (or with it) just for igpu operation. With VRAM speeds starting at 256GB/s, this will be a completely different level of integrated graphics performance.
Apple seems to have added a 512-bit memory controller to speed up igpu as much as possible - but what do we see in practice? But in practice, if you believe the tests in local reviews, even the M3 Max with 300GB/s of RAM according to Apple's declarations, in reality produces only a measly 120GB/s - where are the promised 250+? It is for this reason that the integrated graphics of Apple SoCs slow down very much.
It all comes down to the extremely slow RAM on Apple and even more monstrously slow on x86 - I have never seen more than 85GB/s in the best Intel solutions.
I understand when they save money on cheap laptops, but why do they save money on expensive ones on the HBM3? Increased consumption? Well, compared to 250W+ laptops with a discrete card, I don't see any problem in this. It is unlikely that the HBM3 controller built into the SoC will consume more than 30W on its own. But even 256GB/s+ speeds up igpu several times.