That RAM speed is only 4800 MHz, that's not enough even for Rembrandt!
The highest gain is in Assassin's Creed Valhalla +23%.
The lowest gain is in Shadow of the Tomb Rider +9%.
Give them 6400MHz LPDDR5 with 33% higher BW, then we can talk how good or bad 780M is.
BTW, I wonder If this is really a proper comparison.
We know memory is slow and likely with bad timings, but 680M has only 2200MHz and 780M has 2800MHz clock speed.
I don't think they have the same TDP limit.
AFAIK Phoenix also supports LPDDR5X-7500, some announced handhelds seemingly come with it, no idea on ultraportable laptops yet tho.
Judging by the frametime graph in those tests, which look way more spiky than 680M/RDNA2's.... 780M/iGPU RDNA3 is clearly still on early drivers in all these tests.
Also NBC's review is laughable. Only interesting tidbit is the Port Royal test (hybrid/ray tracing), where it's over 50% faster than last gen.
Seem the wait for fully fleshed out drivers and reviews of Phoenix IGP is still ongoing.
Here's 680M w/ DDR5-4800 vs LPDDR5-6400:
And we're supposed to believe it matters LESS for 780M, when it's not even using natively supported 5600 in all of these so called reviews, let alone LPDDR5 or 5X. lol