For those of you who, like me, are unnaturally interested in this kind of thing, I made a chart illustrating how complex Apple's choice for APU in their upcoming 13/14" Macbook Pro is. This compares the theoretical performance of Intel's upcoming four core Ice Lake part (i7-1068G7) @ 28W with the theoretical performance of AMD's six core Renoir part (4900U) @ 25W and the actual performance of Intel's current six core Comet Lake part (i7-10710U) @ 25W.
| Best Performance | Good Performance | Weakest Performance |
All Core Performance | AMD 4900U > i7-10710U | i7-1068G7 | |
Single Core Performance | i7-1068G7 | i7-10710U | AMD 4900U |
Graphics Perfomance | AMD 4900U | i7-1068G7 | i7-10710U |
I drew inferences from available benchmarks on notebookcheck and AMD and Intel's own estimates. I especially relied on these leaked benchmarks, which test the AMD 4800U (@ 25W), i7-1065G7 (@ 25W), and i7-10710U (@ 25W):
My takeaways: the CPU Physics score for AMD's Ryzen 9 4800U (Renoir) is neck-and-neck with the Intel Core i7-10710U (Comet Lake) with both configured at 25W. Presumably, the 4900U at 25W would widen the gap--
slightly--thanks to its marginally higher clock speed, but I don't think the gap is significant
Single core performance at these power levels is still worrying for AMD. Direct comparison is impossible, since AMD's four-and-six core parts are configured lower TDPs. But the six core i7-10710U's near parity with a similarly configured eight core 4800U in a CPU Physics test is troubling.
The Ice Lake i7-1065G7, configured at 25W, puts up an impressive performance, but it is really held back by the low core count. Intel's inability to manufacture their new Cove cores in higher-core configurations is a problem, and sadly this problem may continue with Tiger Lake. The 28W 1068 is set to use an identical graphics part as the 1065G7, and I expect the benefit of the extra power to go to the CPU.
For graphics, AMD's Vega 8 will doubtlessly trounce the UHD 620 in the Comet Lake part. The Iris Plus graphics in Ice Lake are a big step forward for Intel, and have demonstrated a narrow advantage over the Vega 10 part on Raven Ridge.
My biggest assumption in this chart is taking AMD at their word that uplift from manufacturing Vega 8 at 7nm puts the Renoir iteration significantly ahead of the Vega 10 part on Raven Ridge despite it having less CUs. If this turns out to be untrue, then Ice Lake would share the "Best Performance" GPU tier with Renoir (the gap between these parts and Comet Lake should remain). The assumption that Vega 8 at 7nm would hold a significant performance advantage over Intel's Iris Plus graphics
appears to be borne out in the same benchmarks.