15-25W for this score is impressive. Configuration in the system you mean the frequency it will have or what will be the laptop it ends up in for?Is AMD releasing a 4900U? I couldn't hear anything about it in the CES event and what the specs of it might be.I don't think going 4266Mhz mem is a great idea considering the Infinity Fabric and its divider when mem frequency goes more than 3600Mhz?(was it 3600Mhz or more?) going more than that will actually make it slower.

IF clock is fully independent from memory clock in Renoir. IIRC Anandtech reports this in the link in my previous post, and it was explicitly said by AMD at launch. No 1:1/2:1 ratios here.Yes. Otherwise the GPU would need to be connected by far less efficient and much lower bandwidth PCIe. Both IF and PCIe can be used on-die (APUs and Intel CPUs), inter-die (MCM packaging, see Zen2 and KBL-G for examples) and off-die. You need some sort of link between the CPU and iGPU, obviously, and AMD uses IF. On-die IF normally doesn't get much press though, as its normally not configurable or otherwise visible to end users.

You need a link to get the iGPU and cores communicate, i thought maybe AMD didn't use IF. Anyway there's still correlation between the memory frequency and IF's speed. I don't think using 4266Mhz mem is a good thing for the CPU performance. I couldn't find some more specific stuff as for now. BTW you can have IF ticking at more than 1800Mhz. I thing the ceiling for the mem speed is 3733Mhz. that of course depends on the CPU but 1800Mhz IF is reachable especially if you use 3000 series processors. I'd assume for the 4000 series CPUS, it shouldn't be a problem achieving 1800Mhz IF.

My biggest worry is that too much of the power and silicon budget has been moved away from the graphics cores and to the CPU cores. Both previous generations of APU have been perfectly adequate in the CPU department and sorely lacking in the IGP department, ranging from inadequate (Vega3 being as useless as low-end Intel HD) to acceptable-but-underwhelming - in that 720p30 might just be attainable in current titles.



In terms of CPU performance, 15W ultraportable customers really aren't clamouring for more cores. Those products are typically not multitasking mobile workstation powerhouses, lacking RAM, screen size, and storage for many serious workloads. To date, the vast majority of 3700U flagship APUs have been either 8GB or 16GB max, with 512GB NVMe 2x and 1080p displays. They are general-purpose consumption devices that could definitely use a little more GPU power but are typically beyond the point of diminishing returns in the CPU department already.



AMD keep saying that they have added 60% more performance per CU but then have stripped away 30-40% of the CUs The fact that AMD isn't singing praises about the 3D performance of its new 7nm APUs is a pretty bad sign of things to come, especially because the 4800U is likely to command a significant price premium. I would expect the 6CU option to sell at the same pricing tier as the previous 10CU 3700U models, which sucks because the 4800U will likely be price-competing against an MX250 or even faster dGPU options. I can only hope that LPDDR4X is used to its full advantage this generation. My 2700U shipped with a 13W TDP and single-channel DDR4 2400; The only reason I bought it was good cooling (for up to 25W) and an empty DIMM slot for dual-channel.



Is it too much to ask for a 15W ultraportable that provides a meaningful IGP upgrade? The bar is SO low, I'm honestly saddened by the lack of attempts to pass it.