"but it's likely that the notebook is equipped with 8 GB of hardwired DDR4 memory, and a single DDR4 SODIMM slot for further expansion. "
Yes? Was that not clear from my post? LPDDR4X is non-expandable (only soldered), DDR4 is/can be. So: while this configuration is sub-par in terms of memory speed,
at least it's expandable. As such, 8GB of DDR4 is somewhat acceptable, which 8GB of (non-expandable) LPDDR4X would not be as 8GB of shared memory is largely insufficient unless your usage is just basic desktop apps. That really shouldn't be hard to grasp.
The 442 shaders refresh now is still GCN5, albeit on 7nm and support for DDR4-3200. The memory bandwidth bump is one of the major reasons why the Vega 8 (7nm) can someone match the Vega 10 (14nm) with lesser shaders (at least in Timespy). They should've dropped in an updated Vega 10 to be a complete successor to the 3700U... or they could be planning on releasing a 4900U (4800U exists, albeit only with the Vega 8 mentioned).
There are only 8 CUs in silicon, so there won't be any higher iGPU configurations. The 4900U is all but confirmed (plenty of leaked specs and some benchmarks), and it bumps the base and boost clocks over the 4800U while keeping the iGPU configuration the same.
Btw, the main improvement for the iGPU isn't support for DDR4-3200, but LPDDR4X-4233. Laptops with the latter will dramatically outperform those with the former in any GPU-bound load.
And while it could of course be argued that another couple of CUs in silicon would be better, it would likely tip this die past a pain point for size and yields - ~150mm2 seems to be as high as manufacturers are willing to go for mass-market mobile chips, and it's obvious that this is the chief reason for the cut in CUs (with the per-CU perf increase serving to more than alleviate the loss). Still, next year's APUs with RDNA (hopefully RDNA 2, though that would be surprising) ought to further increase performance if you're still not happy.
For reference, a (possibly 25W-configured) 4800U in a Lenovo Yoga Slim 7 soundly beats the Geforce MX250 and is just ~5% behind the MX350. This is quite a lot faster than any previous Vega iGPU - at best they competed with the MX 230 in games, sometimes coming close to the MX 250 in synthetics. Of course the faster CPU also plays into this, but the net effect is nonetheless dramatically improved GPU performance.
Yeah, it must be true because you've seen it on TPU...
It's single-slot or soldered just like most if not all Swift 3 to date.
IF you need 16GB of RAM, buy a laptop with 16GB of RAM...
This is actually rather weird -
Acer's own CES press release described this model as
Acer said:
In addition to its stylish design, AMD Ryzen™ 4000 series processors bring disruptive performance powered by innovative 7 nm process technology and “Zen 2” core architecture. Paired with up to 16GB of LPDDR4x RAM, the Swift 3 (SF314-42) a powerful choice for productivity on the go
There's no way they redesigned the motherboard in three months, so something here is definitely wrong.
As for slim laptops being difficult to disassemble - not necessarily. Both in my household (one XPS 13, one Latitude 7390 2-in-1) both require nothing more than looseing a few screws and prying carefully to loosen a few clips.