Well, the you've got the basic reasoning down, I'll grant you that, and you're justified to have made the choice you did.
But, there's some things I want to point out. Firstly
I discard anything in between because who knows what's logical threads and what's single thread?
Schedulers always prioritize physical cores over logical cores. When it says single core - it means single thread, and that single thread will - for the most part - be running on a single physical core, provided the user isn't performing a different heavy load in the background.
The 4800U gets 138 points in ST and 1074 points in MT. Do you really believe the 1065G7 is only 10% faster in ST compared to 3700U? The compared Icelake system is underperforming. The ~30% difference approximates the high end of the single threaded difference we see with real world systems.
Than the 4800U you mean? Because the average 3700U is listed as being 44% slower than the 1065G7 and the best performing ones are 31% slower.
See:
https://cpu.userbenchmark.com/Compare/Intel-Core-i7-1065G7-vs-AMD-Ryzen-7-3700U/m888368vsm765724
If we're talking the 4800U, then yes, I do believe the 4800U will be at worst 10% slower on a single thread than ICL-U on two systems that allow for the same power budget etc, and let me back that up too.
Firstly, it's important to note that unlike Geekbench, Userbenchmark does actually scale quite well with extra cores. It's pretty much linear in fact, but the workload is so light it tends to exhibit greater SMT scaling than you'll often find in different tests. That's me getting off track a little, so back on track again:
Most Ryzen laptops are configured with their cTDP set between 22 and 25W. This laptop is no different, and
if you look at the chassis it appears to be in, you can be certain it's not allowed a greater power budget. It simply wouldn't be capable of cooling it.
So in any case, we have a 4800U device that is most likely configured to run at 25W and maintains near perfect scaling going from a single thread to dual threaded workload. What does that imply to you? Because to me, what it imply's is the the silicon is capable of maintaining it's 4.3GHz boost (which I'm guessing will be the same for the 4800H and 4800U - the 4800H's 4.3GHz boost was already leaked by TUM_APISAK). If nothing else, what can we most certainly agree on? That's right, that at least
one thread on the Renoir system is achieving it's maximum boost.
Now, remind me, what IPC advantage does Zen 2 claim over Skylake? That's right, about ~3%. Let's assume the cut cache on Renoir removes that advantage (remember, the vast majority of Zen 2's IPC uplift comes from the TAGE Branch Predictor - see Wikichip's article of Zen 2 from it's launch for that point).
So, what does Renoir have over the 1065G7? Well, erm, about an extra 400mhz in max turbo. What does the 1065G7 have over Renoir? Well, lets just say the full 18% IPC advantage. Knock off 10% of that advantage for the 10% higher boost clock on Renoir and
oh would you look at that, Renoir has a <10% lead. How shocking.
Now, I briefly touched upon the topic of power efficiency, and this is precisely where I want to point out neither Ice Lake nor Tiger Lake have even a dream of touching Renoir. Oh, and don't get me wrong, I don't mean
battery life, alas, it's too soon to talk about that. Power efficiency on the other hand, well I pointed out how Renoir appears to be maintaining (or extremely close to maintaining) it's maximum clocks in workloads that push two threads when provided a 25W power budget?
Well, let's take things a step further. Ice Lake is incapable of maintaining a single thread's 3.9GHz boost within a 15W power budget. With a 25W power budget, the gap between Ice Lake and Renoir will shrink when it comes to ST workloads, because, well, Renoir doesn't need that power budget. More than the RAM, or user error with Userbenchmark (as there are no 1068G7 devices that ship with single channel RAM to my knowledge and I didn't use it as a comparison point on the GPU side anyway), one of the biggest discrepancies with differing ICL-U results is actually because of this. Devices like the new Razer Blade Stealth simply cannot actually boost to their max on a single core.
On the other hand, we have Renoir. And this will be one of the biggest selling points of the chip - the sheer amount of work that Renoir will be capable of doing in limited power and thermal budget situations (read:
LAPTOPS) gives it one hell of a niche. Back when the SMT disabled 4700U leaked, I wanted to simulate Renoir's power efficiency ahead of time. Take a gander at these:
https://cdn.discordapp.com/attachme.../Screenshot_20191230-225505_Samsung_Notes.jpg
That's correct, within a simple 15.5W power budget for all 6 cores in my dirt-tier silicon bad 3600 (which is fully incapable of even a 4.1GHz all core OC even at 1.325v), each core was capable of maintaining 3.2GHz during Cinebench R20. On the other hand, we have ICL-U:
Yeah. Oh, and if you don't believe the table, then I can happily point you towards
Hardware Unboxed or alternatively
LTT tested in Blender.
Within a limited power and/or thermal budget - which is laptops as a whole in a nutshell, Renoir will outperform it's competitors. Simple as. So I wouldn't exactly call a <10% ST lead positive in any regard. Also, it'll probably the best thing since sliced bread for the -H market, imagine gaming laptops that don't throttle for once! Now that's the dream.
Well, for me personally, I'm just happy to see someone else AMD hit the mobile market hard like they will with Renoir. About darn time they had a product actually capable of competing.
PS: I dunno why you rambled about the iGPU, I only provided comparisons on the iGPU side to the 3700U and to the MX250, and it outdid both. I didn't even compare Gen 11, figured beating the MX250 was enough. And it did so on both the average and best results. And this isn't going to be Renoir's best showing on the iGPU, no that will be when LPDDR4X is in play.