Ryzen The Ryzen 3 Series (on Zen +) drains Intel into a clean impulse load, exactly where it is needed most - office and surfing. The memory controller in Zen + is terrible in delays, the latency is more than 115ns (Intel had so many in 2010!), Versus 70-85ns for Intel's classmates.
But that is not all. Despite the fact that Intel still officially declares shameful HDMI 1.4b in Ice Lake (in 2020, when it is already obliged to install HDMI2.1 and DP2.0, instead of DP1.4b!), And Ryzen have HDMI 2.0b from 2017, good it's not enough, because Ryzen has at least 3200U-3500U (the most popular) have bad VP9/H265 decoder at 60fps starting from 2560x1440. This is tested by me in all major browsers without exception. Chrome/FireFox/Edge (as the fastest). Even in the case of Edge, still on the old, non-Chromium fastest engine, despite the absence of drops in the YouTube statistics, it is clearly seen that there are periodic micro-freezes and picture pulling/lagging. In the last Chrome, the drops go down the ramp already in 2560x1440@60fps in VP9 codec, with allegedly working ok hardware acceleration according to the GPU statistics in W10 in Task Manager ("decode" graph is present and very load).
Moreover, the cpu part load (3500U on 11-12W TDP, due to the fact that Lenovo quietly underestimated it in the S340 series) is only 5-10% by Task Manager in W10 (at 1.4 GHz), but the load on Vega8 is monstrous and is above 65% of load on "Decode" graph! And although it does not override to 100%, there is still no smooth playback and have drops! And it with memory working in dual-channel mode (4 + 4GB)!
Even an attempt to play the well-known demos in 4k@60fps with HDR in H265 in MPC-BE through the MPC-BE built-in converter from HDR (Rec.2020) to SDR (Rec.709), leads to drops and a non-smooth picture, with loss frames.
If you unlock TDP in Ryzen Controller (ryzenadj) up to 15-16W, as the advertisement promises for 3200U-3500U, it still does not lead to the promised perfect play result. Neither with the latest Lenovo video drivers, nor from AMD. I tried all. On W10 Home/Pro and in LTSC(with VP9/H265 wrappers from MStore from VLD). Hardware decode work is ok by W10, but bad @60fps, from 2560x1440+.
At the same time, the memory in AIDA64 in the tests gives 32 Gb / s for reading, 33 for writing and 29.5-30 for copying with DDR2400 (4 + 4). For 3500U. Remember - latency for Zen+ - 115-120ns...
Thus, it can be recognized that Vega3-8 in the U series are not able to display all 4k content, only up to 30fps, no more.
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Intel has even less bandwidth on the i3 8145U, but it plays 4k@60fps in VP9 on YouTube without any problems.
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It turns out. As for the HDR content, Intel is blind (there is no HDMI 2.0b), and AMD is lame - there is HDMI 2.0b, but they deceived all their buyers of laptops with 15W TDP U-series processors in terms of the ability to watch 4k video at 60fps. Even 2560x1440@60fps in VP9 Vega8 cannot play without drops at 15W TDP for SoC with last Chrome on 3500U.
If the new AMD series is, as promised, 20-25% faster by IPC than the 3rd (15W TDP vs 15W TDP), then it will only come close in performance to the old i5 8265U(Whiskey Lake). And if the memory controller is the same braking or there will be the same cant as the desktop Zen2, where the write speed to the memory is 2 times worse. than reading on all versions with one chiplet (up to 3800X inclusive), they will have nothing to cover, when Intel soon releases 10nm + already with HDMI 2.0b, then AMD will have absolutely nothing to cover further. Good times for AMD are ending again ...
It can get ahead of Intel if it makes working video decoders at the GTX1650 level up to 8k in 4: 4: 4. Finally, it will make integer scaling of the picture from 8k-> 4k-> fhd and get ahead of Intel by implementing DisplayPort 2.0 and HDMI 2.1 in all settings without exception, which will contribute to the flourishing of 8k monitors that everyone is looking forward to (for the sake of a perfect picture!) Connected via one DP2.0 cable
Intel IceLake have in SoC logic for Thunderbolt 3.0 and Wi-Fi6(AX). AMD not have.
Any laptop manufacturer can easily add support for 2 TB3.0 ports with IceLake by soldering a cheap PHY level on mainboard($5-10) and installing $7 AX201! Even on cheap laptops for $ 500!
But marketers of manufacturers (like Lenovo) even now are creating complete mess.
For example, in the new S340-15IIL series with i5 1035G1 (which costs around $ 550-600), they installed a fake USB-C, without TB3.0 and even without PD/DP1.2 support! Not only that, they decided to make mock on customers in 2020 and soldered a miserable 4GB DDR2666 instead of the required 8Gb(soldered)+ 8Gb(in single slot for S340/540, instead 2 slots!) for all customers, which cost a penny!, while Ice Lake quietly supports DDR4 3200 and even 3733 for 32Gb+32Gb at top config! For this, you must literally kill marketers who tie their hands to engineers in R&D!