AMD’s Mobile Revival: Redefining the Notebook Business with the Ryzen 9 4900HS (A Review)
by Dr. Ian Cutress on April 9, 2020 9:00 AM ESTLow Power Performance
Truth be told, I didn’t go into this review with low power testing in mind. These sorts of laptops, while capable of driving high performance on the go, are essentially expected to be connected to the power socket when performance is needed. Even the best ultraportables struggle for battery life when everything is whirring at full tilt. Nonetheless, after my own experiences of 3 hours of gaming on power with a Matebook X Pro and a high screen brightness, it is a genuine use case.
For these tests, the settings and software are the same as normal, but the only change is that the power cable has been removed and the power setting in Windows has been moved to ‘Best Battery Life’. We’re still in the Recommended Power Plan and not the Battery Saver Plan. What this does is force the OS and system to manage its power appropriately between CPU and GPU. In these circumstances being able to distribute the power where it is needed most can be a very critical factor in getting a project finished, or having a game that is playable.
Our tests here, due to time, are the following:
- Civilization 6, 1080p MSAA 8x, AI Test (On Battery, Battery Saver)
- Borderlands 3, 1080p Medium (On Battery, Battery Saver)
- Counter Strike Source, 1080p Max (On Battery, Battery Saver)
So previously Intel had a very slight advantage in AI turn time here, but as we move to a power limited scenario, AMD takes a more substantial lead – over 10%.
Where we had a small 5% win for AMD in the full power scenario, the gap is a bit bigger percentage wise for AMD in the low power scenario. It is still under 30 FPS, which is probably unplayable for BL3.
Now CSS is a little odd. When I’m in Battery Saver mode but plugged in, I get the full power FPS value. But the minute I take it out, on the Razer Blade, something goes a bit mental and we end up being limited to 60 FPS. V-Sync is disabled in every setting I think of, and yet there doesn’t seem to be a way of getting off of 60 FPS.
Ultimately in every scenario, in a few small tests, where Intel might have been ahead on wall power, AMD pulls ahead on limited power.
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ses1984 - Thursday, April 9, 2020 - link
All those leds are probably 1w or actually a fraction of a watt.ingwe - Thursday, April 9, 2020 - link
Definitely fractions of a watt. If they were 1 W, I doubt manufacturers would include them. Though I might be wrong on that one given how things seem to be going.N8SLC - Thursday, April 9, 2020 - link
The LEDs are an option if so concerned.sonny73n - Saturday, April 11, 2020 - link
Yea, LEDs is in trends nowadays, for dumb kids.Deicidium369 - Sunday, April 12, 2020 - link
The market for this is people who are really into the performance enhancing RGB LEDs - and once they can actually buy and drive a car they will have the performance enhancing stickers on their 6th hand Gold HondaGreenReaper - Monday, April 20, 2020 - link
Hopefully they only light up by default if plugged in. Sure, they would still decrease charge rate, but I imagine that would be an acceptable cost for the target audience.BigMamaInHouse - Thursday, April 9, 2020 - link
CB R20 results are wrong, Great Review like always :-)Ian Cutress - Thursday, April 9, 2020 - link
Good catch, I think I typed in the PCMark numbers by mistake there.Retycint - Thursday, April 9, 2020 - link
Probably mixed up the numbers for the Intel and AMD. From what I've seen the AMD should be getting 4000+ for Cinebench R20anactoraaron - Thursday, April 9, 2020 - link
That's exactly it. My I7-9750h gets around 2200 at 35w and near 3000 at 65w. These are flipped.