Asus ROG Zephyrus G14—Ryzen 7nm mobile is here, and its awesome

We've been excited about getting our hands on AMD's 7nm laptop parts for a long time now—even before visiting AMD's campus in Austin last month for a sneak preview. Originally, we were supposed to come home from AMD with a laptop in hand to test, but the novel coronavirus had its way with this as with many other products.

We did eventually get one of Asus' Zephyrus G14 gaming laptops with a top-of-the-line Ryzen 9 4900HS, though—and after several days of testing, we're ready to talk about it.

Overview

The Zephyrus G14 is a surprisingly small and sleek build for a full-on gaming laptop—and make no mistake about it, that's precisely what this beast is. At first glance, the 18mm-thick Zephyrus looks more like an ultraportable design than a gaming laptop. (For reference, the Acer C720 11-inch Chromebooks were 19mm thick.)

Any similarity to a Chromebook goes away when you pick the Zephyrus up, though. At a little less than 4 pounds, it's not exactly a battlestation of old—my old System76 Gazelle Pro came in at 5.5 pounds!—but it's much heavier than you'd expect from such a sleek little laptop.

The G14's fans spin up quickly and authoritatively the moment the system is put under even the slightest amount of load. For a typical laptop, this might be a little annoying—but we suspect it's a design decision the gamers the G14 is aimed at will appreciate. Nobody's going to lose any frames because this laptop thought keeping quiet was more important.

At full-on leafblower mode, the fans are loud enough to be heard a room away. We don't have a good way to measure the volume directly, but notebookcheck.net reports it gets as high as 53.5dB. That's louder than competing gaming laptops—but we should note that the fan noise is a very livable, clean "whoosh" with no rattles, coil whine, or bearing hum. All you hear is air.

The cooling system, however loud, definitely performed well. Even after hours of continuous heavy graphics and CPU load testing, performance did not drop—and the chassis and keyboard did not feel hot to the touch.

Our biggest complaint about the G14—aside from the lack of a camera—is the difficulty in opening it. There is no notch or gripping surface in the center bottom of the lid, and the hinges are very stiff. Stiff hinges mean good build quality and longer chassis life, but this really was a difficult laptop to open—the first time out of the box, we were tempted to go grab a spudger. Eventually, we discovered it can be opened one-handed from the side, rather than the center.

The keyboard backlight was also disappointing. It's a pale white, with one or two LEDs beneath the keyboard servicing the whole thing. The overall effect is distinctly uneven, and actually reading the keys in the dark isn't at all easy.

CPU performance

There's not much to say about the Ryzen 9 4900HS CPU in the Zephyrus G14 beyond "wow." Getting the full set of benchmark utilities loaded on a new laptop can be annoying—especially PCMark, which comes as a 3.27GiB zip file.

The Zephyrus G14's Ryzen 9 4900HS CPU was more than up to the challenge of a few measly GiB of zip file, however—it unzipped PCMark in under 30 seconds, at a whopping 140MiB/sec. The bottleneck here was almost certainly the Intel 660p SSD—the 660p is a QLC (Quad-Level Cell) drive, which means its write speed tends to dip down to 100MiB/sec pretty quickly.

The Ryzen 9 4900HS did as well actually running the benchmarks. In multi-threaded benchmarks, it runs neck and neck with Intel's high-end desktop gaming CPU, the i9-9900K. The 4900HS runs away laughing from the more affordable i7-9700K—not to mention its actual competition, the i7-9750H laptop CPU.

The race is considerably closer when it comes to single-threaded benchmarks. Single-threaded, the 4900HS comes in second or third to the Intel desktop gaming CPUs—though it consistently beats the Intel laptop CPU. The margins here are considerably smaller, though, and there's probably not much to choose from when it comes to truly single-threaded workloads.

GPU performance