Maybe you’ve already read our main review of the first Ryzen 4000 CPU we’re testing, the Ryzen 9 4900HS, which AMD announced March 16. It’s a 7nm, 8-core/16-thread chip with a base clock of 3GHz and a boost clock of 4.3GHz. It also offers 8 Radeon Vega cores. The ‘H’ means it’s intended for power users, and the ‘S’ means it’s for “slim”-profile laptops. We’re stunned at the CPU’s impressive tour de force that defeats just about every Intel 8th- and 9th-gen laptop CPU we’ve ever seen.
While that story contains a core suite of benchmarks, this story compiles all the tests we ran. We’ll add more benchmarks as we test more of the first generation—AMD expects about 100 laptops with Ryzen 4000 parts to ship this year.
How we tested
We conducted our tests using the Asus ROG Zephyrus G14 ($1,450 at Asus.com), a 14-inch laptop with Nvidia’s new GeForce RTX 2060 Max-Q, 16GB of RAM, 512GB SSD, and a Ryzen 9 4900HS CPU. The comparison laptops we’ve chosen are mostly in the ROG Zephyrus G14’s class, as well as ones far larger, and far heavier. We also include a laptop with an older 7th-gen quad-core, so you can see just how far we’ve come. They’re not apples-to-apples, which is nearly impossible in the highly customized world of laptop design. We could have controlled more for comparable size and weight—larger laptops tend to have better thermals—but AMD actually wants you to see what this 3.5-pound laptop can do against 4.5-pound, 5-pound, and 7-pound laptops featuring Intel’s CPUs.
For the most part we tested the Ryzen 9 4900HS in the laptop’s “turbo” setting, which is one click up from its default “performance” setting. For all of the other laptops, we selected the performance results, but did not include any actual overclocked scores for those laptops.
We should note that our comparisons mix mostly earlier test results with a few fresh numbers. Unlike our current desktop CPU reviews, where we keep the CPUs and re-run tests with refreshed drivers, BIOSes, and OS, laptop tests are a snapshot in time before we return review units to the company. It’s not ideal, but when we’ve been able to retest, we’ve actually found little change. We’ll have fresher results once laptops with Intel’s newer 10th-gen chips show up.
Ryzen 4000 CPU performance
We put the Asus ROG Zephyrus G14 through extra CPU tests to get a fuller view of what makes Ryzen 4000 tick. We start with the well-established Cinebench.
Cinebench R15 is a 3D rendering benchmark made by Maxon. It’s based on the engine from its Cinema4D product, which figures in such products as Adobe’s Premiere video editor. This is an older test (but still relevant), so we have a healthy list of comparable Intel-based laptops.
Like most 3D rendering engines, the test is heavily multi-threaded. The more CPU cores and threads you throw at it, the more performance you get. It runs on today’s laptops in under a minute, so the all-core boost speeds of each laptop will have a larger impact.
The results are nothing less than phenomenal for the Ryzen 9 4900HS. As you can see, it easily dispatches the 8-core Core i9-9980HK in the big Acer Predator Helios 700, as well as the 8-core Core i9-9880H in the MSI GE65 Raider. The old-school Ryzen 7 2700—a desktop chip—in the Acer Predator Helios 500 pulls up last among the 8-core CPUs. Intel’s Core i7 and its older Core i9 chips with “just” 6-cores can’t hang, either.
The reigning champion is neither surprising nor embarrassing for the Ryzen 9 4900HS. It’s the Alienware Area 51m R1, a true beast with a desktop Core i9-9900K at its heart.
Let that sink for a moment: A 3.5-pound Asus ROG Zephyrus G14 with a low-power Ryzen 9 4900HS is only about 5 percent slower than an 8.5-pound Alienware Area 51m R1 with a desktop Core i9-9900K. Granted, the Alienware could pull further away if overclocked, but this is a hell of a result for the Ryzen 9 4900HS.
The song remains the same in Maxon’s new Cinebench R20, which uses a far more current engine from Cinema4D, supports up to 256 threads, and also stresses AVX, AVX2 and AVX512 workloads. Add in the much longer run times, and you have a benchmark that is particularly tough on CPUs that rely excessively on boost clocks.
You can see the results of the harsher workload below. The Ryzen 9 4900HS easily beats every single laptop Intel sells—from 10-pound hulks to 5-pound workhorses with 8 cores inside. The only dog higher in the pile is once again the Alienware Area 51m R1. That’s just wow.
Multi-core performance is great, but the real world is often stuck in single-core land. While 3D modelling isn’t the same as say, running Microsoft Word, running Cinebench R15 on a single thread is still a valid way to measure how a CPU reacts under a given single-core load.
Intel’s mature 14nm CPUs have a well-known advantage in high clock speeds in the 4.8GHz to 5GHz range. Here, the Ryzen 9 4900HS falls back a few notches, but it loses only to three laptops that weigh 2.5 times as much as the ROG Zephyrus G14. Even with the thermal advantage, the Core i9-9980HK is only 3 percent ahead, and the mighty desktop Core i9-9900K, a mere 6 percent. The Ryzen 9 4900HS also pulls ahead of the only arguable competitor here, the Core i9-9880H in the MSI GE65 Raider.
We ran Cinebench R20 in single-threaded mode as well, and we were floored by the results. Although technically a tie, the Core i9-9880H and Ryzen 9 are dead even. With Intel’s clock speed advantage, especially in single-threaded tasks, we didn’t think it would be so close.
For another perspective on CPU performance, we use the free HandBrake encoder to convert a 30GB, 1080p file using the Android Tablet preset. It’s a multi-core CPU test that can take an hour to run on a quad-core lightweight laptop. Even on the more powerful laptops being tested here, HandBrake conversion can take around 20 minutes. That’s enough time for most laptops to start to throttle down as the heat builds up around the busy CPU.
Only the laptops with the very best cooling can sustain higher clocks. At least, that’s the way it’s been with Intel’s 14nm chips. With the 7nm Ryzen 9 4900HS, you can apparently do well in this test simply by producing less heat. While the huge, thick Alienware Area 51m and Acer Predator Helios 700 come in first, right behind them is the 3.5-pound ROG Zephyrus G14. It’s a bit like having two muscle cars lay skid marks and tear away at a greenlight—only to see a golf cart pulling up just behind them at the next light.
Ryzen 9 4900HS gaming performance
Almost all of the tests in this story are CPU-bound because we’re focused on measuring solely the Ryzen 9’s capabilities in the ROG Zephyrus G14. Because most of the laptops here have very different graphics chips, anything touching the GPU would muddy CPU performance.
For those wondering how the Ryzen 9 would do in a theoretical game physics test, you can see that with UL’s 3DMark Time Spy CPU score. The score isolates CPU performance during a multi-core CPU test. As we’ve seen before, the two big “muscle books” lead the way by about 10 percent—and they also outweigh the Asus ROG Zephyrus G14 by 2.5X to 3X.
Of greater interest is the MSI GE65 Raider, with its 9th-gen, 8-core Core i9-9880H. Despite weighing in at five pounds, the GE65 Raider falls far behind the Ryzen 9 4900HS in the ROG Zephyrus G14.
We know, we know, you still want to see how well the Ryzen 9 4900HS does in real games. We would too, but modern gaming is almost always about the graphics card. AMD does claim that its advantage in thermals with the Ryzen 4000 gives it an edge. To measure that though, we’d need a similar class of laptop with the same GPU and the same cooling. And again, ideally, we’d have this in the exact same model.
Clearly, a 3.5-pound laptop with a GeForce RTX 2060 Max-Q in it can’t easily be compared to a laptop with a GeForce RTX 2070, RTX 2080, or possibly even a RTX 2060.
We can at least show you the results of the graphics systems from many of the laptops above. It’s interesting to see the essential dead heat between the Asus ROG Zephyrus G14 and a Dell G7 with a GeForce RTX 2060. That either means the lighter CPU thermal load from the Ryzen 9 does indeed help graphics performance, or there’s something more to this new GeForce RTX 2060 variant in the ROG Zephyrus G14.
We also ran the laptop through real games such as Rise of the Tomb Raider. The results are again quite impressive given the disparity in weights, but so muddied by the different GPUs that it’s really hard to determine anything. What seems safe to say is that gaming with the ROG Zephyrus G14 is quite good, and in line what what you’d expect of a laptop with an RTX 2060-class GPU and a fast CPU.
We did consider running gaming laptops off of an external GPU, but without Thunderbolt 3 on the Zephyrus G14, it’s not possible.
One thing we have confirmed is the PCIe on the Ryzen 4000 is limited to x8 using Gen 3 technology for the discrete GPU. The SoC features another 12 lanes of PCI Gen 3 for various plumbing such as storage, WiFi, or 5G.
Should this deter you from Ryzen? In our opinion, no. Few consumer graphics loads truly require the bandwidth of 16 lanes of PCIe. To give you an idea of how much it doesn’t matter, Alienware’s Area 51m R1 with a GeForce RTX 2080 also uses an 8-lane connection to the GPU. The other eight lanes are repurposed to support the company’s external graphics amplifier.
Keep reading for even more benchmarks!
Additional tests: V-Ray, Blender and more
When we test a new CPU, we do extra benchmarking to get a more complete picture of performance. What you’ll see below are the additional tests we ran, and what they told us about the Ryzen 9 4900HS.
Ryzen 4000 Thread scaling performance
Modern CPUs all vary in performance depending on how many threads are active, how well they can be cooled, and just how hard they can be pushed. Because many applications don’t scale beyond a single core or four cores, it’s actually valuable to see just how a CPU responds to loads as we scale from one thread to eight threads.
We do just that with Cinebench R15. To understand what matters on these charts, if most of your work is lightly threaded—chose the laptop that’s faster on the left side. For those who always push all cores all the time—chose the laptop that’s faster on the right side.
For the first result, we compare Intel’s current six-core Core i7-9750H against the eight-core Ryzen 9 4900HS. While Intel fans may howl that this comparison is unfair, we actually think it’s valid because we frankly haven’t seen thin-and-light gaming laptops with eight-core Core i9’s inside. Sure, you get a 4.5-pound Dell XPS 15 with an 8-core Core i9, but its GPU is a GeForce GTX 1650 Max-Q. The laptop is also quite thermally challenged and best focused on content creation, rather than pure gaming.
The truth is that most 4.5- to 5-pound gaming laptops with Intel chips feature the Core i7-9750H. Why? We aren’t 100-percent sure, but we believe vendors would rather save the thermal budget for the GPU, so they opt for the cooler-running Core i7.
As you’d expect, it’s pretty much a slaughter, with the Core i7-9750H (blue bar) vs. the Ryzen 9 4900HS (green bar).
As another way to understand just how much faster the Ryzen 9 4900HS is over a Core i7-9750H, we break out the difference by percentage. As you can see, it’s fairly close on the left side of the chart under light thread loads, but as the threads pile on, the Ryzen 9 smokes that Core i7-9750H.
Oh, you really want to see 8-core vs. 8-core? Luckily, we recorded scores for a Core i9-9880H in the MSI GE65 Raider before sending it back. The result is definitely an improvement for Intel, but still not pretty.
The higher boost scores of that Core i9-9880H actually give it the lead on single-threaded loads, but the Ryzen 9 4900HS still romps it by double-digits. And again, we’ll point out that GE65 Raider weighs a pound and a half more and features a smaller battery too.
While our database of results is the largest for Cinebench R15, we also have numbers for other CPU-intensive 3D rendering applications. Although the benchmarks are a little dated, the results are still valid.
In V-Ray 1.08, for example, more cores are better, and shorter results are better. We see the Ryzen 9 4900HS ties with the older desktop Ryzen 7 2700 that was jammed into a laptop. While we don’t have 8-core results for the Intel chip, we do have numbers from 4-core and 6-core laptops on hand. Will this change with Intel’s upcoming 10th-gen Comet Lake H CPUs? We don’t know, but stay tuned.
Next up are results from the open-source Blender that’s popular with the indie movie scene. For this test, we use an older version to remain comparable with laptops tested in the past.
Our test load is Mike Pan’s famous BMW benchmark file, and we use the default Cycles render engine in Blender. The Ryzen 9 4900HS edges out the 8-core Core i9-9880H in MSI’s GE65 Raider, to the tune of about 14 percent. The Ryzen 9’s cousin, the Ryzen 7 2700 desktop chip, doesn’t even come close in this test.
Up next is the Corona benchmark. Like all of the 3D rendering tests you’ve seen, it’s all about the CPU. Our results include only Intel’s tuned-up 8th-gen Core i9, which features only six cores. It pulls close, but the gold medal still goes to the Ryzen 9. The older 8-core Ryzen 7 also fares rather poorly in this test.
Our last couple of pure CPU rendering tests use POV-Ray’s internal benchmark. POV-Ray dates back to days of the Commodore Amiga, but it’s been loyally updated and generally scales with core count.
The score for the MSI GE65 Raider and its 8-core Core i9-9880H seems oddly low considering that it has two more cores than the Core i9-8950HK in the Predator Helios 500. Still, the winner is clearly the Ryzen 9 4900HS by a country mile.
Our last test uses POV-Ray 3.7 in a single-core mode to look at the performance of the CPUs. It’s basically a three-way tie between the 8th-gen Core i9, the 9th-gen Core i9, and the Ryzen 9 3900HS. As the Ryzen traditionally runs at lower speeds—this is still a good result for AMD.
We’ll have to delve into why the Ryzen 9 does far better than expected in single-core loads at a later point. It’s entirely possible the chip runs cooler and more efficiently, so its overall clock speed is more even, negating Intel’s usual rhythm of starting high and slowly trailing off.
Curse, what curse? AMD is leaving all its laptop woes behind, coming out of the gate full-speed with its first Ryzen 4000 mobile chip, the Ryzen 9 4900HS. There are more chips to come in this family, and 100 laptops featuring them due out this year. We’ll keep testing so we can tell you more about this groundbreaking new family of mobile chips.
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