AMD’s CES CPU Assault Brings Ryzen 6000 Mobile With RDNA 2, Ryzen 7 5800X3D, Zen 4 Platform Reveal
It's no secret to anyone that Ryzen has been a runaway success for AMD. The company touted 30% growth in its PC unit, with 49% growth in notebooks over the last two years and some 350 million PC shipped with AMD CPUs in 2021—a record for the company. Where once you could only find cheaply-built budget laptops bearing AMD chips, these days the company enjoys placement in a full range of products from economical to premium. AMD says its partners have over 150 "ultrathin, commercial, and gaming" laptops with its CPUs.


Specifically, AMD notes that the fastest Ryzen 6000 Mobile family chips will hit 5GHz under full boost, with graphics parts clocking all the way up to 2.4GHz. Those numbers, along with refinements in the CPU and the move to RDNA 2 graphics, means that the new CPUs are some 30% faster than the last generation in general computing, and fully twice as fast in gaming—at least by AMD's reckoning. Here's a chart with the full specifications of the Ryzen 6000 mobile CPUs:
As you can see, there's twelve different new models coming, although only nine of the chips are based on AMD's new Rembrandt processor. At the top end we have the Ryzen 9 6980HX, differentiated from the Ryzen 9 6980HS only by their TDP ratings. That's a trend across the chart; "HS" CPUs are slightly lower-power at 35W, while "H" CPUs are 45W, and "HX" CPUs can apparently scale up beyond that, likely in a larger chassis with hefty cooling and discrete graphics.
Not that you necessarily need discrete graphics. While the gains in CPU performance that AMD cites are pretty impressive for a release with neither major architecture changes nor a new node—10% in Cinebench ST, 30% in Cinebench MT, and 30% in PCMark 10—it's really the graphics performance that impresses on these processors.
These numbers are all straight from AMD so take them with however many grains of salt that you wish, but the red team claims that the ULV Ryzen 7 6800U can take a 60% lead over the Core i7-1165G7's Iris Xe graphics in Watch Dogs: Legion, an 80% lead in Fortnite, and offer fully triple the performance in Doom Eternal, among other games. Of course, the Intel chip in this testing is saddled with slower DDR4 memory; main memory bandwidth is usually the bottleneck in this kind of testing. Those numbers apparently also put the Ryzen 7 6800U ahead of the discrete GeForce MX 450 in all of the games tested, although the gap is a bit smaller.
As we just noted, the narrowest bottleneck for integrated graphics performance tends to be not the GPU core itself, but rather the fact that it has to share the already-slow main system memory with the CPU. One of the things with the biggest impact on memory bandwidth requirements is rendering resolution. That makes upscaling technologies like FSR a natural fit for integrated graphics, and indeed, AMD was keen to show that off.
Demonstrating Far Cry 6 running on a laptop equipped with a Ryzen 7 6800U, the company raised performance by half-again simply toggling FSR onto the "quality" setting. In our own testing, we found FSR's "quality" mode to be a completely acceptable compromise for games that were marginal on performance, and in this case, AMD's laptop was able to handle the game at 60 FPS with 1080p "Medium" settings. That's pretty darn good for a game as recent as Far Cry 6 on integrated graphics.
It's also worth noting that these are the first x86-64 processors ever made with support for ray-tracing hardware-acceleration. (PowerVR had RT acceleration in its mobile GPUs some years back.) It remains to be seen whether these IGPs are powerful enough to make use of that functionality in commercial games, but at least it's there.
Besides the new CPU and GPU bits, AMD's Ryzen 6000 Mobile processors bring along a whole new platform. As expected, it makes use of DDR5 memory up to 4800MT/s, or LPDDR5 up to 6400MT/s—a tantalizing option for those looking at compact gaming systems. It also supports USB 4, offering immense throughput at up to 40 Gbps. PCIe on the new chips is still Gen 4, but that's already more bandwidth than the overwhelming majority of laptops can even make use of.
AMD notes HDMI 2.1 support, but correctly includes the specific technologies supported: HFR, FRL, DSC, VRR, and HDR10+, which is to say "everything." AMD also mentions that Rembrandt is "DisplayPort 2 Ready", and specifically indicates support for accelerated decoding of the AV1 video format. AV1 is a hyper-efficient video codec that is mathematically-complex enough to make it absolutely painful to encode and decode using raw CPU power, so having decode support in these APUs is a big deal.


Shoring Up Desktop Performance With Stacked Silicon

One detail that AMD didn't provide about the Ryzen 7 5800X3D is its price. The company did give us a vague idea of when it will be released, though: this Spring. Hopefully sooner than later, because otherwise we might end up in a situation rather similar to when Intel released the Core i7-5775C just weeks away from the Core i7-6700K. The former CPU's big cache allowed it to hold its own rather well against the newer CPU, and if Zen 4 doesn't come with stacked cache, it could make for an interesting comparison.
