What makes a console generation? The lines have been blurred recently. We can state that the Xbox Series X, and its less-powerful sibling, the Series S, are the next generation consoles from Microsoft. But how do you define the generation? Just three years ago, Microsoft launched the Xbox One X, the most powerful console in the market, but also with full compatibility with all Xbox One games and accessories. With multiple tiers of consoles and mid-generation refreshes that were significantly more powerful than their predecessors – and in some cases, their successors – the generational lines have never been this blurred before.

None the less, the time for a “proper” next generation console has finally arrived, and Microsoft is fully embracing its tiered hardware strategy. To that end, Microsoft is launching not one, but two consoles, with the Xbox Series X, and the Xbox Series S, each targeting a difference slice of the console market both in performance and price. Launching on November 10, 2020, the new Xboxes bring some serious performance upgrades, new designs, and backwards compatibility for not only the Xbox One, but also a large swath of Xbox 360 games and even a good lineup of games from the original 2001 Xbox. The generational lines have never been this blurred before, but for Microsoft the big picture is clear: it’s all Xbox.

The Xbox Series X is the flagship console, and the one we have been teased about for over a year. When launched, it will be the most powerful console in the market. Microsoft learned some lessons from the original Xbox One launch, and they seem keen to not make those mistakes again, so they have partnered with AMD to deliver a console with eight Zen 2 CPU cores paired with an AMD RDNA 2 graphics processor with 12 TFLOPS of performance. With 16 GB of GDDR6 memory, and 1 TB of solid-state storage, the new Xbox Series X targets gamers looking for 4K gaming at 60 FPS, with up to 4K 120 FPS on some titles.

The Xbox Series S goes a different route, with a much more cost-effective console. It still features AMD Zen 2 CPU cores, but a much smaller 4 TFLOP GPU, which is not even as powerful as the Xbox One X from 2017. With 10 GB of GDDR6 and 512 GB of solid-state storage, the Xbox Series S targets 1440p gaming, or, more realistically for televisions, 1080p at up to 120 FPS, and with a large number of people still owning 1080p televisions, the less-expensive console has a definite niche.

Both consoles offer solid-state storage, which is one of the key features of the new generation. While not a new idea, solid-state offers a significant number of performance benefits as have been realized in the PC space for a decade or more, but cost has been prohibitive before.

With any console generation, the glue that holds it together is the games, and Microsoft has chosen a very different course for the Xbox Series X|S. With full backwards compatibility, there is already a large library of games, and games developed for the new consoles will continue to be available on the Xbox One as well, at least for now. Exclusives that are just for the Xbox Series X|S do not exist, which is certainly not how most console launches go. Instead, Microsoft sees the future of gaming in the Xbox Game Pass, which is a subscription service to a buffet of gaming titles.

Xbox Specification Comparison
  Xbox Series X Xbox Series S Xbox One X Xbox One S
CPU Cores 8C/16T 8C/16T 8C/8T 8C/8T
CPU Frequency 3.8 GHZ
3.6 GHz w/SMT
3.6 GHZ
3.4 GHz w/SMT
2.3 GHz 1.75 GHz
CPU µArch AMD Zen 2 AMD Zen 2 AMD Jaguar AMD Jaguar
52 CUs
3328 SPs
1.825 GHz
20 CUs
1280 SPs
1.565 GHz
40 CUs
2560 SPs
1172 MHz
12 CUs
768 SPs
914 MHz
Peak Shader Throughput 12 TFLOPS 4 TFLOPS 6 TFLOPS 1.4 TFLOPS
Embedded Memory None None None 32MB eSRAM
Embedded Memory Bandwidth None None None 218 GB/s
System Memory 16GB GDDR6 10GB GDDR6 12GB GDDR5 8GB DDR3-2133
System Memory Bus 320-bit 128-bit 384-bit 256-bit
System Memory Bandwidth 10 GB @ 560 GB/s
6 GB @ 336 GB/s
8 GB @ 224 GB/s
2 GB @ 56 GB/s
326 GB/s 68.3 GB/s
Storage 1 TB SSD
802 GB Free
512 GB SSD
364 GB Free
Manufacturing Process TSMC 7nm TSMC 7nm TSMC 16nm TSMC 16nm
Dimensions 151mm x 151mm x 301mm 151mm x 275mm x 65mm 300mm x 240mm x 60mm 295mm x 230mm x 65mm
Weight 4.44kg 1.92kg 3.81kg 2.9kg
PSU 315W
Optical Drive UHD Blu-Ray None UHD Blu-Ray UHD Blu-Ray
Wireless 2x2 802.11ac 2x2 802.11ac 2x2 802.11ac 2x2 802.11ac
Launch Price (USD) $499 $299 $499 $299
Launch Date 11/10/2020 11/10/2020 11/07/2017 08/02/2016

Microsoft has blurred the generational lines significantly with the Xbox Series X|S launch in quite a few ways, and accessory support is definitely one of them. In past console generations, new consoles would have new controllers and all new accessories would be required. That is not the case with the Xbox Series X|S. All Xbox One controllers are 100% compatible, as should be most other accessories such as headphones, and even the Xbox Adaptive Controller. There is one major accessory which is not compatible though, and that is Kinect. Kinect was a major focus of the Xbox One launch, but Microsoft quickly dropped the expensive accessory from being a requirement, and its use-case never materialized in any significant way. Xbox One games that require Kinect will not be compatible with the new Series X|S but all other Xbox One games will be through backwards compatibility. If you still use Kinect and enjoy it, this may seem like a step back, but from personal experience, Kinect will not be missed.

Another loss moving into this generation is the HDMI input which is no longer available. As part of the media push for the Xbox One, it included an HDMI input so you could insert the Xbox between your cable box and TV, allowing cable to be controlled via an IR blaster which could be plugged into the Xbox One. This had some advantages, but the media usage with DVR recording functionality ultimately never materialized, and there were likely only a small group of people taking advantage of this feature.

With the console features that define generations a short list indeed, let us now dig into the technical specifications of the new consoles so we can determine if these are indeed generational updates.

Powering Xbox: All AMD
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  • eastcoast_pete - Saturday, November 7, 2020 - link

    You're correct, and Brandon was outstanding in this movie (by Elia Kazan, I believe). Thought Stallone did borrow that line for Rocky, but it's been a while that I watched it. That being said, the "S" is at risk of being the bum among consoles, and the fact that it's readily available for pre-order suggests it's not rocking many boats out there.
  • flyingpants265 - Friday, November 6, 2020 - link

    One or two of the cores are doing things not related to games.
  • flyingpants265 - Friday, November 6, 2020 - link

    What exactly is the point of the Series S? The whole point of consoles is that they're standardized
  • andrewaggb - Friday, November 6, 2020 - link

    The trend started with the ps4 pro and xbox one x. They're still fairly standardized, same peripherals, same cpu, same gpu archicture, same software. Series S is just for 1080p only and will probably have somewhat lower quality textures because it has less ram.
  • Shlong - Monday, November 9, 2020 - link

    The Series S also doesn't have updated graphics for backward compatibility games. The graphical updates for Xbox One games will show up on Series X but not S.
  • cmdrdredd - Monday, November 9, 2020 - link

    That went out the window a while back. Now it's just a brand, the Xbox. All games using smart delivery work on any Xbox One or Series console and will use the appropriate settings and resolution for that console. Not unlike graphics settings in your PC. I could ask what the point of a RTX3070 is and the answer is the same. A lower power and cheaper alternative that is good enough for a lower resolution.
  • eastcoast_pete - Friday, November 6, 2020 - link

    Thanks for the first look/review, Brett! Question: Did you have a chance to see just how fast the USB 3.1 connection is when a. Used with an external SSD or b. a regular 7200 rpm HDD. Especially interested in getting an idea how fast or slow it is to transfer some of the games you tested back into the built-in SSD. If you haven't tested it but still have the unit, can you try it? Thanks!
  • Brett Howse - Saturday, November 7, 2020 - link

    Thanks for the question. I don't actually have a USB SSD drive to test this. I do have a slower USB HDD but I think it would end up being the bottleneck and would give unreliable results. I think whether this is worth it for you is whether you have fast internet or not.

    I'll still try the USB HDD this weekend and just see how it goes and let you know.
  • eastcoast_pete - Saturday, November 7, 2020 - link

    Thanks Brett, even a regular HDD will give an initial idea. Regarding an external SSD: Maybe someone else at AT has an external SSD they can lend you? With the current pricing for the proprietary add-on SSD, a half-priced external SSD connected by USB 3.1 is an interesting alternative. Assuming the Series X supports about 350 - 400 MB/second over USB, I'd probably get a 1TB external SSD and keep an external 8 TB HDD for "cold storage".
  • Brett Howse - Saturday, November 7, 2020 - link

    Just so you are clear on this, any USB connected drive is not capable of being used for Series X|S games. It can be used for storage only. To play the new games they have to be on internal storage or on the Seagate storage drive. You'd have to shuffle games around if you want to keep them on USB.

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