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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallOn March 16, 2020, Microsoft disclosed the launch Xbox Series X’s headline specifications and explained how its unusual tower-shaped interior was designed around cooling a powerful custom chip. The reveal described a target of 4K gaming at 60 frames per second, with support for up to 120fps in compatible games—not a guarantee that every game would hit those settings.
Xbox Series X launch specifications
This table describes the original disc-equipped Series X revealed in March 2020, not every configuration sold later. Microsoft’s official specifications and 2020 hardware fact sheet provide the figures below.
| Component | Original launch specification | What it means |
|---|---|---|
| CPU | Custom AMD Zen 2, eight cores: 3.8GHz with SMT off, or 3.6GHz with SMT on | Developers could use the operating mode that better suited a game; the two clock speeds are alternatives. |
| GPU | Custom RDNA 2-class design, 52 compute units at 1.825GHz; advertised at approximately 12 teraflops | A substantial graphics capability, but teraflops alone do not predict game performance across different systems. |
| Memory | 16GB GDDR6: 10GB at 560GB/s and 6GB at 336GB/s | The memory pool has two bandwidth tiers, rather than one uniform speed. |
| Internal storage | 1TB custom NVMe SSD | Designed for faster loading and sustained asset streaming; 1TB is advertised capacity, not a promise of that much free space for games. |
| Storage throughput | 2.4GB/s raw; up to 4.8GB/s compressed, according to Microsoft | The compressed figure depends on the hardware decompression pipeline and its stated assumptions. |
| Expansion | Proprietary Storage Expansion Card | Designed to match internal storage performance for running optimized games. |
| Video and display | Target of 4K at 60fps; support for up to 120fps in compatible games; HDMI 2.1 | Actual resolution and frame rate depend on the game, its mode, and the display. |
| Disc drive | 4K UHD Blu-ray drive | The original launch model could play physical games and UHD Blu-ray discs. |
The headline figures were specifications and targets, not independent retail test results. At the March reveal, Microsoft had not established how every launch game would perform, or what real-world noise, power use, and temperatures would be under sustained play.
What the custom CPU and GPU were meant to deliver
CPU: more room for simulation and game logic
The eight-core Zen 2 CPU represented a major architectural step beyond the Jaguar-based processors in the Xbox One family. It could run with simultaneous multithreading (SMT) disabled at 3.8GHz, or enabled at 3.6GHz. These are two configurations, not figures to combine. Microsoft described the chip as custom; it should not be treated as identical to a particular desktop Ryzen processor, which operates under different power, thermal, and software constraints.
#1 Best Overall
- FASTEST, MOST POWERFUL XBOX — Experience next-generation performance with 12 teraflops of processing power, delivering smoother gameplay, richer worlds, and faster responsiveness than any previous XBOX.
- TRUE 4K GAMING UP TO 120 FPS — Enjoy breathtaking visuals with true 4K resolution, HDR, and frame rates up to 120 FPS, plus hardware-accelerated ray tracing for a heightened level of realism.
- 1TB CUSTOM SSD AND XBOX VELOCITY ARCHITECTURE — Reduce load times dramatically with the custom 1TB NVMe SSD and XBOX Velocity Architecture, enabling lightning-fast performance and seamless world streaming.
- QUICK RESUME — Seamlessly switch between multiple games and resume exactly where you left off. No more waiting through title screens and loading bars.
- FOUR GENERATIONS OF GAMES — Play thousands of games from XBOX Series X|S, XBOX One, XBOX 360, and Original XBOX, with many titles enhanced for better visuals and performance on XBOX Series X.
GPU: capability, not a universal score
The GPU’s 52 compute units ran at 1.825GHz, and Microsoft advertised approximately 12 teraflops of compute performance. Teraflops describe a measure of floating-point throughput; they do not account for every factor that shapes a game’s frame rate or image quality. Architecture, memory bandwidth, APIs, engine design, resolution, and graphics settings all matter. The console’s custom RDNA 2-class GPU was not simply a retail PC graphics card installed in a box.
Memory: 16GB divided across bandwidth tiers
The 10GB high-bandwidth portion was optimized for GPU use, while the remaining 6GB ran at a lower bandwidth. The hardware fact sheet also identifies memory reserved for system software. Developers therefore had to manage not only how much memory a game used, but which resources benefited most from the faster tier.
Rank #2
- What's in the box: Xbox Series X console, 1 Xbox Wireless Controller - Carbon Black, Ultra High Speed HDMI cable, Power cord.
- Equipped with AMD's Zen 2 and RDNA 2 architectures, DirectX ray tracing delivers true-to-life lighting, shadows and accurate reflections to create dynamic, living worlds.
- Memory: 16GB GDDR6 w/320 bit-wide bus; Memory Bandwidth: 10 GB @ 560 GB/s, 6 GB @ 336 GB/s; Internal Storage: 1TB Custom NVME SSD
- Gaming Resolution: True 4K; Performance Target: Up to 120 FPS; High Dynamic Range: Up to 8K HDR; Optical Drive: 4K UHD Blu-Ray; HDMI Features: Auto Low Latency Mode, HDMI Variable Refresh Rate, AMD FreeSync.
- Bundled with HDMI_Cable
Why the console had a tower-shaped interior
The enclosure had to fit a high-power system-on-chip, power supply, optical drive, storage, and a substantial cooling assembly while providing a clear route for airflow. Contemporary technical reports described two main circuit boards arranged around an aluminum structure, with a large heatsink and vapor-chamber cooling system. That layout helped organize the components and cooling hardware in a relatively compact enclosure; the tall exterior was an engineering choice as well as a visual one. See TechSpot’s contemporary teardown coverage and Thurrott’s specification report.
The intended airflow was straightforward: air entered low in the chassis, passed through the cooling assembly and over heat-producing components, then exited from the top through a large axial fan. Microsoft’s design goal was to sustain performance without depending on a small, exceptionally loud fan. The disclosure explained the design intent; it did not, by itself, establish retail noise levels or long-term reliability.
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Rank #3
- BEST VALUE IN GAMING — Experience next-gen speed and performance in the smallest XBOX ever. The XBOX Series S delivers powerful all-digital gameplay in a sleek, compact design.
- UP TO 120 FPS GAMEPLAY — Enjoy smooth, responsive gaming with frame rates up to 120 FPS, powered by XBOX Velocity Architecture, a custom NVMe SSD, and DirectX Raytracing for a heightened level of realism.
- 512GB CUSTOM SSD AND XBOX VELOCITY ARCHITECTURE — Reduce load times dramatically with the custom 512GB NVMe SSD and XBOX Velocity Architecture, enabling lightning-fast performance and seamless world streaming.
- QUICK RESUME — Seamlessly switch between multiple games and resume exactly where you left off. No more waiting through title screens and loading bars.
- FOUR GENERATIONS OF DIGITAL GAMES — Play thousands of digital games from XBOX Series X|S, XBOX One, XBOX 360, and Original XBOX with backward compatibility. Many titles are enhanced for better visuals and performance. Smart Delivery ensures you always get the best version for your console.
How the SSD and Xbox Velocity Architecture worked together
Microsoft presented the SSD as one part of a broader storage system, the Xbox Velocity Architecture. Its four elements were custom NVMe storage, hardware-accelerated decompression, the DirectStorage API, and Sampler Feedback Streaming. The combination was intended to let games move the right assets into memory as needed, rather than treating storage as a passive faster disk. Microsoft’s Velocity Architecture explanation describes the design in more detail.
Microsoft said the pipeline could deliver 2.4GB/s of raw I/O and up to 4.8GB/s with compression. Hardware decompression used LZ decompression and Microsoft’s BCPack texture-compression technology, reducing the CPU work needed to unpack assets. Microsoft also said developers could access more than 100GB of game data on the SSD. These are pipeline capabilities, not guaranteed loading times: results vary with asset organization, engine implementation, patches, CPU workload, and whether a game was optimized for Series X|S.
Rank #4
- What's in the box: Xbox Series S 512GB console, 1 Wireless Controller, High Speed HDMI cable.
- CPU: 8X Cores @ 3.6 GHz (3.4 GHz w/SMT) Custom Zen 2 CPU; GPU: 4 TFLOPS, 20 CUs @1.565 GHz Custom RDNA 2 GPU; SOC Die Size: 197.05 mm2.
- Memory: 10GB GDDR6 128 bit-wide bus; Memory Bandwidth: 8GB @ 224 GB/s, 2GB @ 56 GB/s.; Internal Storage: 512GB Custom NVME SSD
- Gaming Resolution: 1440p; Performance Target: Up to 120 FPS; HDMI Features: Auto Low Latency Mode, HDMI Variable Refresh Rate, AMD FreeSync.
- Faster loading: A faster storage path can reduce waiting when a game loads content.
- More detailed streamed worlds: Faster access can give developers more options for delivering assets as players move through a world. It does not automatically make every game larger or more detailed.
- Loading screens: Microsoft’s claim that the architecture could “virtually eliminate” load times was an aspiration, not a universal outcome. Games may still show loading screens for synchronization, online services, decompression, or design reasons.
Expansion storage: what could run from each drive
Microsoft’s September 2020 storage primer distinguished storage for Series X|S-optimized games from storage that could run them directly.
| Storage | Store optimized games | Run optimized games directly | Run backward-compatible games directly |
|---|---|---|---|
| Internal SSD | Yes | Yes | Yes |
| Proprietary Storage Expansion Card | Yes | Yes | Yes |
| USB 3.1 HDD or SSD | Yes | Generally no | Yes |
The expansion card was a proprietary device, not a standard user-replaceable M.2 SSD. It was designed to match the internal drive’s performance, so optimized games could run from it. USB storage remained useful for archiving optimized games, moving installations, and playing supported backward-compatible titles, but it did not provide the same operating path for optimized games.
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Graphics and display features were game- and display-dependent
The Series X supported hardware-accelerated DirectX ray tracing, Variable Rate Shading (VRS), Variable Refresh Rate (VRR), and low-latency display features. Microsoft’s Xbox overview, launch announcement, and latency explanation discuss these capabilities.
- Ray tracing: A supported graphics technique, not a guarantee that every game would use it. Its performance cost and visual effect depended on each game’s implementation and graphics mode.
- 120fps: Possible in supported games, but required developer support and a display capable of the relevant refresh rate. HDMI 2.1 did not make every title run at 4K and 120fps.
- VRR and low latency: Useful only with compatible displays and appropriate settings; their availability did not ensure a particular frame rate.
Quick Resume and backward compatibility
Quick Resume was a system-level suspend-and-resume feature, distinct from a game’s save system. It could let players return to suspended games without starting from the beginning, but online authentication, updates, server connections, or a title’s handling of suspension could affect whether a game resumed as expected.
Microsoft said supported backward-compatible games could benefit from the newer console’s CPU, GPU, and SSD, potentially improving loading, resolution, frame-rate stability, or input latency depending on the title. Auto HDR could add HDR output to some older SDR games without a developer patch. Neither feature applied to every old game: compatibility depended on Microsoft’s supported-title list, and Kinect-dependent games were a notable exception. See Microsoft’s backward-compatibility update.
What the March 2020 reveal had not settled
The March disclosure did not establish the console’s launch price, exact launch lineup, final retail availability, expansion-card price and availability, usable SSD space after system software, or the real-world performance of individual games. Microsoft announced the Series X and Series S launch for November 10, 2020 later that year; the launch announcement belongs to that later point in the timeline, not the March specification reveal.
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The specifications above refer to the original 2020 launch model. Microsoft’s current product page lists later configurations, including a 1TB digital model and a 2TB Galaxy Black edition, alongside a 1TB Carbon Black model. These later variants should not be confused with what Microsoft disclosed in March 2020.
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