Steam Machine GPU vs GB10
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Blackwell 2.0 (2025−2026) | RDNA 3.0 (2022−2026) |
| GPU code name | GB20B | Navi 33 |
| Market segment | Workstation | Desktop |
| Release date | 27 August 2025 (less than a year ago) | 2026 |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 6144 | 1792 |
| Core clock speed | 1665 MHz | 1720 MHz |
| Boost clock speed | 2418 MHz | 2450 MHz |
| Number of transistors | no data | 13,300 million |
| Manufacturing process technology | 3 nm | 6 nm |
| Power consumption (TDP) | 140 Watt | 110 Watt |
| Texture fill rate | 928.5 | 274.4 |
| Floating-point processing power | 29.71 TFLOPS | 17.56 TFLOPS |
| ROPs | 48 | 64 |
| TMUs | 384 | 112 |
| Tensor Cores | 384 | no data |
| Ray Tracing Cores | 48 | 28 |
| L0 Cache | no data | 448 KB |
| L1 Cache | 12 MB | 512 KB |
| L2 Cache | 50 MB | 2 MB |
| L3 Cache | no data | 32 MB |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Interface | PCIe 5.0 x16 | no data |
| Length | 150 mm | 156 mm |
| Width | IGP | no data |
| Supplementary power connectors | None | None |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | LPDDR5X | GDDR6 |
| Maximum RAM amount | 128 GB | 8 GB |
| Memory bus width | 256 Bit | 128 Bit |
| Memory clock speed | 1067 MHz | 2250 MHz |
| Memory bandwidth | 273.2 GB/s | 288.0 GB/s |
| Resizable BAR | + | - |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | 1x HDMI | No outputs |
| HDMI | + | - |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | N/A | 12 Ultimate (12_2) |
| Shader Model | N/A | 6.8 |
| OpenGL | N/A | 4.6 |
| OpenCL | 3.0 | 2.2 |
| Vulkan | N/A | 1.4 |
| CUDA | 10.1 | - |
| DLSS | + | - |
Pros & cons summary
| Maximum RAM amount | 128 GB | 8 GB |
| Chip lithography | 3 nm | 6 nm |
| Power consumption (TDP) | 140 Watt | 110 Watt |
GB10 has a 1500% higher maximum VRAM amount, and a 100% more advanced lithography process.
Steam Machine GPU, on the other hand, has 27.3% lower power consumption.
We couldn't decide between GB10 and Steam Machine GPU. We've got no test results to judge.
Be aware that GB10 is a workstation graphics card while Steam Machine GPU is a desktop one.
Other comparisons
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