Radeon RX 9050 4 GB vs Arc B390
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 300 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 20.77 | no data |
| Architecture | Xe3-LPG (2026) | RDNA 4.0 (2025−2026) |
| GPU code name | Panther Lake | Navi 44 |
| Market segment | Laptop | Desktop |
| Release date | 27 January 2026 (less than a year ago) | 28 July 2026 (recently) |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.
| Pipelines / CUDA cores | 1536 | 1024 |
| Core clock speed | 300 MHz | 1700 MHz |
| Boost clock speed | 2500 MHz | 2600 MHz |
| Number of transistors | no data | 29,700 million |
| Manufacturing process technology | 3 nm | 4 nm |
| Power consumption (TDP) | 80 Watt | 92 Watt |
| Texture fill rate | 120.0 | 166.4 |
| Floating-point processing power | 7.68 TFLOPS | 10.65 TFLOPS |
| ROPs | 24 | 64 |
| TMUs | 48 | 64 |
| Ray Tracing Cores | 12 | 16 |
| L0 Cache | no data | 256 KB |
| L1 Cache | 768 KB | no data |
| L2 Cache | 16 MB | 2 MB |
| L3 Cache | no data | 16 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 | IGP | PCIe 5.0 x16 |
| Width | no data | 2-slot |
| Supplementary power connectors | None | 1x 8-pin |
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 | System Shared | GDDR6 |
| Maximum RAM amount | System Shared | 4 GB |
| Memory bus width | System Shared | 64 Bit |
| Memory clock speed | System Shared | 2250 MHz |
| Memory bandwidth | no data | 144.0 GB/s |
| Shared memory | + | - |
| 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 | Portable Device Dependent | 1x HDMI 2.1b, 2x DisplayPort 2.1a |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 Ultimate (12_2) | 12 Ultimate (12_2) |
| Shader Model | 6.9 | 6.8 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 2.2 |
| Vulkan | 1.4 | 1.4 |
Pros & cons summary
| Recency | 27 January 2026 | 28 July 2026 |
| Chip lithography | 3 nm | 4 nm |
| Power consumption (TDP) | 80 Watt | 92 Watt |
Arc B390 has a 33% more advanced lithography process, and 15% lower power consumption.
RX 9050 4 GB, on the other hand, has an age advantage of 6 months.
We couldn't decide between Arc B390 and Radeon RX 9050 4 GB. We've got no test results to judge.
Be aware that Arc B390 is a notebook graphics card while Radeon RX 9050 4 GB is a desktop one.
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