Arc B390 vs Radeon RX 550X 640SP
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 | GCN 4.0 (2016−2020) | Xe3-LPG (2026) |
| GPU code name | Baffin | Panther Lake |
| Market segment | Desktop | Laptop |
| Release date | 11 April 2018 (7 years ago) | 27 January 2026 (less than a year ago) |
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 | 640 | 1536 |
| Core clock speed | 1019 MHz | 300 MHz |
| Boost clock speed | 1071 MHz | 2500 MHz |
| Number of transistors | 3,000 million | no data |
| Manufacturing process technology | 14 nm | 3 nm |
| Power consumption (TDP) | 60 Watt | 80 Watt |
| Texture fill rate | 42.84 | 120.0 |
| Floating-point processing power | 1.371 TFLOPS | 7.68 TFLOPS |
| ROPs | 16 | 24 |
| TMUs | 40 | 48 |
| Ray Tracing Cores | no data | 12 |
| L1 Cache | 160 KB | 768 KB |
| L2 Cache | 1024 KB | 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 | PCIe 3.0 x8 | IGP |
| Length | 145 mm | no data |
| Width | 2-slot | 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 | GDDR5 | System Shared |
| Maximum RAM amount | 2 GB | System Shared |
| Memory bus width | 128 Bit | System Shared |
| Memory clock speed | 1500 MHz | System Shared |
| Memory bandwidth | 96 GB/s | no data |
| Shared memory | - | + |
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 DVI, 1x HDMI, 1x DisplayPort | Portable Device Dependent |
| HDMI | + | - |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_0) | 12 Ultimate (12_2) |
| Shader Model | 6.4 | 6.9 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 3.0 |
| Vulkan | 1.2.131 | 1.4 |
Pros & cons summary
| Recency | 11 April 2018 | 27 January 2026 |
| Chip lithography | 14 nm | 3 nm |
| Power consumption (TDP) | 60 Watt | 80 Watt |
RX 550X 640SP has 33.3% lower power consumption.
Arc B390, on the other hand, has an age advantage of 7 years, and a 366.7% more advanced lithography process.
We couldn't decide between Radeon RX 550X 640SP and Arc B390. We've got no test results to judge.
Be aware that Radeon RX 550X 640SP is a desktop graphics card while Arc B390 is a notebook one.
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