Radeon RX 7400 vs RX 6900
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 34 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 19.06 | no data |
| Architecture | RDNA 2.0 (2020−2025) | RDNA 3.0 (2022−2025) |
| GPU code name | Navi 21 | Navi 33 |
| Market segment | Desktop | Desktop |
| Release date | 28 October 2020 (4 years ago) | 8 August 2025 (recently) |
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 | 4608 | 1792 |
| Core clock speed | no data | 1452 MHz |
| Boost clock speed | 2105 MHz | 2300 MHz |
| Number of transistors | 23,000 million | 13,300 million |
| Manufacturing process technology | 7 nm | 6 nm |
| Power consumption (TDP) | 255 Watt | 43 Watt |
| Texture fill rate | 606.2 | 257.6 |
| Floating-point processing power | 19.4 TFLOPS | 16.49 TFLOPS |
| ROPs | 64 | 64 |
| TMUs | 288 | 112 |
| Ray Tracing Cores | no data | 28 |
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 4.0 x16 | PCIe 4.0 x8 |
| Width | 2-slot | 2-slot |
| Supplementary power connectors | 2x 8-pin | 1x 6-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 | GDDR6 | GDDR6 |
| Maximum RAM amount | 16 GB | 8 GB |
| Memory bus width | 256 Bit | 128 Bit |
| Memory clock speed | 16 GB/s | 2250 MHz |
| Memory bandwidth | 512.0 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, 2x DisplayPort, 1x USB Type-C | 1x HDMI 2.1a, 3x DisplayPort 2.1 |
| HDMI | + | + |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 Ultimate (12_2) | 12 Ultimate (12_2) |
| Shader Model | 6.5 | 6.8 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 2.2 |
| Vulkan | 1.2 | 1.3 |
Pros & cons summary
| Recency | 28 October 2020 | 8 August 2025 |
| Maximum RAM amount | 16 GB | 8 GB |
| Chip lithography | 7 nm | 6 nm |
| Power consumption (TDP) | 255 Watt | 43 Watt |
RX 6900 has a 100% higher maximum VRAM amount.
RX 7400, on the other hand, has an age advantage of 4 years, a 16.7% more advanced lithography process, and 493% lower power consumption.
We couldn't decide between Radeon RX 6900 and Radeon RX 7400. We've got no test results to judge.
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