Radeon RX 7400 vs R5 M420
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1086 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | GCN 1.0 (2012−2020) | RDNA 3.0 (2022−2025) |
| GPU code name | Jet | Navi 33 |
| Market segment | Laptop | Desktop |
| Release date | 15 May 2016 (9 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 | 320 | 1792 |
| Core clock speed | 780 MHz | 1452 MHz |
| Boost clock speed | 850 MHz | 2300 MHz |
| Number of transistors | 690 million | 13,300 million |
| Manufacturing process technology | 28 nm | 6 nm |
| Power consumption (TDP) | no data | 43 Watt |
| Texture fill rate | 17.00 | 257.6 |
| Floating-point processing power | 0.544 TFLOPS | 16.49 TFLOPS |
| ROPs | 8 | 64 |
| TMUs | 20 | 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 3.0 x8 | PCIe 4.0 x8 |
| Width | no data | 2-slot |
| Supplementary power connectors | no data | 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 | DDR3 | GDDR6 |
| Maximum RAM amount | 4 GB | 8 GB |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 1000 MHz | 2250 MHz |
| Memory bandwidth | 16 GB/s | 288.0 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 | No outputs | 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 (11_1) | 12 Ultimate (12_2) |
| Shader Model | 5.1 | 6.8 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.2 |
| Vulkan | 1.2.131 | 1.3 |
Pros & cons summary
| Recency | 15 May 2016 | 8 August 2025 |
| Maximum RAM amount | 4 GB | 8 GB |
| Chip lithography | 28 nm | 6 nm |
RX 7400 has an age advantage of 9 years, a 100% higher maximum VRAM amount, and a 366.7% more advanced lithography process.
We couldn't decide between Radeon R5 M420 and Radeon RX 7400. We've got no test results to judge.
Be aware that Radeon R5 M420 is a notebook graphics card while Radeon RX 7400 is a desktop one.
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
