Radeon RX 6400 vs RX 7800M
Aggregate performance score
We've compared Radeon RX 7800M with Radeon RX 6400, including specs and performance data.
7800M outperforms 6400 by a whopping 104% based on our aggregate benchmark results.
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 137 | 326 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 45.37 |
| Power efficiency | 15.89 | 26.43 |
| Architecture | RDNA 3.0 (2022−2025) | RDNA 2.0 (2020−2025) |
| GPU code name | Navi 32 | Navi 24 |
| Market segment | Laptop | Desktop |
| Release date | 11 September 2024 (1 year ago) | 19 January 2022 (3 years ago) |
| Launch price (MSRP) | no data | $159 |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Performance to price scatter graph
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 | 3840 | 768 |
| Core clock speed | 1295 MHz | 1923 MHz |
| Boost clock speed | 2335 MHz | 2321 MHz |
| Number of transistors | 28,100 million | 5,400 million |
| Manufacturing process technology | 5 nm | 6 nm |
| Power consumption (TDP) | 180 Watt | 53 Watt |
| Texture fill rate | 560.4 | 111.4 |
| Floating-point processing power | 35.87 TFLOPS | 3.565 TFLOPS |
| ROPs | 96 | 32 |
| TMUs | 240 | 48 |
| Ray Tracing Cores | 60 | 12 |
| L0 Cache | 960 KB | 192 KB |
| L1 Cache | 768 KB | 256 KB |
| L2 Cache | 4 MB | 1024 KB |
| L3 Cache | 48 MB | 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 4.0 x16 | PCIe 4.0 x4 |
| Width | no data | 1-slot |
| 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 | GDDR6 | GDDR6 |
| Maximum RAM amount | 12 GB | 4 GB |
| Memory bus width | 192 Bit | 64 Bit |
| Memory clock speed | 2250 MHz | 2000 MHz |
| Memory bandwidth | 432.0 GB/s | 128.0 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 | Portable Device Dependent | 1x HDMI 2.1, 1x DisplayPort 1.4a |
| 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 | 6.8 | 6.7 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.2 | 2.2 |
| Vulkan | 1.3 | 1.3 |
Synthetic benchmarks
Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark score.
Passmark
This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Pros & cons summary
| Performance score | 35.53 | 17.41 |
| Recency | 11 September 2024 | 19 January 2022 |
| Maximum RAM amount | 12 GB | 4 GB |
| Chip lithography | 5 nm | 6 nm |
| Power consumption (TDP) | 180 Watt | 53 Watt |
RX 7800M has a 104.1% higher aggregate performance score, an age advantage of 2 years, a 200% higher maximum VRAM amount, and a 20% more advanced lithography process.
RX 6400, on the other hand, has 239.6% lower power consumption.
The Radeon RX 7800M is our recommended choice as it beats the Radeon RX 6400 in performance tests.
Be aware that Radeon RX 7800M is a notebook graphics card while Radeon RX 6400 is a desktop one.
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