Radeon PRO W7400 vs Instinct MI455X
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 | CDNA 5 (2026) | RDNA 3 (2023−2025) |
| GPU code name | MI450 256CU | Navi 33 |
| Market segment | Workstation | Workstation |
| Release date | 23 July 2026 (less than a year ago) | 3 August 2025 (1 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. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.
| Pipelines / CUDA cores | 32768 | 1792 |
| Core clock speed | 1000 MHz | 330 MHz |
| Boost clock speed | 2400 MHz | 1100 MHz |
| Number of transistors | 320.0 billion | 13.3 billion |
| Manufacturing process technology | 2 nm | 6 nm |
| Power consumption (TDP) | 2500 Watt | 55 Watt |
| Texture fill rate | 2,457.6 | 123.2 |
| ROPs | no data | 64 |
| TMUs | 1024 | 112 |
| Ray Tracing Cores | no data | 28 |
| L0 Cache | no data | 448 KB |
| L1 Cache | 16 MB | 512 KB |
| L2 Cache | 192 MB | 2 MB |
| L3 Cache | no data | 32 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 6.0 x16 | PCIe 4.0 x8 |
| Length | no data | 168 mm |
| Width | EAM Module | 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 | HBM4 | GDDR6 |
| Maximum RAM amount | 432 GB | 8 GB |
| Memory bus width | 24576 Bit | 128 Bit |
| Memory clock speed | 1900 MHz | 1350 MHz |
| Memory bandwidth | 23.3 TB/s | 172.8 GB/s |
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 | 4x DisplayPort 2.1 |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | N/A | 12 Ultimate (12_2) |
| Shader Model | N/A | 6.9 |
| OpenGL | N/A | 4.6 |
| OpenCL | 2.0 | 2.0 |
| Vulkan | N/A | 1.4 |
Pros & cons summary
| Recency | 23 July 2026 | 3 August 2025 |
| Maximum RAM amount | 432 GB | 8 GB |
| Chip lithography | 2 nm | 6 nm |
| Power consumption (TDP) | 2500 Watt | 55 Watt |
Instinct MI455X has an age advantage of 11 months, a 5300% higher maximum VRAM amount, and a 200% more advanced lithography process.
PRO W7400, on the other hand, has 4445% lower power consumption.
We couldn't decide between Instinct MI455X and Radeon PRO W7400. We've got no test results to judge.
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