Radeon PRO W7900D 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 5.0 (2026) | RDNA 3 (2023−2025) |
| GPU code name | MI450 256CU | Navi 31 |
| Market segment | Workstation | Workstation |
| Release date | 23 July 2026 (less than a year ago) | 28 November 2025 (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. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.
| Pipelines / CUDA cores | 32768 | 6144 |
| Core clock speed | 1000 MHz | 1327 MHz |
| Boost clock speed | 2400 MHz | 2156 MHz |
| Number of transistors | 320,000 million | 57.7 billion |
| Manufacturing process technology | 2 nm | 5 nm |
| Power consumption (TDP) | 2300 Watt | 295 Watt |
| Texture fill rate | 2,457.6 | 827.9 |
| Floating-point processing power | 157.3 TFLOPS | no data |
| ROPs | no data | 192 |
| TMUs | 1024 | 384 |
| Ray Tracing Cores | no data | 96 |
| L0 Cache | no data | 3 MB |
| L1 Cache | 8 MB | 3 MB |
| L2 Cache | 192 MB | 6 MB |
| L3 Cache | no data | 96 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 x16 |
| Length | no data | 280 mm |
| Width | EAM Module | 3-slot |
| Supplementary power connectors | None | 2x 8-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 | HBM4 | GDDR6 |
| Maximum RAM amount | 432 GB | 48 GB |
| Memory bus width | 24576 Bit | 384 Bit |
| Memory clock speed | 1900 MHz | 2250 MHz |
| Memory bandwidth | 23.3 TB/s | 864.0 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 | No outputs | 3x DisplayPort 2.1, 1x mini-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 | 3.0 | 2.0 |
| Vulkan | N/A | 1.4 |
Pros & cons summary
| Recency | 23 July 2026 | 28 November 2025 |
| Maximum RAM amount | 432 GB | 48 GB |
| Chip lithography | 2 nm | 5 nm |
| Power consumption (TDP) | 2300 Watt | 295 Watt |
Instinct MI455X has an age advantage of 7 months, a 800% higher maximum VRAM amount, and a 150% more advanced lithography process.
PRO W7900D, on the other hand, has 680% lower power consumption.
We couldn't decide between Radeon Instinct MI455X and Radeon PRO W7900D. We've got no test results to judge.
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