GeForce RTX 5090 vs Radeon Instinct MI8
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 | GCN 3.0 (2014−2019) | Blackwell 2.0 (2025) |
| GPU code name | Fiji | GB202 |
| Market segment | Workstation | Desktop |
| Release date | 12 December 2016 (7 years ago) | 2025 |
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 | 4096 | 21760 |
| Core clock speed | 1000 MHz | 2235 MHz |
| Boost clock speed | no data | 2520 MHz |
| Number of transistors | 8,900 million | no data |
| Manufacturing process technology | 28 nm | 0 nm |
| Power consumption (TDP) | 175 Watt | 500 Watt |
| Texture fill rate | 256.0 | 1,714 |
| Floating-point processing power | 8.192 TFLOPS | 109.7 TFLOPS |
| ROPs | 64 | 192 |
| TMUs | 256 | 680 |
| Tensor Cores | no data | 680 |
| Ray Tracing Cores | no data | 170 |
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 x16 | PCIe 5.0 x16 |
| Length | 152 mm | 304 mm |
| Width | 2-slot | 3-slot |
| Supplementary power connectors | 1x 8-pin | 1x 16-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 | HBM | GDDR7 |
| Maximum RAM amount | 4 GB | 32 GB |
| Memory bus width | 4096 Bit | 512 Bit |
| Memory clock speed | 500 MHz | 1750 MHz |
| Memory bandwidth | 512.0 GB/s | 1.42 TB/s |
Connectivity and outputs
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | No outputs | 1x HDMI 2.1, 3x DisplayPort 1.4a |
| HDMI | - | + |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_0) | 12 Ultimate (12_2) |
| Shader Model | 6.3 | 6.8 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 3.0 |
| Vulkan | 1.2.131 | 1.3 |
| CUDA | - | 10.1 |
Pros & cons summary
| Maximum RAM amount | 4 GB | 32 GB |
| Power consumption (TDP) | 175 Watt | 500 Watt |
Instinct MI8 has 185.7% lower power consumption.
RTX 5090, on the other hand, has a 700% higher maximum VRAM amount.
We couldn't decide between Radeon Instinct MI8 and GeForce RTX 5090. We've got no test results to judge.
Be aware that Radeon Instinct MI8 is a workstation graphics card while GeForce RTX 5090 is a desktop one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
