Radeon Instinct MI300X vs RX 7990 XTX
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | RDNA 3.0 (2022) | CDNA 3.0 |
| GPU code name | Navi 31 | Aqua Vanjaram |
| Market segment | Desktop | Desktop |
| Release date | 2023 (1 year ago) | 6 December 2023 (less than a year ago) |
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 6144 | 19456 |
| Boost clock speed | 3599 MHz | 2100 MHz |
| Number of transistors | 57,700 million | 153,000 million |
| Manufacturing process technology | 5 nm | 5 nm |
| Power consumption (TDP) | 405 Watt | 750 Watt |
| Texture fill rate | 1,382 | 2,554 |
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 5.0 x16 |
| Length | 287 mm | no data |
| Width | 3-slot | OAM Module |
| Supplementary power connectors | 3x 8-pin | 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 | HBM3 |
| Maximum RAM amount | 24 GB | 192 GB |
| Memory bus width | 384 Bit | 8192 Bit |
| Memory clock speed | 24 GB/s | 5 GB/s |
| Memory bandwidth | 1,152 GB/s | 5,171 GB/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 | 1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C | No outputs |
| HDMI | + | no data |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 Ultimate (12_2) | N/A |
| Shader Model | 6.7 | N/A |
| OpenGL | 4.6 | N/A |
| OpenCL | 2.2 | 3.0 |
| Vulkan | 1.3 | N/A |
Pros & cons summary
| Maximum RAM amount | 24 GB | 192 GB |
| Power consumption (TDP) | 405 Watt | 750 Watt |
We couldn't decide between Radeon RX 7990 XTX and Radeon Instinct MI300X. We've got no test results to judge.
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.
