AMD Instinct MI250X

The AMD Instinct MI250X is a workstation graphics card that launched in Q4 2021. It is built on the CDNA 2.0 GPU microarchitecture (codename Aldebaran) and is manufactured on a 6 nm process.

Memory

The Instinct MI250X has 128 GB of HBM2e memory, with a 1,600 MHz memory clock and a 8,192 bit interface. This gives it a memory bandwidth of 3.28 Tb/s, which affects how fast it can transfer data to and from memory. GPU memory stores temporary data that helps the GPU with complex math and graphics operations. More memory is generally better, as not having enough can cause performance bottlenecks.

Cores and Clock Speeds

The Instinct MI250X includes 14,080 stream processors (SPs), the processing units for handling parallel computing tasks. The GPU operates at a core clock speed of 1,000 MHz and can dynamically boost its clock speed up to 1,700 MHz. Complementing the processing units are 880 texture mapping units (TMUs) for efficient texture filtering.

Compatibility & Power Consumption

The Instinct MI250X occupies 2 PCIe expansion slots. AMD recommends a power supply of at least 900 W to handle the GPU's thermal design power (TDP) of 500 W.