The Secret War to Expand GPU Memory Limits

Phison vs. Sandisk: Two radical paths to break AI’s memory bottleneck.

GPU memory can’t keep up with AI model growth, so Phison and Sandisk offer two very different solutions. Phison’s aiDAPTIV+ is middleware that builds a virtual memory pool from GPU RAM, CPU DRAM, and fast SSDs, letting cheaper GPUs run models up to 70B parameters—ideal for smaller AI setups. Sandisk’s HBF, on the other hand, is a new NAND-based memory stack built into the GPU itself, promising higher speed but requiring deep hardware integration. Phison targets cost-efficient flexibility, while Sandisk bets on raw power for hyperscalers. Both reshape how we think about VRAM.

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