HBM3e
The third-generation enhanced High Bandwidth Memory standard, offering higher memory bandwidth and capacity. It is the mainstream memory solution for current high-end GPU accelerators and directly affects the batch size achievable in large-model inference.
Timeline (last 90 days)
Because the Max configuration uses MLA to compress the KV cache, it can fit a larger expert array into HBM3e memory, increasing the equivalent batch size by 30% to 40% compared with similar models.
Most enterprises planning private GPU clusters for 2026 MoE models incorrectly estimate HBM3e memory requirements based on the number of active parameters per token, rather than planning based on the full resident checkpoint plus concurrent PagedAttention KV cache.
The formula for total VRAM requirements for MoE models in production is: VRAM_total = (VRAM_weights + VRAM_KV(C) + VRAM_CUDA) × 1.06, which includes at least a 6% HBM3e fragmentation buffer.
当前主流的HBM3e单堆栈带宽可达1TB/s以上，一颗AI芯片通常会并排封装6到8个HBM堆栈。
The 8-GPU configuration of the HGX H200 interconnects 8 H200 GPUs with high bandwidth via NVLink and NVSwitch, with a total VRAM of up to 1.1 TB (HBM3e).
All Facts (6)
每颗Blackwell GPU拥有高达192GB HBM3e显存
90%UnverifiedBecause the Max configuration uses MLA to compress the KV cache, it can fit a larger expert array into HBM3e memory, increasing the equivalent batch size by 30% to 40% compared with similar models.
50%UnverifiedMost enterprises planning private GPU clusters for 2026 MoE models incorrectly estimate HBM3e memory requirements based on the number of active parameters per token, rather than planning based on the full resident checkpoint plus concurrent PagedAttention KV cache.
50%UnverifiedThe formula for total VRAM requirements for MoE models in production is: VRAM_total = (VRAM_weights + VRAM_KV(C) + VRAM_CUDA) × 1.06, which includes at least a 6% HBM3e fragmentation buffer.
50%Unverified当前主流的HBM3e单堆栈带宽可达1TB/s以上，一颗AI芯片通常会并排封装6到8个HBM堆栈。
50%UnverifiedThe 8-GPU configuration of the HGX H200 interconnects 8 H200 GPUs with high bandwidth via NVLink and NVSwitch, with a total VRAM of up to 1.1 TB (HBM3e).
50%