Unverified70% confidenceFactExact time
The current maximum capacity of a single HBM3e stack is approximately 36 GB, the DDR5 bus width is only 64 bits, whereas HBM can reach 4096 bits.
2
Sources
70%
Confidence
Long-term
Relevance
7/14/2026
First Seen
Sources
苹果M7 Ultra芯片曝光：1.5TB统一内存能否重塑本地AI推理格局
Related Claims
UnverifiedNVIDIA H100搭载的HBM3提供约3.35TB/s内存带宽，而DDR6预计单通道最高带宽约256GB/s83% similarVerifiedThe GB300 integrates HBM3e high-bandwidth memory, with a single-card capacity of up to 288GB and memory bandwidth exceeding 10TB/s79% similarVerifiedHBM3e single-stack bandwidth can reach 1.2 TB/s, which is 4–9 times the bandwidth of conventional GDDR6.79% similarUnverifiedThe M4 Max chip has a memory bandwidth of up to 546 GB/s, more than 4 times the memory bandwidth of mainstream DDR5 system memory.79% similarUnverifiedA single HBM3E stack can contain 8 to 12 layers of DRAM die, providing over 1 TB/s of bandwidth.77% similar
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