Unverified50% confidenceFactExact time
The LPDDR5x unified memory bandwidth of the DGX Spark is approximately 273 GB/s, which is orders of magnitude lower than the HBM3e used in data center products (up to 8 TB/s per GPU).
1
Sources
50%
Confidence
Long-term
Relevance
8/7/2026
First Seen
Sources
Related Claims
UnverifiedThe memory bandwidth of Spark and M4 Pro is 273 GB/s, while Halo's is slightly lower at 256 GB/s.77% similarUnverifiedThe combined unified memory of two DGX Sparks totals approximately 256 GB.76% similarUnverifiedThe 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.75% 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.74% similar
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