3 ms·
> SRAM has virtually stopped scaling in new nodes. But there are several 1T memories that are still scaling, more or less — eDRAM, MRAM, etc. Is there anything
by addaon 1y ago
> SRAM has virtually stopped scaling in new nodes.
But there are several 1T memories that are still scaling, more or less — eDRAM, MRAM, etc. Is there anything preventing their general architecture from moving to a 1T technology once the density advantages outweigh the need for pipelining to hide access time?
- aurareturn 1y agoI’m pretty sure that HBM4 can be 20-30x faster in terms of bandwidth than eDRAM. That makes eDRAM not an option for AI workloads since bandwidth is the main bottleneck.
- addaon 1y agoHBM4 is limited to a few thousand bits of width per stack. eDRAM bandwidth scales with chip area. A full-wafer chip could have astonishing bandwidth.