The meme don't make sense. An SRAM cache of that size would be so slow that you would most likely save clock cycles reading directly from RAM an not having a cache at all...
Smoolak
joined 3 years ago
I'm hosting a matrix server with a TURN server and it's fairly easy to selfhost. This sounds exaggerated.
One argument that hasn't been discussed here is the fact that Bethesda has been owned by Microsoft since 2021. It's likely that Microsoft had been planning to acquire the company for several years prior to the official purchase too.
I agree. When evaluating cache access latency, it is important to consider the entire read path rather than just the intrinsic access time of a single SRAM cell. Much of the latency arises from all the supporting operations required for a functioning cache, such as tag lookups, address decoding, and bitline traversal. As you pointed out, implementing an 8 GB SRAM cache on-die using current manufacturing technology would be extremely impractical. The physical size would lead to substantial wire delays and increased complexity in the indexing and associativity circuits. As a result, the access latency of such a large on-chip cache could actually exceed that of off-chip DRAM, which would defeat the main purpose of having on-die caches in the first place.