Micron's memory wall chart. Compute up ~3x every two years, HBM bandwidth under 2x
r/LocalLLaMA
September 13, 2026 at 10:56 PM
📌 From Raghu Sreeramaneni's memory tutorial at hot chips 2026. top line is normalised tflops for tpu v3 through r200, bottom line is hbm2e through hbm4, both log scale, so the distance between them is a lot wider than it looks. The three boxes down the right are the fixes people are actually building. Memory beside the compute, memory closer on a shorter link, then multiply units inside the memory itself. Samsung has that last one shipping in lpddr5x and measured 3.01x tokens a second on llama ...
From Raghu Sreeramaneni's memory tutorial at hot chips 2026. top line is normalised tflops for tpu v3 through r200, bottom line is hbm2e through hbm4, both log scale, so the distance between them is a lot wider than it looks.
The three boxes down the right are the fixes people are actually building. Memory beside the compute, memory closer on a shorter link, then multiply units inside the memory itself. Samsung has that last one shipping in lpddr5x and measured 3.01x tokens a second on llama 3.1 8B.
Full analysis (this slide sits in the memory chapter): https://allaboutchips.com/#memory
[link] [comments]
![[link]](https://i.redd.it/4vi68qbhheph1.png){kind=link}
Read the full article at
r/LocalLLaMA
More in Models & Releases
Models & Releases
NVIDIA Unveils RTX PRO 5500 "Blackwell" Workstation GPU with 84 GB GDDR7 Memory
submitted by /u/Lumpy_Phase_9539 [link] [comments]
What happened to AI browsers?
AI browsers were supposedly going to kill Chrome/Safari, and help people quickly buy stuff, book tickets etc. at reasonable prices while avoiding ads. That was such a great sales pitch, but it has been just radio silence from then on. Ar...
[Bi-Weekly Megathread] Project Showcase
Do you have something you'd like to share with the r/LocalLLaMA community. This is the place for it! Recommendation on presentation: Please share plain english description of what your project does and why people should care about it Ho...