Proof of Memory is live

How fast can your AI remember?

Benchmark, verify and understand the memory powering every AI workload.

$HBM is liveBuy $HBMExplorer
Runs onNVIDIAAMDAppleIntelQualcommProven onRobinhoodRobinhood Chain

DRAM die

24Gb

Sixteen per stack. Your bits live here.

Microbumps + TSVs

55µm

Vertical wires carry every bit between dies.

Base logic die

16channels

The interface every read and write goes through.

Silicon interposer

1,024bit bus

Millimetres from the processor.

The test

60seconds

  1. READ
  2. WRITE
  3. COPY
  4. RANDOM
  5. SUSTAIN

Real WebGPU kernels over 512 MiB, measured in your browser.

The Stack

—dies

Every run becomes a die. Sixty-four make a layer.

Open The Stack

Leaderboard

Ranked inside your class.

See every class

HBMProof of Memory

Your turn.

About a minute, in your browser.

Publishes your scores and GPU model. Nothing personal. How it works