Nvidia uses a memory 'sandwich' technique to cram 84GB GDDR7 memory on RTX Pro 5500 Blackwell GPU — weird 416-bit memory bus leaves me puzzled, though

Nvidia fits 28 GDDR7 memory chips onto one workstation graphics cardThe RTX PRO 5500 carries 84 GB of onboard GDDR7 memoryFourteen memory chips sit above the PCB and fourteen belowNvidia has rolled out a new professional graphics card that carries an unusually generous pool of onboard memory for its class.Nvidia says the RTX Pro 5500 workstation edition is built on Blackwell architecture and ships with a full 84 GB of GDDR7 memory.That memory is attached to a GB202 processor carrying 21,760 CUDA