3 ms·
Check out PCB back drilling. It's a process where you remove a few hundred microns from the vias that are used to connect GDDR RAMs to the GPUs, to avoid reflec
by tverbeure 3y ago
Check out PCB back drilling. It's a process where you remove a few hundred microns from the vias that are used to connect GDDR RAMs to the GPUs, to avoid reflections due to the impedance mismatch that's caused by the stub.
When you have a pulse coded signal traveling at close to 10GHz, everything becomes an antenna. The technical problem is that you can't do this with a flimsy connector like the ones used for DIMMs. The reason GDDR can have a bandwidth per pin that is 4 times higher than regular DDR is because they are soldered down on the PCB.