> 1) the ram is not integrated into the chip, per se, it's still discrete and soldered on a PCB right next to the CPU, and 2) the increased speed comes from additional memory channels built into the M-series CPUs
Thanks, I did not know this! I would have honestly have bought into Apple's marketing that the soldering is what allows them to make it more integrated and faster
You're welcome! In fairness to Apple, having shorter traces between the CPU and main memory does in fact decrease latency and power requirements. It's just not the only, or even the best, way to get more performance out of memory chips.
The CAMM2/LPCAMM2 standard is a new way of having replaceable memory which takes up less physical space and is faster, if you're interested. There are a few laptops (and desktops) out there using it already. It still only supports dual-channel memory, though.
As I said originally, my suspicion is that "200GB/s+ memory bandwidth!" might be good marketing copy and make for good synthetic benchmark results, but just isn't actually that beneficial for the average computer user in the real world. This could be why you don't see other computer manufacturers pursuing it, at least not in laptops.
Thanks, I did not know this! I would have honestly have bought into Apple's marketing that the soldering is what allows them to make it more integrated and faster