HP EliteBook Ultra G1q 14 laptop review: High expectations for Windows on ARM

[RobertJasiek]

"desktop RAM" is miles away from CPU physically

By your argument, every LPDDR5 should be faster than desktop RAM. Reality: LPDDR5 latency is ca. 3 to 5 times slower than the fastest desktop RAM.

The speed of electrons is ~3 * 10^8 m/s. The distance to desktop RAM is ~0.05m, in both directions together ~0.1m. So per 1s, electrons travel ~3 * 10^9 times from / to RAM for the travel duration 1/3ns. Insignificantly small relative to aforementioned RAM latency values from 7.4ns to 150ns?

[uipogin]

"AIDA64 / Memory Latency 7.8ns"
I continue to disbelieve these Snapdragon values that are about 4 times faster than the fastest desktop RAM latencies! Without evidence by application testing, such as database queries, confirming 4x speed, this must be a measurement error of the benchmarking tool.

Snapdragon phones had 7-8ns memory latency on LPDDR5 since like many years ago. Just measured mine, 8.1ns