What is SO-DIMM?
Small Outline DIMM used in laptops
SO-DIMM is a smaller RAM module than desktop DIMM, typically 4–64GB, and usually upgradeable in laptops
What is LPDDR RAM?
Low Power DDR, soldered RAM
LPDDR is used in ultrabooks and mobile devices, energy-efficient, soldered to the motherboard, and cannot be upgraded
Difference between upgradeable RAM and soldered RAM?
Upgradeable can be replaced or added; soldered cannot
Upgradeable RAM (SO-DIMM) allows increasing capacity; soldered RAM (LPDDR) is fixed, common in ultrathin laptops
Which laptops commonly use SO-DIMM?
Business and gaming laptops
These laptops prioritize upgrade flexibility and performance; SO-DIMM slots allow RAM expansion
Which laptops commonly use soldered LPDDR?
Ultrabooks and MacBooks
LPDDR is soldered to save space and power, common in thin, light laptops
What is single-channel RAM?
Using one RAM module
Single-channel has one communication path to the CPU, slower compared to dual-channel configurations
What is dual-channel RAM?
Using two RAM modules of the same size
Dual-channel doubles the memory bandwidth, improving performance for gaming, multitasking, or heavy workloads.
Why use dual-channel over single-channel?
Higher memory throughput and better system performance
Two modules allow CPU to read/write on both channels simultaneously, making system more responsive
