Final answer:
Today's lower-end computers most often use DDR4 RAM due to its higher bandwidth and lower power consumption compared to older standards like DDR3.
Step-by-step explanation:
The type of RAM memory used most often in today's lower-end computers is DDR4. DDR4 stands for Double Data Rate 4 and it has become the industry standard for mainstream computers due to its higher bandwidth and lower power consumption compared to its predecessor, DDR3. While DDR3 was common in older systems, it has been largely phased out for new systems in favor of DDR4. SDRAM and SRAM are older technologies and are not commonly used in the latest computer systems.