March 01, 2024

Random-access memory - Wikipedia

RAM is a common computing acronym that stands for random-access memory. Sometimes it's called PC memory or just memory. In essence, RAM is your computer or laptop's short-term memory. It's where the data is stored that your computer processor needs to run your applications and open your files.


What is the purpose of RAM?
Random access memory (RAM) is the hardware in a computing device that provides temporary storage for the operating system (OS), software programs and any other data in current use so they're quickly available to the device's processor.
Does RAM mean faster?
Yes, RAM speed does matter. Faster RAM speeds allow for quicker transfer of data from the central processing unit (CPU) to the RAM, which enhances your computer's performance, especially in tasks that require heavy computation. However, the impact might not be noticeable in day-to-day computing tasks.
How much RAM is good enough?
Generally, we recommend 8GB of RAM for casual computer usage and internet browsing, 16GB for spreadsheetsand other office programs, and at least 32GB for gamers and multimedia creators.
What does RAM do?
RAM allows your computer to perform most of its everyday tasks, such as loading applications, browsing the internet, editing a spreadsheet, or experiencing the latest game. Memory also allows you to switch quickly among these tasks while also remembering where you are in each task.
DDR4 versus DDR3 RAM
DDR4 is not just more power efficient — it's a lot faster, too. DDR3 specifications range between 800 to 2,133 MTps (millions of transfers per second). In comparison, DDR4 RAM ranges between 2,133 to 3,200 MTps, not to mention the faster kits available through XMP and overclocking.
Can you use DDR3 in DDR4 slot?
Every DDR generation is different from the others. DDR4 is not backward-compatible with DDR3 so a DDR4 DIMM will not fit on a DDR3 DIMM slot. Not only is the key notch of each DDR generation different, but the DDR4 pin size and arrangement is different from DDR3.
DDR4 and DDR5 Key Differences
One of the main differences between DDR4 and DDR5 RAM is speed. The JEDEC spec of DDR4 operates at effective speeds of up to 3200MHz, up from its initial 2133MHz at launch, while DDR5 RAM can operate at effective speeds of up to 6400Mhz.
DDR6 to be launched in 2024/25
Samsung has already announced that it is currently working on finalizing the DDR6 memory standard together with the other JEDEC members from the circle of DRAM and SoC manufacturers. According to the manufacturer, this is expected in the course of 2024, but no later than 2025.