Tag Archives: SODIMM

iMac 2019 Memory configuration

The 27 inch iMac for 2019 (5K, 2019) introduced DDR4 memory at the 2666 MHz speed, and an upper limit of 128 GB RAM. DDR4-2666 (PC4-21300) non ECC SODIMMs. Apple originally stated a 64 GB limit, however 32 GB modules … Continue reading

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Glossary of memory terms and definitions

Types of RAM: Memory Terminology: This is a simplified overview of RAM terms and definitions 100 pin memoryUsed primarily in laser printers, 100 pin SIMM memory is not compatible with other formats. CAS Latency:To oversimplify a complex discussion, the main … Continue reading

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Q. How do I install RAM in a PC Notebook?

The RAM memory in most notebook computers is user-upgradeable. Almost all notebook machines use SODIMMs (Small Outline Dual Inline Memory Modules). Part of the trick is to discover where the memory modules are located in a notebook machine. The best … Continue reading

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Q. How do I install RAM in a Mac?

Memory in most Macintoshes is user-upgradeable. The bottom of this post has links to the Apple instructions for specific models.  Here are general instructions for installation on modern Macs. In machines with SODIMMs, there are two main ways to insert … Continue reading

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Q. What Memory and Drives fit in my iMac PowerPC?

The Apple iMac has shipped in several versions.  The earliest ones ran the PowerPC processors, G3, G4 and G5. Lists of RAM and drive compatibility for all Macs Model / Identifier CPU/ Speed/ Screen/ Date/ Designation RAM Type & Speed … Continue reading

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