Best Pick

Samsung 2666DDR4S64P

79 Best Value Score
64GB (2×32GB)DDR42666 MT/sCL19SODIMM
Why we recommend this

This 64GB DDR4 kit delivers a straightforward capacity upgrade with JEDEC-compliant 2666 MT/s CL19 operation at 1.2V, backed by a lifetime warranty and advanced replacement program. Its broad compatibility spans 2018-2020 iMacs and Mac minis alongside mainstream PC laptops, making it a reliable drop-in solution for aging systems. This kit is best for iMac or Mac mini users who need to extend the life of their machine for heavy multitasking and memory-intensive productivity workloads.

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Great Alternatives

These options also score highly and may better suit your specific needs

Samsung M471A2K43CB1-CTD

61.8 Best Value Score
16GB (1×16GB)DDR42666 MT/sCL19SODIMM
Why we recommend this ▼

Operating at a standard 1.2V with a 2666 MT/s speed and CL19 latency, this 16GB Samsung DDR4 SODIMM module provides a reliable capacity upgrade for older laptops. Its dual-rank 2Rx8 configuration can offer a slight performance edge in certain workloads compared to single-rank modules. This memory is best for users seeking a straightforward, cost-effective way to boost multitasking capability in aging notebooks that don't support newer DDR5 standards.

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Samsung M471A2K43

56.5 Best Value Score
32GB (2×16GB)DDR42666 MT/sCL19SODIMM
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