Technical Snapshot

The Corsair Mac Memory SODIMM DDR4 16GB (2x8GB) 2666MT/s SODIMM Intel XMP — CMSA16GX4M2A2666C18 is a DDR4 SO-DIMM memory module designed for laptops, mini PCs, and compact systems. Running at 2,666 MT/s with CL18-18-18-36 timings at 1.2V, it supports Intel XMP profiles for one-click speed optimization in compatible BIOS. The kit provides 16GB (2x8GB) of DDR4 memory . Backed by a Limited Lifetime warranty, this module is ideal for laptop upgrades, Intel NUC builds, and compact form factor PCs.

Use Case
Laptop upgrades, compact PC builds
Compatibility
DDR4 SO-DIMM laptop/mini-PC slot
Category
DDR4 SODIMM — Corsair Mac Memory SODIMM
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Corsair RAM
Corsair Mac Memory SODIMM

Mac Memory SODIMM DDR4 16GB (2x8GB) 2666MT/s SODIMM Intel XMP — CMSA16GX4M2A2666C18

DDR4 · SODIMM · 2,666 MT/s · CL18-18-18-36 · 16GB (2x8GB)

Memory transfer rate in megatransfers per second. Higher MT/s provides more bandwidth for CPU-bound workloads.
Speed 2,666 MT/s
Total kit capacity across all modules. Dual-channel kits double memory bandwidth.
Capacity 16GB (2x8GB)
CAS latency and full timing chain. Lower CL means faster first-byte access time.
Timings CL18-18-18-36
Overclocking profile for one-click speed optimization in compatible BIOS. XMP for Intel, EXPO for AMD.
Profile Intel XMP
MPNCMSA16GX4M2A2666C18
EAN0840006611486
CategoryMemory
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Memory Specifications

Memory TypeDDR4
Form FactorSODIMM
Total Capacity16GB (2x8GB)
Speed2,666 MT/s
TimingsCL18-18-18-36
Voltage1.2V
XMP/EXPO ProfileIntel XMP
Module Height30.0 mm
WarrantyLimited Lifetime

Full Specifications

Data sourced from Corsair product specifications
Memory
Product LineMac Memory SODIMM
Memory TypeDDR4
Form FactorSODIMM
Total Capacity16GB (2x8GB)
Module Count2
Module Capacity8GB
Speed2,666 MT/s
Timings & Voltage
TimingsCL18-18-18-36
Voltage1.2V
XMP/EXPO ProfileIntel XMP
Design
ColorBlack
Module Height30.0 mm
Product
BrandCorsair
MPNCMSA16GX4M2A2666C18
EAN0840006611486
WarrantyLimited Lifetime
Variantstandard
Physical
Weight0.037 kg
Package Dimensions13.0 x 7.5 x 1.3 cm

Support

Corsair Memory Compatibility ToolCheck motherboard compatibility for this module
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Corsair Mac Memory SODIMM DDR4 16GB (2x8GB) 2666MT/s SODIMM Intel XMP — CMSA16GX4M2A2666C18 DatasheetPDF · Technical specifications
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Frequently Asked Questions

What motherboards are compatible with this memory?

The Corsair Mac Memory SODIMM DDR4 16GB (2x8GB) 2666MT/s SODIMM Intel XMP — CMSA16GX4M2A2666C18 requires a DDR4-compatible motherboard. Compatible platforms include AMD AM4 (B550, X570, B450, etc.) and Intel LGA 1700 (B660, Z690) or LGA 1200 (B560, Z590). DDR4 is NOT compatible with DDR5 slots — they use different pin configurations. This SO-DIMM module fits laptops and compact PCs with DDR4 SO-DIMM slots.

Do I need to enable Intel XMP in BIOS?

Yes. Out of the box, DDR4 memory runs at JEDEC default speed (typically 2133 MT/s). To achieve the rated 2,666 MT/s with CL18-18-18-36 timings, enable Intel XMP in your motherboard BIOS. This is a one-click setting in the memory overclocking section.

Does this kit run in dual-channel mode?

Yes, the Corsair Mac Memory SODIMM DDR4 16GB (2x8GB) 2666MT/s SODIMM Intel XMP — CMSA16GX4M2A2666C18 includes 2 modules which enable dual-channel mode when installed in the correct DIMM slots (typically A2+B2 or slots 2+4). Dual-channel doubles memory bandwidth compared to single-channel configuration. Check your motherboard manual for optimal slot placement.

What is the form factor of this memory?

The Corsair Mac Memory SODIMM DDR4 16GB (2x8GB) 2666MT/s SODIMM Intel XMP — CMSA16GX4M2A2666C18 uses a SODIMM form factor. SO-DIMM modules are compact, designed for laptops and small form factor PCs.

What warranty does this memory come with?

The Corsair Mac Memory SODIMM DDR4 16GB (2x8GB) 2666MT/s SODIMM Intel XMP — CMSA16GX4M2A2666C18 comes with a Limited Lifetime warranty from Corsair.

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Product: Corsair Mac Memory SODIMM DDR4 16GB (2x8GB) 2666MT/s SODIMM Intel XMP — CMSA16GX4M2A2666C18
MPN: CMSA16GX4M2A2666C18
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