Samsung 16GB DDR4 PC4-21300 2666MHZ vs Crucial Pro Overclocking 32GB (2x16GB) DDR5 6400MHz RAM Comparison

The main differences between Samsung 16GB DDR4 PC4-21300 2666MHZ and Crucial Pro Overclocking 32GB (2x16GB) DDR5 6400MHz are in Speed, Size, CAS Latency and First Word Latency.

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Samsung 16GB DDR4 PC4-21300 2666MHZ	Crucial Pro Overclocking 32GB (2x16GB) DDR5 6400MHz
Prices (Change region) In Stock $112.67 Last updated 52 minutes ago. In Stock Free shipping $127.70	Prices (Change region) Out of Stock $239.99 In Stock $484.86 Last updated 56 minutes ago. Out of Stock Free shipping $548.00
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Brand SAMSUNG	Brand Crucial
Model M378A2K43CB1-CTD	Model CP2K16G64C32U5B
Release Date -	Release Date 📅 October 2025
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews ★★★★☆ (72 reviews) Add a product review
Price history View Details ►	Price history View Details ►
Price/GB $7.04	Price/GB $7.50
GB/$1 0.14	GB/$1 0.13
Samsung B-Die No	Samsung B-Die No
Compatible PC parts Motherboards ►	Compatible PC parts Motherboards ►
Type 288-pin DDR4 DIMM	Type 288-pin DDR5 DIMM
Speed DDR4-2666 MHz	Speed DDR5-6400 MHz
Size 16GB (1 x 16GB)	Size 32GB (2 x 16GB)
CAS Latency 19	CAS Latency 32
Timing -	Timing 32-40-40-103
First Word Latency 14.25 ns	First Word Latency 10 ns
Voltage 1.2 V	Voltage 1.35 V
Heat Spreader No	Heat Spreader Yes
ECC Support No	ECC Support No
Color -	Color Black