What are the alternatives to the Crucial CT51264AA667 4GB 240-pin DIMM DDR2 PC2-5300 Memory Module?

Crucial CT51264AA667 4GB 240-pin DIMM DDR2 PC2-5300 Memory Module competes with other Memory & RAM products on SpecPicks. Use our Compare tool to view specs side-by-side, or browse the full Memory & RAM category for alternatives.

Crucial

Crucial CT51264AA667 4GB 240-pin DIMM DDR2 PC2-5300 Memory Module

Name: Crucial CT51264AA667 4GB 240-pin DIMM DDR2 PC2-5300 Memory Module
Brand: Crucial
SKU: B001RB21JO
Price: 65.98 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-20

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$65.98

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🛒 See live eBay price Also on Amazon — View Current Price → Compare to similar memory & ram

*Price sourced from Amazon.com. Last updated 2026-08-23. Price and availability subject to change.

Bottom line: The Crucial CT51264AA667 4GB 240-pin DIMM DDR2 PC2-5300 Memory Module is a specs-and-price decision rather than a crowd-consensus one in the memory & ram category, priced around $65.98. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.

Pros & Cons

Pros

✓ 240-pin DIMMs are used to provide DDR2 SDRAM memory for desktop computers
✓ Backed by Crucial's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Every day, you rely on your computer to make your life easier. A Crucial DRAM upgrade can help your system run faster, and it's one of the easiest, most affordable ways to improve system performance. Reap the benefits doing everything from everyday system tasks to mission-critical applications. For over 12 years, Crucial has been recognized as a leader in DRAM upgrades. Our products help people achieve greater system performance through improved productivity, reliability, and speed. As part of one of the world’s largest DRAM manufacturers—Micron Technology—our long tenure of engineering and…

SpecPicks Verdict

SpecPicks scored Crucial CT51264AA667 4GB 240-pin DIMM DDR2 PC2-5300 Memory Module using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the memory & ram category. Crucial's memory & ram lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for memory & ram of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Key Features

240-pin DIMMs are used to provide DDR2 SDRAM memory for desktop computers
To use DDR2 memory, your system motherboard must have 240-pin DIMM slots and a DDR2-enabled chipset
Single Module

Full Specifications

Brand	Crucial
Voltage	1.8 volts
RAM Size	4096 MB
Model Name	CT51264AA667
Form Factor	DIMM
Memory Speed	667 MHz
Model Number	CT51264AA667
Number of Pins	240
Mfr Part Number	CT51264AA667
Number of Items	1
Number of Packs	1
Memory Generation	DDR2
Compatible Devices	Desktop
Data Transfer Rate	667 MHz
Memory Form Factor	DIMM
Additional Features	Lightweight
Computer Memory Size	4096 MB
Warranty Description	Limited Lifetime
RAM Memory Technology	DDR2 667
Global Trade Identification Number	00649528743817

Ready to buy?

Crucial CT51264AA667 4GB 240-pin DIMM DDR2 PC2-5300 Memory Module is sold on the used and vintage market, where eBay carries the live inventory — Amazon does not stock this part. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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*Price sourced from Amazon.com. Last updated 2026-08-23. Price and availability subject to change.