What are the alternatives to the Crucial 4GB Kit (2GBx2) DDR2 800MHz (PC2-6400) CL6 Unbuffered UDIMM 240-Pin…?

Crucial 4GB Kit (2GBx2) DDR2 800MHz (PC2-6400) CL6 Unbuffered UDIMM 240-Pin… 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.

Micron

Crucial 4GB Kit (2GBx2) DDR2 800MHz (PC2-6400) CL6 Unbuffered UDIMM 240-Pin Desktop Memory CT2KIT25664AA800 / CT2CP25664AA800

Name: Crucial 4GB Kit (2GBx2) DDR2 800MHz (PC2-6400) CL6 Unbuffered UDIMM 240-Pin Desktop Memory CT2KIT25664AA800 / CT2CP25664AA800
Brand: Micron
SKU: B0011A4UZE
Price: 37.99 USD
Availability: InStock

By SpecPicks Editorial · Verified 2026-07-06

$37.99

Buy on Amazon — $37.99 Compare to similar memory & ram

*Price sourced from Amazon.com. Last updated 2026-07-06. Price and availability subject to change.

Bottom line: The Crucial 4GB Kit (2GBx2) DDR2 800MHz (PC2-6400) CL6 Unbuffered UDIMM 240-Pin Desktop Memory CT2KIT25664AA800 / CT2CP25664AA800 is a niche pick — read recent reviews before buying in the memory & ram category, priced around $37.99. Read recent reviews carefully before committing.

CT2KIT25664AA800 is a 4GB kit consisting of (2) 2GB DDR2 Desktop modules that operates at speeds up to 800MHz and has a CL6 latency. It is Unbuffered and is non-ECC. It conforms to the industry standard UDIMM layout of 240 pins and is compatible with computers that take DDR2 UDIMM memory.

SpecPicks Verdict

SpecPicks classifies Crucial 4GB Kit (2GBx2) DDR2 800MHz (PC2-6400) CL6 Unbuffered UDIMM… as a niche pick — read recent reviews before buying in the memory & ram category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. Micron's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.

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.

Pros & Cons

Pros

✓ Increases system performance
✓ Backed by Micron'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

Key Features

Increases system performance
Easy to install
Premium quality memory from a trusted brand
100% Tested
Identical To: CT2CP25664AA800

Full Specifications

Brand	Micron
Voltage	1.8 Volts
RAM Size	4 GB
Model Name	Crucial
Unit Count	2.0 Count
Form Factor	DIMM 240-pin
Identical To	CT2CP25664AA800
Memory Speed	800 MHz
Model Number	CT2KIT25664AA800
Number of Pins	240
Mfr Part Number	CT2KIT25664AA800
Memory Generation	DDR2
Compatible Devices	Desktop
Data Transfer Rate	800 MHz

Ready to buy?

Crucial 4GB Kit (2GBx2) DDR2 800MHz (PC2-6400) CL6 Unbuffered UDIMM 240-Pin Desktop Memory CT2KIT25664AA800 / CT2CP25664AA800 is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Check price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-07-06. Price and availability subject to change.