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Crucial 4GB Single DDR3 1600 MT/s PC3-12800 CL11 Unbuffered UDIMM 240-Pin Desktop Memory Module CT51264BA160B
Crucial

Crucial 4GB Single DDR3 1600 MT/s PC3-12800 CL11 Unbuffered UDIMM 240-Pin Desktop Memory Module CT51264BA160B

Bottom line: The Crucial 4GB Single DDR3 1600 MT/s PC3-12800 CL11 Unbuffered UDIMM: Rated up to 1600 MT/s (PC3-12800) for DDR3 UDIMM desktops; main trade-off: 4GB alone is tight for modern browsers and games; plan on adding more.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Rated up to 1600 MT/s (PC3-12800) for DDR3 UDIMM desktops
  • ✓ Standard 240-pin UDIMM layout fits desktop slots built for DDR3 UDIMM
  • ✓ Unbuffered non-ECC design matches what consumer desktop boards expect
  • ✓ Single 4GB stick fills an empty slot or replaces a failed module
  • ✓ Each module is 100% tested by Crucial; exact part number eases matching

Cons

  • ✗ 4GB alone is tight for modern browsers and games; plan on adding more
  • ✗ One stick runs single-channel unless paired with a matching module
  • ✗ Non-ECC, so not for servers or workstations that require ECC RAM
  • ✗ Desktop DDR3 only: no fit for laptop SO-DIMM or DDR4/DDR5 boards

Manufacturer description

The Crucial CT51264BA160B is a single 4GB DDR3 desktop memory module for older PCs that are short on RAM or have a failed stick. It runs at up to 1600 MT/s (PC3-12800) with CL11 latency. It uses the standard 240-pin UDIMM layout, so it fits any desktop that takes unbuffered DDR3 UDIMM memory. This is unbuffered, non-ECC memory, the type consumer desktop motherboards expect. If your board has an empty DDR3 slot, you can add this stick for more memory. If you are repairing a system, you can use it to replace a dead module. To keep timings consistent, pair it with a second CT51264BA160B so the…

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SpecPicks Verdict

SpecPicks scored Crucial 4GB Single DDR3 1600 MT/s PC3-12800 CL11 Unbuffered UDIMM… using a rating × review-volume × price-fit model applied to published specs and reviews 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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will the Crucial CT51264BA160B work in my desktop?

It works in desktops that accept 240-pin DDR3 UDIMM memory that is unbuffered and non-ECC. Check your motherboard manual or the manufacturer's memory support list to confirm DDR3 UDIMM support before you buy.

Can I use this RAM in a laptop?

No. This is a 240-pin desktop UDIMM. Laptops use the smaller SO-DIMM form factor, so this module will not physically fit a laptop memory slot.

Is this memory ECC or registered?

Neither. The CT51264BA160B is unbuffered and non-ECC. Servers and workstations that require registered (RDIMM) or ECC memory will not accept it.

Can I mix it with the DDR3 sticks already in my PC?

Mixed DDR3 modules usually run at the speed and timings of the slowest stick. For predictable results, pair this module with another CT51264BA160B (4GB, DDR3-1600, CL11) instead of mixing different speeds or latencies.

What warranty comes with this module?

Warranty terms are not included in this listing. Check the product listing or Crucial's official site for current warranty coverage on part number CT51264BA160B.

Key Features

  • Increases system performance
  • Easy to install
  • Premium quality memory from a trusted brand
  • 100% Tested

Full Specifications

BrandCrucial Technology
Voltage1.5 volts
RAM Size4 GB
Model NameCT51264BA160B
Unit Count1 Count
Form FactorDIMM
Memory Speed1600 MHz
Model NumberCT51264BA160B
Number of Pins240
Mfr Part NumberCT51264BA160B
Item Part NumberCT51264BA160B
Memory GenerationDDR3
Compatible DevicesDesktop
Data Transfer Rate1600 MHz
Memory Form FactorUDIMM
Additional FeaturesLightweight
Computer Memory Size4 GB
RAM Memory TechnologyDDR3
Column Address Strobe Latency11
Global Trade Identification Number00649528751461, 05053785506897

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Crucial 4GB Single DDR3 1600 MT/s PC3-12800 CL11 Unbuffered UDIMM 240-Pin Desktop Memory Module CT51264BA160B is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Crucial 4GB Single DDR3 1600 MT/s PC3-12800 CL11 Unbuffered UDIMM 240-Pin Desktop Memory Module CT51264BA160B
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