Crucial

Crucial 16GB DDR5-4800

Ranked #15 in RAM

28 LP on the category ladder what's LP?

A plain, dependable kit that Tom's Hardware found only slightly slower than faster DDR5, but it pairs DDR5's baseline 4800MT/s with just 16GB, its timings would not tighten, and Micron has stopped selling Crucial memory to consumers.

Backed by one cited source so far - limited coverage

See the source

Flagged as a product to avoid

3 of 6 research runs entered this as a product to avoid rather than a pick. A trap is a product buyers genuinely cross-shop but should not buy, ranked honestly alongside the real picks rather than dropped to the bottom. Why the boards include them

Check price

About this product

This page covers the Crucial CT2K8G48C40U5, a 16GB DDR5 desktop memory kit made of two 8GB sticks on a bare black circuit board with no heat spreader. It runs at DDR5's JEDEC baseline of 4800MT/s with 40-39-39-77 timings at 1.1V.

It needs a DDR5 motherboard and will not fit a DDR4 board. Because it is standard JEDEC memory, it reaches 4800MT/s without a memory profile. Crucial adds an Intel XMP 3.0 profile for the same speed, meant to restore full speed if a system downclocks the memory, and its DDR5-4800 modules do not carry an AMD EXPO profile.

Tom's Hardware reviewed this 16GB (2x8GB) kit at launch and later added results for the 32GB version, CT2K16G48C40U5. Micron announced in December 2025 that it is leaving the Crucial consumer business, with shipments to stores ending in February 2026, and said it will keep providing warranty service and support for Crucial products.

Specifications

Memory type: DDR5 1
Speed: 4800MT/s 1
Voltage: 1.1V 1
Pin count: 288-pin 1
Profile: XMP 3.0 2
Error correction: non-ECC 1
Warranty: Limited lifetime warranty 1

Checked by hand in September 2026 against 6 sources

Pros & cons

✓ Standard JEDEC memory that runs at its rated speed with no profile to enable
✓ Only 3.7% behind Kingston's Fury Beast DDR5-5200 C40 in Tom's Hardware's Intel tests
✓ Tom's Hardware reached DDR5-5200 by raising the voltage to 1.4V
✓ No heat spreader, and at 31.15mm tall its height is not a concern under a CPU cooler
✓ Limited lifetime warranty, which Micron says it will keep honoring

✗ Only 16GB, and Tom's Hardware suggests the 32GB version for work use
✗ 4800MT/s is the starting speed for mainstream DDR5
✗ Tom's Hardware could not tighten its 40-39-39-77 timings at any voltage
✗ Crucial's DDR5-4800 modules support Intel XMP 3.0 only, not AMD EXPO
✗ Micron ended Crucial consumer shipments in February 2026

The sources behind this ranking

We searched the web and YouTube for what has been published about this product, then read the articles, video transcripts and comments we found.

1 mixed source

B r/buildapc u/juancocinero · owner

It sounds like the lowest rated ddr5 ever but it is probably not the end of the world, especially if you use a underwhelming GPU like RX 6600. You can even just use this pair of ram with an X3D because it will be less affected by ram speed. Your selection of games does worry me quite a bit though.

Read thread

Frequently asked questions

It ranks #15 of 15 on our RAM tier list, in F tier. That placement rests on one cited source.

Yes. Tom's Hardware tested the 32GB version of this kit on a Ryzen 7 7700X system as well as on Intel. It runs at the JEDEC speed of 4800MT/s by default, so it needs no profile. Crucial's DDR5-4800 modules carry only an Intel XMP 3.0 profile, not AMD EXPO.

No. Crucial says its DDR5 desktop memory needs a DDR5-enabled CPU and motherboard and is not compatible with DDR4 motherboards. DDR5 modules also have the notch in a different place, so they will not go into a DDR4 slot.

Usually not. Crucial describes this as standard JEDEC memory, so it runs at 4800MT/s out of the box. Its XMP 3.0 profile is there to restore full speed if your system downclocks the memory, and Crucial notes that speed also depends on the CPU and the motherboard firmware.

A little, at your own risk. Tom's Hardware ran the kit at DDR5-5200 by raising the voltage from 1.1V to 1.4V, but could not tighten its timings at 4800MT/s. Crucial warns that overclocking beyond JEDEC specifications, rated speeds and timings voids the warranty.

Micron says it will provide continued warranty service and support for Crucial products. Crucial's desktop DDR5 carries a limited lifetime warranty, except in Germany and France, where it runs for ten years from the date of purchase.