Crucial CT32G48C40U5.M16A1 32GB
- Capacity:
- 32GB
- Speed:
- 4800MT/s
- CAS Latency:
- 40
Consumercarts is reader-supported. Learn more
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Manufacturer: Crucial Last updated: 2026-09-14
Crucial CT32G48C40U5.M16A1 32GB Review
Searching for the Crucial CT32G48C40U5.M16A1 32GB DDR5-4800? It's Crucial's plain desktop DIMM, a single 32GB stick running at DDR5's JEDEC entry speed with no XMP profile.
We'd point this at a single-stick 32GB upgrade for a budget desktop build, it's not fast and it's single-channel, but it's a cheap way to hit 32GB before you decide whether a matched kit is worth the extra cost.
Performance
4800MT/s CL40 is DDR5's un-tuned baseline, true latency works out to about 16.7ns, noticeably behind the 10-13ns range of a proper XMP/EXPO kit at 5600-6000MT/s. Running as a single module also means no dual-channel bandwidth, so this is a capacity-first purchase rather than a performance one.
Comparison to Alternatives
Crucial's own Pro line covers the same ground with certification: the Crucial Pro CP2K16G48C40U5 (32GB as a 2x16GB kit at the identical 4800MT/s CL40) gets you the same total capacity split across two channels instead of one, which is the better buy if your board has two open slots. Keep this single CT32G48C40U5.M16A1 module for boards with only one DIMM slot free or for topping up an existing single stick.
Specifications
Identity
| Brand | Crucial |
|---|---|
| Part Number | CT32G48C40U5.M16A1 |
| Series | Crucial RAM |
Memory
| DDR Generation | DDR5 |
|---|---|
| Capacity | 32 GB |
| Speed | 4800 MT/s |
| CAS Latency | 40 |
| Module Count | 1 |
| Voltage | 1.1 V |
Physical
| Form Factor | Desktop DIMM |
|---|---|
| RGB Lighting | No |
Module and platform
| RAM Segment | Desktop DDR5 |
|---|
Capacity
| Capacity Per Module | 32 GB |
|---|
Speed and timings
| True Latency | 16.7 ns |
|---|
Silicon
| Memory IC | Micron |
|---|---|
| ECC | No |
Physical and lighting
| Colour | Green PCB |
|---|
Commercial
| Warranty | Limited Lifetime |
|---|
| Model Number | CT32G48C40U5.M16A1 |
|---|---|
| OC Profile | JEDEC Standard (No XMP) |
| Spec Score | 3.2 |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Single-DIMM-slot desktop upgrades to 32GB
- Budget builds where a matched dual-channel kit isn't in the budget yet
- Topping up an existing single-module system
Not for
- Builds that can use two slots for dual-channel bandwidth
- Gaming or content-creation rigs wanting XMP-tuned speeds
FAQs
What are the key specifications of the Crucial CT32G48C40U5.M16A1 32GB?
The Crucial CT32G48C40U5.M16A1 32GB is a memory kit from Crucial. Key specs: DDR Generation DDR5, Capacity 32GB, Speed 4800MT/s, CAS Latency 40, Module Count 1.
Will the Crucial CT32G48C40U5.M16A1 32GB work with my current setup?
The Crucial CT32G48C40U5.M16A1 32GB lists DDR Generation is DDR5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits. Our upgrade checker at /upgrade can confirm compatibility for common combinations.
Who is the Crucial CT32G48C40U5.M16A1 32GB best suited to?
It suits single-dimm-slot desktop upgrades to 32gb, budget builds where a matched dual-channel kit isn't in the budget yet, topping up an existing single-module system.
What are the drawbacks of the Crucial CT32G48C40U5.M16A1 32GB?
It is a poor fit for builds that can use two slots for dual-channel bandwidth, gaming or content-creation rigs wanting xmp-tuned speeds.