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Manufacturer: Lexar Last updated: 2026-09-14
Lexar LD5U16G56C46ST 16GB Review
This single 16GB Lexar module runs DDR5-5600 CL46 with no RGB lighting
the 16GB counterpart to the same entry-tier plain UDIMM line's 32GB module in this catalog, just at half the capacity.
Performance
CL46 at 5600MT/s is 16.4ns true latency, the entry-tier bin for this plain UDIMM line, matching its 32GB sibling's timing exactly.
Comparison to Alternatives
The Lexar ARES Gen2 RGB or THOR OC 16GB modules in this catalog run meaningfully tighter timings; choose this part specifically when the lowest price matters more than latency or RGB.
Specifications
Identity
| Brand | Lexar |
|---|---|
| Part Number | LD5U16G56C46ST |
Memory
| DDR Generation | DDR5 |
|---|---|
| Capacity | 16 GB |
| Speed | 5600 MT/s |
| CAS Latency | 46 |
| Module Count | 1 |
Physical
| Form Factor | Desktop DIMM |
|---|---|
| RGB Lighting | No |
Module and platform
| RAM Segment | Desktop DDR5 |
|---|
Capacity
| Capacity Per Module | 16 GB |
|---|
Speed and timings
| True Latency | 16.4 ns |
|---|
Silicon
| Memory IC | Undisclosed |
|---|
Physical and lighting
| Colour | Black |
|---|
| Platform Sweet Spot | Both |
|---|---|
| Spec Score | 4.2 |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Budget 16GB builds where price matters more than latency
- Buyers who specifically don't want RGB lighting
Not for
- Performance-focused builds better served by an ARES Gen2 RGB or THOR OC module
- Anyone chasing the lowest possible latency at 16GB
FAQs
What are the key specifications of the Lexar LD5U16G56C46ST 16GB?
The Lexar LD5U16G56C46ST 16GB is a memory kit from Lexar. Key specs: DDR Generation DDR5, Capacity 16GB, Speed 5600MT/s, CAS Latency 46, Module Count 1.
Will the Lexar LD5U16G56C46ST 16GB work with my current setup?
The Lexar LD5U16G56C46ST 16GB 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 Lexar LD5U16G56C46ST 16GB best suited to?
It suits budget 16gb builds where price matters more than latency, buyers who specifically don't want rgb lighting.
What are the drawbacks of the Lexar LD5U16G56C46ST 16GB?
It is a poor fit for performance-focused builds better served by an ares gen2 rgb or thor oc module, anyone chasing the lowest possible latency at 16gb.