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Manufacturer: OLOy Last updated: 2026-09-14
OLOy D5U1660405B-K88 16GB Review
The OLOy D5U1660405B-K88 is a 16GB DDR5-6000 CL40 module; the same speed/CL/color-code pattern matches OLOy's Blade RGB 32GB (2x16GB) CL40 kit (ND5U1660405BRKDA, confirmed on Newegg), so this is very likely the single-module version of that line.
6000MT/s hits the AM5 sweet spot, but CL40 is a looser timing than OLOy's own CL36 module at the same speed, so it trades a bit of latency for (typically) a lower price.
Performance
6000MT/s CL40 gives a 13.3ns true latency, noticeably behind OLOy's own D5U1660366B-K88 (same 6000MT/s but CL36, 12.0ns) at the identical speed and capacity.
Comparison to Alternatives
If latency matters more than price, OLOy's own CL36 module at the same 6000MT/s and 16GB capacity is the better pick; this CL40 version is the value option at the same headline speed.
Specifications
Identity
| Brand | OLOy |
|---|---|
| Part Number | D5U1660405B-K88 |
Memory
| DDR Generation | DDR5 |
|---|---|
| Capacity | 16 GB |
| Speed | 6000 MT/s |
| CAS Latency | 40 |
| Module Count | 1 |
Physical
| Form Factor | Desktop DIMM |
|---|
Module and platform
| RAM Segment | Desktop DDR5 |
|---|
Capacity
| Capacity Per Module | 16 GB |
|---|
Speed and timings
| True Latency | 13.3 ns |
|---|
| Platform Sweet Spot | Both |
|---|---|
| Spec Score | 3.0 |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Budget-conscious DDR5-6000 single-slot upgrades
- AM5 or Intel builds prioritizing price over tight timings
Not for
- Latency-sensitive workloads (see the CL36 module instead)
- New builds wanting dual-channel out of the box
FAQs
What are the key specifications of the OLOy D5U1660405B-K88 16GB?
The OLOy D5U1660405B-K88 16GB is a memory kit from OLOy. Key specs: DDR Generation DDR5, Capacity 16GB, Speed 6000MT/s, CAS Latency 40, Module Count 1.
Will the OLOy D5U1660405B-K88 16GB work with my current setup?
The OLOy D5U1660405B-K88 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 OLOy D5U1660405B-K88 16GB best suited to?
It suits budget-conscious ddr5-6000 single-slot upgrades, am5 or intel builds prioritizing price over tight timings.
What are the drawbacks of the OLOy D5U1660405B-K88 16GB?
It is a poor fit for latency-sensitive workloads (see the cl36 module instead), new builds wanting dual-channel out of the box.