Cas Latency Meaning

Updated September 2, 2026

Overview

Product sourcing insights & recommendations

20 来源

CAS latency (CL) is the number of clock cycles between a command and data availability, and its significance has shifted dramatically with the rise of DDR5 in 2026. Corsair Crucial

Technical Overview

While DDR5 modules have higher nominal CAS latency (e.g., CL36) than DDR4 (e.g., CL16), their much higher clock speeds result in a similar True Latency of roughly 10ns. Logicalincrements Newegg

Market Trends (2026)

* AI Demand Crisis: Massive demand for AI training has caused a 124% price spike in low-latency DDR5 kits (CL30) since late 2025. Alibaba

* Dominance of DDR5: Search interest for DDR5 peaked in early 2026, marking it as the new mainstream standard for all latest platforms.

* Sweet Spot: The current performance-to-value ideal is DDR5-6000 CL36, which balances stability and cost. Logicalincrements

The report below provides a deep dive into technical definitions, the True Latency formula, and a comprehensive buying guide for 2026 memory products.

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Sources & References

20 sources cited · Verified industry data & reports

What is CAS Latency? CL and RAM Timings Explained

Kingston Technology

CAS latency (Column Address Strobe latency) refers to the delay between when your system's memory controller requests data from the RAM and when that data ...

How does CAS latency affect performance? : r/buildmeapc

Reddit · r/buildmeapc

So I can her either a 3600hz ram kit with 16 latency for 78 dollars while I can get a 3600 kit with a cas latency of 18 for only 53 dollar can someone ...

What is CAS latency? DDR5 latencies explained | CORSAIR

corsair.com

CAS latency tells you the total number of cycles it takes for the RAM to send data, but you should consider the duration of each cycle to get a better idea

The difference between RAM speed and CAS latency

Crucial

At a basic level, latency refers to the time delay between when a command is entered and when the data is available. Latency is the gap between these two ...

CL28 vs CL36 for Gaming!

YouTube · JayzTwoCents

We're going to actually compare three identical Ram kits with different timings to see how it actually affects performance.

What is CAS latency: what you must know

Latitude.sh

CAS Latency measures how fast RAM responds to a request for data, it is also known as Column Address. Lower CAS Latency means a faster response ...