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Does CAS latency matter?

Yes, they do. However, CAS Latency is still the most commonly used metric to compare memory latency because it more directly affects (immediately) how fast your RAM module responds to a request.
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Is CAS latency important?

CAS latency is an accurate indicator of real world latency performance. As speeds increase, CAS latencies also increase, effectively nullifying some of the speed gain.
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Is there a big difference between 16 and 18 CAS latency?

In terms of CAS latency and speed, CL16 is a little better than CL18. But from the prices, the CL16 is more expensive than the CL18. So, if your budget is not too much, you can choose CL18 for your computer.
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Is it better to have lower CAS latency?

At the same frequency, the effect of different CLs on the latency time. When the memory frequency is the same, the lower the CL, the shorter the latency time will be, and the less time the computer has to wait to read the memory data, which means the better the performance.
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Is CAS latency 14 better than 16?

Overall, the lower CAS latency the better the performance. It's not the only metric you should be looking at as all other specs of RAM dictate the overall performance. Edit: the difference isn't massive. In games, a few frames of a difference at best.
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RANT: THE CAS LATENCY TIMING DOESN'T MATTER AS MUCH AS YOU THINK IT DOES

Is CL18 faster than CL14?

3600 cl18 will give you higher frame rates and a lower effective latency but the 3200 cl 14 will give you better frame times. If you use a 3200MHz RAM the memory clock (also called MCLK) and FCLK has to be lowered to 1600MHz directly affecting the speed of data exchange inside the CPU.
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What is the CAS latency for 3600MHz?

The 3600MHz unit, for instance, has a CAS latency of 18 whereas the 3200MHz unit is a C16 kit.
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What is the lowest CAS latency in RAM?

RAM speed vs.

DDR3 RAM usually has a CAS latency of 9 or 10, while DDR4 will have a CAS latency of at least 15. However, because of its faster clock speeds, the newer standard has better performance overall.
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Is CAS latency higher or lower DDR5?

Most DDR5 modules have CL40 CAS latency, which negates DDR5's high clock speeds. It's faster at completing tasks, but it takes longer for the RAM to register it needs to perform a task. So, that DDR4-3200 CL20 RAM will have snappier performance than a DDR5-4800 CL40 module.
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Is 36 CAS latency bad?

The higher CAS numbers keep the real time latency similar to the real time latency for DDR3/4, but the RAM is much faster in all other ways. They will not go down to anything close to 10-20 over time. 36 is pretty good already.
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Is CL18 3600 faster than CL16 3200?

The difference will be extremely minimal.

You can see that the effective latency is the same. 3600 CL18 is the same latency as 3200 CL16. These are MASSIVE numbers, and it takes some incredible demands to reach a maximum throughput that will be bottlenecked by DDR4.
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Which is faster 3200MHz CL16 or 3600MHz CL18?

The latency of 3200MHz CL16 and 3600MHz CL18 is the same (both have a CAS Latency of 10ns) but the higher frequency of the 3600MHz RAM would give it the advantage.
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What is the difference between 3200 MHz CL16 and CL18?

Is there any major difference between CL16 and CL18 Ram for Ryzen 5000? CL16 at 3200 is exactly the same latency as CL18 at 3600, because 16/32=0.5 and 18/36=0.5*. So the 3600 memory has the same CL latency and faster data rate, making it strictly faster.
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How do I know what CAS latency is better?

Step 1: Identify the highest memory speed supported by both your processor and motherboard (including overclocking profiles). Step 2: Select the lowest latency memory that fits within your budget at that speed, remembering that a superior (i.e. lower) latency means superior system performance.
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Is 32GB RAM overkill?

32GB of RAM is considered high and is generally overkill for most users. For most everyday use and basic tasks such as web browsing, email, and basic office work, 8GB of RAM is more than enough. Even for gaming or video editing, 16GB is typically sufficient.
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Why is my CAS latency so high?

If your CAS latency is higher than what is advertised (e.g. latency is advertised as 3000c15-18-18 but runs at 3000c16-18-18), this is because of a BIOS setting that helps with memory stability on Ryzen systems. You can disable this setting so that the memory runs at its rated speed.
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Is DDR4 latency worse than DDR5?

DDR5-4800 CL40 memory adds only ~3% more to the system latency than DDR4-3200 CL22, which is apparent in synthetic benchmarking but virtually unnoticeable in a majority of real-world use cases and games.
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Is it OK to use RAM with different CAS latency?

It it is always advisable to use identical memory chips (Same Capacity,Same Speed,Same Timings) when installing in pairs (Dual Channel Mode which theoretic... Is it safe if I upgrade my laptop's RAM with a different CAS latency? Safe, yes.
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Is CAS latency 15 good?

A stick of DDR4-3600 RAM with a CAS of 15 has a true latency of 8.33 nanoseconds, while a same-size/same-speed stick with a CAS of 19 has a latency of 10.56 nanoseconds. In this case, the DDR4-3600 RAM with a CAS of 15 is objectively better than the DDR4-3600 RAM with a CAS of 19.
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Is 32 CAS latency good?

It's important to note that while a CAS latency of 32 is very impressive for default operation, it's just one timing. The Trcd, Trp and Tras also play a part, and these are set at 39-39-102 though we're sure these can be lowered with some tweaking or adventurous voltage application.
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What is the CAS latency for DDR4-3200?

Calculating RAM Latency or CAS Latency

However, because advertised CAS Latency is measured in clock cycles, we need to account for memory speed to get a real-world CAS latency in nanoseconds. So, say we have a DDR4-3200 CL16 memory kit. You get a latency in nanoseconds with (16*2000)/3200 = 10ns.
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What is the best CAS latency for gaming?

When it comes to CAS latency, lower is better. Look out for CL16/CL18 or better, as these kits offer the responsiveness we want for gaming.
...
Best DDR4 RAM for gaming
  1. TEAM XTREEM ARGB 16GB DDR4-3600 C14. ...
  2. G.Skill Ripjaws V 16GB DDR4-3600. ...
  3. Corsair Dominator Platinum RGB 32GB DDR4-3200.
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What is the lowest CAS latency DDR4?

Skill announces DDR4 RAM with lower latency. Specifically, the company has announced the RAM memories of the Trident Z RGB, Trident Z Royal and Trident Z Neo families. These three families of drives arrive with CL14 latency, the lowest latency on the market for 3200MHz.
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Why is DDR5 CAS latency so high?

DDR5 inherently has more bandwidth by the way it was designed. As for why the timings are so much looser on DDR5, that's the way it goes for every new DDR release.
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Does RAM timing matter?

Besides the speed of your RAM, you also need to pay attention to the RAM timings which can be explained as the delay that occurs between tasks that your RAM is assigned to. Essentially the lower your RAM timings are, the faster and more efficient the operation will be.
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