This means if you want to upgrade the total RAM size without replacing the existing RAM, then you must purchase another RAM with the same CL ratio and clock speed. If that CAS#Latency (CL) is 9.0 clocks then your system is currently running on RAM with CL9 Ratio.
Otherwise, such RAM modules will not be able to work at their specified speed.įor example, we have two RAM modules with following specification. Sametime, its recommended to do not mix RAM with different clock speeds or different CL ratios. Lower latency assures the processing of data in minimal time. Remember, RAM with a lower CAS latency ratio is always better than a higher one. So, merely judging RAM on the basis of CAS latency (CL) ratio is not right. Such as clock speed, latency ratio, rank etc. The performance of the RAM module depends on multiple factors. Indirectly, low latency RAM will be degraded to match the higher latency ratio of another RAM. The motherboard will set CL ratio of 16 for both RAMs. However, the motherboard will match the CAS latency ratio by setting a higher CAS ratio among the installed RAM modules.įor example, you have installer two RAM modules with CL ratio 15 & 16. Lower CAS Latency Ratio is always better than higher CAS Latency Ratio.Īssuming you are choosing multiple RAM with same clock speed (i.e., 3200 MHz x 2 RAM) Can you mix CAS latency RAM?Īlthough NOT recommended technically you can mix different CAS latency RAM modules. Right now, a few doubts might come to mind. Whereas for synchronous DRAM, the CL ratio is specified in clock cycles.
This delay between requesting & receiving the dataset is nothing but the CAS latency or CL ratio of that RAM.ĬL ratio specified in nanoseconds for asynchronous DRAM.RAM processes’ the request and produces the output to memory controller.The memory controller forwards this request to RAM.Memory controller works as the middleman between processor and RAM.If the required dataset is not available with these caches then the processor orders the memory controller to fetch that dataset from RAM.It processes the datasets supplied by cache memory, known as L1, L2 & 元 cache.As you may be aware, CPU processor is the brain of computer.In above illustration the CAS Latency Ratio is 16. Technical illustration for better understanding of CL Ratio Now, let’s apply above illustration to real life scenario. So, these 2 minutes is nothing but the CAS latency ratio of our illustration. In above illustration the time gap is 2 minutes (i.e., time taken to process the request). After searching for 2 minutes, the salesman concluded that the box ‘C’ contains 3 mangoes. In above illustration, Manager asking the salesman for a box which contains 3 mangoes. Non-technical illustration for better understanding of CL Ratio I know it’s still beyond understanding, especially non-technical guys.īefore jumping into this technical arena, let me tell a non-technical story. Now, it’s obvious to have doubt that who is requesting the data for RAM. That’s why Doubt Solver recommends using RAM with the same CL ratio & same clock speed for the optimum performance. However, not only the CAS latency ratio but the clock speed, rank, DDR generation, ability to overclock and other factors are crucial while predicting performance. Thus, a lower CAS latency ratio denotes better performance. Simply, it’s delay to produce a data by column of RAM.CAS latency (CL) can be defined as the time gap between the read command initiated by memory controller and the moment when data is made available by the RAM.🤩 Let’s look at CAS latency ratio step by step.
#Latency calculator mac os full#
Since, the full form does not reveal any understandable meaning.ĭon’t worry, why are we here? We are doubt solvers. I bet you may still be skeptical about CAS latency ratio. If you need better information about CAS latency ratio, then navigate towards methods to find out CAS latency ratio.īefore diving into the definition, let us see what the full form of the CAS. RAM with different CL numbers can hinder achieving optimal performance. It plays a significant role while upgrading or replacing current RAM modules. Are you one of those who searched a lot about CAS Latency (CL) ratio? Still unsure about the exact meaning & where to locate it? Don’t worry, we will try our best to explain it.ĬL Ratio is crucial when purchasing add-on RAM.
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