4 V. CAS Latency: 36: Un design éprouvé, une finition exemplaire, une garantie à Apr 10, 2023 · The Importance of CAS Latency (CL) What is CAS Latency? Let's zoom in on the first number in that RAM timing series, the CAS Latency (CL). Ensures consistent high-frequency performance with aggressive timing options. The CL18-rated RAMs are still pretty good for general usage. As a result, the other components on the PC remain safe from overheating. Which should I go with? May 4, 2022 · G. Dec 11, 2023 · I'm contemplating buying some DDR5 ram sticks (32GB (2x16) at 6000Mhz, but I'm a bit confused with the CAS specifications. also called CAS latency. Low clearance ensures wide compatibility with nearly any DDR5 build. One is 18 and the other 19. CAS latency, or Column Access Strobe latency, is the time between when a memory controller tells the RAM to access a particular memory column on a RAM module and when the data from the given array location is available on the module’s output pins. Jun 7, 2015 · Latency is also the inverse of frequency. CAS stands for Column Address Strobe, a key aspect of RAM functionality. Both achive the same cycle timing of 10ns. IGPU uses system memory so faster is better. 00444444 I got this formula from another website but I'm not sure about how accurate it is. With 16-19-19-39 vs 16-18-18-38, the differences are negligible. See our PC Memory 101 feature and How to Shop for RAM story for more Oct 16, 2022 · Cas seems quite meh at lowering latency especially when you start needing exponentially more volt to lower it, on ddr4 atleast at 3200, seems like you only get a <1ns drop in latency per drop in cas, im not really sure about the absolute latency though, maybe cas does matter more at higher freq but atleast in lower freq doesnt seem to matter Jun 30, 2022 · At a given first word latency, say 10ns, would higher speed memory or lower cas latency memory perform better? Between several kits of ram that are equivalent except one is 3200MT/S CL16, another is 3600MT/S CL18, and a third is 4000MT/S CL20, which would perform best? Nov 21, 2023 · Understanding CAS latency is important because it directly impacts the overall speed and performance of your computer. The faster something cycles, the less time a single cycle takes. Jun 10, 2020 · - Time Stamps -0:00 - Battlefield V1:41 - Farcry New Dawn2:45 - PUBG3:43 - Fortnite4:51 - Warzone6:13 - Rainbow Six SiegeAll games were tested on the lowest Jun 10, 2024 · CAS Latency: 30: Deuxième kit de barrettes de DDR5 certifié EXPO passé entre nos mains et deuxième réussite. Higher clock speeds Example: if the speed rating of a standard module and a gaming module is the same (i. . The lower the CL rating, the faster the RAM can respond to requests. Measured in nanoseconds (ns), it indicates the time delay between when a command is issued to the memory and when the data is retrieved or Nov 20, 2022 · 30: 200. There is a $10 difference between the two and I am wondering if that is worth the price difference. CL16 RAM has a CAS latency of 16 cycles, while CL17 RAM has a CAS latency of 17 cycles. CAS Latency (CL) is often the most discussed among these – it’s the delay between the memory controller asking for data and the RAM being able to provide it. 25V: 1. Primary, secondary, and tertiary timings can impact benchmark performance on Intel and Ryzen CPUs, and we talk about th GuRu Time By TT วันนี้นำเสนอเรื่องราวเกี่ยวแรม RAM DDR5 ในหัวข้อเรื่องCL หรือ Cas Latency 2 days ago · Compact Form-Factor. CAS Latency (tCL/CL/tCAS) CAS Latency – Image: MakeTechEasier Mar 1, 2024 · DDR5 RAM CL32 modules have a CAS latency of 32 clock cycles, while DDR5 RAM CL36 modules have a CAS latency of 36 clock cycles. Skill Trident Z5 RGB DIMM kit 32GB, rated DDR5-6000 and offering CL36-36-36-76 with on-die ECC. RAS to CAS Delay: RAS (Row Address Strobe) to CAS Delay is the time delay between the memory controller selecting a row and the column address being ready to be accessed. This 6600MHz CL34 kit is approximately equal in latency to a DDR3 2400MHz CL12 kit, which would have been a reasonably high-end DDR3 kit towards the end of its life. The Newegg listing's specs said it had a CL of 20, but at this point IDK which one I should trust. 35V Desktop Comp Sep 20, 2021 · Clockspeed matters more than timings for performance, especially subtimings. May 15, 2021 · as for 15-15-15-36 -> these are the timings/latency for writing/reading of the DRAM. . List of Memory with 36 CAS Latency: Crucial Pro Overclocking 32GB (2x16GB) DDR5 6000MHz White, Crucial Pro Overclocking Edition 16 GB DDR5 6000MHz, Crucial Pro Overclocking 32GB (2x16GB) DDR5 6000MHz, CORSAIR Dominator Titanium RGB 48GB (2x24GB) DDR5 7200MHz, CORSAIR Dominator Titanium RGB 48GB (2x24GB) DDR5 7000MHz Apr 23, 2022 · CL is another way of describing CAS latency. Skill, has just announced the first DDR5 memory sticks with a sub-30 CAS latency. As far as the CAS Latency timing is concerned, the two are identical, both have 10 nanoseconds of latency. While its impact depends on your use case and system configuration, optimizing CL avoids "leaving performance on the table" for memory-intensive applications. Large packets of data will speed up ni Sep 6, 2023 · “CL” stands for “CAS Latency. Skill Trident Z5 DDR5-6400 CL32 32GB (2x16GB) While DDR5 RAM is newer with better storage density and power efficiency than DDR4, it tends to have higher CAS latency. Sep 18, 2023 · So for DDR5-5600 CL 28, the actual CAS Latency (CL) will be 5600 / 2 = 2800 MHz / 28 = 100 MHz or 10 nanoseconds. lotsa people think that the higher cas is offsetting the faster clock, so theres no reason to buy fast sticks at all. If its between 30-38-38-96 and 36-36-36-76, I prefer the higher but tighter timings. 005 3600 mhz cl16 has an effectivr access delay of 0. SKILL Flare X5 Series (AMD Expo) DDR5 RAM 32GB (2x16GB) 6000MT/s CL36-36-36-96 1. 36 is pretty good already. This holds true even if your memory We would like to show you a description here but the site won’t allow us. 4V, we couldn't lower the CAS Latency (CL) value any lower than 36 clocks. Oddly enough, the tRCD, tRP, and tRAS timings were stable at 33-33-73. 33 ns for the 6000 MHz CL40 versus 10. Is Mixing RAM with Different Latency, a Bad Idea? Yes. However, because of its faster clock speeds, the newer standard has better performance overall. The RAM with a CAS latency of 15 is faster than the RAM with a CAS latency of 16. Jun 30, 2022 · CL means “CAS Latency”. It marks the first part of a sequence of memory timings. Oct 18, 2019 · Hello! I read that the formula for calculating the memory latency in nanoseconds is this: (CAS latency / RAM clock speed) * 2000 = latency in nanoseconds 3200MHz cl16 -> (16/3200)*2000 = 10 nanoseconds 3600MHz cl18 -> (18/3600)*2000 = 10 nanoseconds Does this mean that if the Motherboard The ratio is what determines the latency, so 6400c32 is very similar to 6000c30 in latency. CAS Latency. 30 ns 10. 36 ns Generace Typ Oct 4, 2016 · I have been looking at RAM for my new build and am wondering how much CAS will affect gaming and everyday performance. CAS latency is measured in clock cycles, and it is typically expressed as a number followed by the letter “CL”. Each 64-bit rank of DDR5 memory (a rank being a subset of memory chips on a memory module) is divided into two 32-bit ranks, with the latency benefits described in Nov 9, 2022 · With CAS Latency, you’re typically looking for a lower number—thus a lower latency—rather than a high number. SKILL Trident Z5 Series (Intel XMP 3. Color is least important part and would be foolish to sacrifice performance for looks unless you frame it and nail to a wall. CL28 5600 = 10ns CL30 6000 = 10ns (CAS 28 × 2000 is 56000) (56000 ÷ 5600mhz) = 10 (CAS 30 x 2000 is 60000) May 11, 2024 · CL stands for “CAS Latency,” and it refers to the number of clock cycles it takes for the RAM to respond to a read or write request. SKILL Trident Z5 Neo Series (AMD Expo) DDR5 RAM 32GB (2x16GB) 6000MT/s CL30-38-38-96 1. Lower CAS latency means faster performance, regardless of the memory speed (assuming there isn’t a gap of more than 1,000Hz between the CL16 and We would like to show you a description here but the site won’t allow us. I know the first number is the Latency, but not sure about the others. Skuill shipped out their best DDR5 memory, the G. SKILL kit in tests. May 14, 2020 · You get higher access speed with no loss in latency. Feb 13, 2022 · Despite increasing the DRAM voltage to 1. Độ trễ này xảy ra khi CPU giao tiếp với RAM và được tính bằng khoảng thời gian giữa một yêu cầu thông tin đến cột bộ nhớ Oct 14, 2022 · Flipping the XMP 3. To comprehend the significance of DDR5 RAM CL30 vs CL40, it is essential to grasp the concept of CAS latency (CL), a crucial parameter that measures the time it takes for a memory module to retrieve data from a specific location. We would like to show you a description here but the site won’t allow us. How much do the timings on those three numbers affect the overall performance vs the CAS latency which seems to be what people care about most? Is this RAM basically going to have the performance of C18 RAM, and they just managed to get the CAS to 16 for marketing purposes? Or will this perform more similar to RAM 16-16-16-36 timings? Nov 22, 2021 · This is because memory speed and CAS latency are two different things. Therefore, the order of the number in the string 16-18-18-38 tells us which primary timing has what value at a glance. Nov 24, 2022 · With DDR5, frequency is king, primary timings are almost irrelevant. If a RAM kit has a CAS latency of 8, it will take 8 RAM clock cycles to perform the task. 4. Mar 16, 2024 · With tight timings and a CAS latency of just 30-40-40-96. Arguably the best-looking DDR5 performance RAM; Programmable with custom EXPO profiles on Windows (iCUE) Not the fastest in terms of CAS latency; Expand. 35V Using the formula Cas Latency/Clock speed I get: 3200/14 = 0. Rated Latency: 34-45-45-115 We would like to show you a description here but the site won’t allow us. In essence, lower CL means faster memory access. Since both are CL16, the higher clock speed obviously wins, but even 3600MHz CL18 would have the same total latency as 3200MHz CL16, while still having more bandwidth. 7: 5600: 28: 200. What I've gathered (I think) is the lower the numbers the 'better' the ram? For example, cas latency 36-44-44-96 and for another example, cas latency 36-36-36-76. 35V The other set is: DDR4 3600 (PC4 28800) Timing 16-16-16-36 Cas Latency 16 Voltage 1. The lower the CL number, the faster the memory module is. Thus, it can demonstrate the speed at which your RAM can process requests from the CPU and restore data. The CAS latency number is a count of clocks, not a count of absolute access time. 4: 5600: 30: 186. Is it worth spending more? thanks I keep reading about the 7000X 6000 MHz RAM memory sweet spot. 99. 4: CAS latency has an effect only when you are doing non-sequential reads. 0 switch will load the only profile on board, for DDR5-6000 with 36-36-36-76 timings and 1. I'd go for the Crucial kit since it's cheaper. 0: 5600: 36: 155. The same online shops sells G. Sometimes, CAS latency is called CL. 004375 3600/16 = 0. Performance is Mar 11, 2024 · Understanding DDR5 RAM CL. See full list on blog. Skill Ripjaws V 3200 with the timings of 16-18-18-38 at 130 euro. Skill Flare X5 2x16GB DDR5 6000MHZ CL36-36-36-96 AMD EXPO \ Willk Elektronik 2x16GB 2666MHZ CL17: Video Card(s) Asus GeForce RTX™ 4070 Dual OC GPU: 2325-2355 MEM: 1462| Intel® Iris® Xe Graphics: Storage: Gigabyte M30 1TB|Sabrent Rocket 2TB| HDD: 10TB|1TB \ WD RED SN700 1TB: Display(s) Dec 24, 2021 · In that mindset G. 0) DDR5 RAM 32GB (2x16GB) 6000MT/s CL36-36-36-96 1. com Nov 2, 2023 · CAS latency remains one of the most crucial specifications to evaluate when selecting RAM. Both are same price and speed. CAS latence (zkratka CL, Význam jednotlivých čísel u vícečíselné CAS latence je: tCL (CAS Latency, 10. CAS Latency (CL) là viết tắt của Column Address Strobe Latency, tức là độ trễ trong chu kỳ đồng hồ giữa lệnh READ và dữ liệu thời điểm có sẵn. G. 6: 5600: 38: 147. Aug 30, 2023 · Again, the RAMs with CAS latency 16 don’t overheat like CAS latency 15 RAMs. Apr 18, 2024 · CAS latency: 36. Column address strobe latency, also called CAS latency or CL, 10. CAS Latency: Evaluate the CAS Latency value of the RAM modules and choose one with a lower latency if your budget allows. Voor zowel de 16GB- als May 4, 2022 · Memory manufacturer, G. For example, a 3200 MHz CL16 kit has a CAS latency of 10 nanoseconds. As we’ve covered here, mixing memory, in general, isn’t ideal. Today's Best Deals. and are just using these two values. Jun 5, 2017 · Hi I found some G. The 6000 Cl30 kit is gonna be the faster of the two. Absolute latency of these two ram configs are equal. You want to have a lower CAS latency to improve the performance. E: Both share the same CAS latency/ CL of 16, so no difference there. DDR, DDR2, and DDR3 RAM memories are classified according to the maximum speed at which they can work, as well as their timings. Skill Ripjaws V 3200 with timings of 16-16-16-36 at 140 euro. Thanks! Ram: https://www May 7, 2021 · And because cycle time decreases in proportion to frequency, a higher frequency that uses the same number of CAS Latency cycles also corresponds to quicker response time. Jun 27, 2013 · Hello, Im looking to upgrade the ram in my computer, and was wondering if I should go with the Corsair Vengeance DDR3-1600 2x8 16GB Ram with 9, 10, or 11 CAS Dec 22, 2020 · This set has the biggest impact on the actual latency of the RAM kit and is a point of focus while overclocking too. 0: 5200: 36: 144. 35V Desktop Computer Memory UDIMM - Matte Black (F5-6000J3636F16GX2-FX5) $106 G. 36 ns Generation Type Data rate Transfer time Command rate Cycle time yeah, what i meant to imply was that you shouldnt waste money on buying a lower cas set with the same speed, since the true latencies are different by only fractions of a nanosecond. Feb 6, 2023 · G. In this case, the 6400c32 will have better performance in extremely intensive ray tracing / ultra graphics scenarios, but they would behave similarly in any competitive gaming. 35V DRAM voltage. The stunning heat spreader keeps the temperature of CL 16 RAMs as low as possible. e. Column Access Strobe Latency is referred to as CAS Latency. I am thinking probably not. DDR3-2400 CAS 12, for example, has 50 percent more bandwidth than DDR3-1600 CAS 8, but both of them take the same amount of time to initiate a transfer. Yo u just want to go for the highest clocked kit you can afford, ignoring timings for the most part. Apr 13, 2023 · Does going from a CAS latency of 40 to 30 make any noticeable difference on gaming performance? My RAM in my system is DDR5 6000 CL40, would there be any noticeable difference going with DDR5 6000 CL 30? Jul 18, 2024 · Primary RAM timings are a set of numbers, like 16-18-18-36, reflecting four key latency measurements. Hand-Sorted, Tightly-Screened Memory Chips. DIMMs: 2x 16GB. Skill Flare X5 32GB (16GB x 2) DDR5 6000 CL36 F5-6000J3636F16GX2-FX5 Nov 18, 2022 · CAS Latency: 36: 30: 28: Timing: 36-36-36-89: 30-36-36-89: 28-34-34-89: Voltage: 1. Random Access Memory Timings are numbers such as 3-4-4-8 It's a very popular misconception that "true" latency is somehow different from CAS latency. DDR5 RAM CL, also known as CAS latency, represents the number of clock cycles it takes for the memory to respond to a read or write request. This is not true, it is just a different description of the same quantity -- CAS latency. DDR4-2666) but the CAS latencies are different (i. May 2, 2021 · And that gets to the question of how PC-100 and DDR4-3200 can have the same latency: A 100 MHz clock cycle takes 10ns (ten nanoseconds), so that PC-100 CAS 1 took a minimum of 10ns to access data. The main timing you need to pay attention to is the first one, known as the CAS Latency or CL. One is 16-20-20-38 for $139. But does that mean that a 6000 MHz CL40 will outperform a 5200 MHz CL28 even though the latter actually has a lower first word latency? 13. logicalincrements. ” Column Address Strobe (CAS) Latency is also known as CAS Latency. 0044 Unless you are doing intensive computational work with large pools of data, you won't notice a difference. Simply put, the CAS Latency is how long it takes for the RAM unit to access its memory column and make that information available to the RAM output and, thus, the computer Mar 2, 2024 · What is CAS Latency? CAS latency is a measure of how long it takes for the RAM to respond to a request for data. Check Amazon CL/CAS Latency - Column Access Strobe Latency is the delay between the memory controller requesting data from Mar 21, 2024 · Latency 36-36-36-76 Pros. CL19), then the lower CAS latency will provide better performance; The difference between the perception of latency and the truth of latency comes down to how latency is defined and measured. Sowohl höhere Geschwindigkeiten als auch geringere Latenzen führen zu einer besseren Systemleistung. May 4, 2022 · De meeste DDR5-reepjes hebben een cas-latency van 30 of hoger. For DDR5-6000 CL30, the CL will be 6000 / 2 = 3000 MHz / 30 = 100 MHz or 10 nanoseconds. The 'best' speed for a 3600 is the same as for any Ryzen 3000 CPU: that's 3600Mtps clock speed with synchronized infinity fabric and CAS 18. Feb 7, 2022 · You can also think of CAS latency as the number of RAM clock cycles needed for RAM to output data that the CPU calls. 35V Desktop Computer Memory UDIMM - Matte Black (F5-6000J3636F16GA2-TZ5RK) $113 G. Heck, even a 6000 Cl40 kit would be faster than the 5600 CL28 kit since CAS Latency means almost nothing on DDR5. What Is the Best CL16 Timing? The best CL16 timing is CL16-18-18. This gets broken down according to CL or CAS latency, Trcd, Trp, and Tras. So CL 16 RAM will be a faster unit than CL 18 RAM. Only the Halbleiteringenieure wissen, dass CAS-Latenzen ein ungenauer Leistungsindikator sind. 2 x 8GB 3200 MHz would be ideal. CL16 vs. However, the CL16 rating also comes with an increase in costs. Now that we know what CL ratings mean, let’s compare DDR5 RAM CL30 and CL36 in terms of Dec 21, 2023 · For example, RAM with a CAS Latency of CL14 will perform better than RAM with a CAS Latency of CL16. CL30 6000) If you dont include subtimings. For users who prioritize absolute performance and are willing to pay a premium, DDR5 RAM CL32 modules offer the lowest CAS latency and the best overclocking potential. NZXT-CAM also says that the timing is 15-15-15-36, but I don't know what It means. the true latency numbers prove this is wrong. The lower the CAS latency, the faster the RAM. Those [edit: I was referencing the -19-19-39 vs -18-18-38] are the RAM's secondary timings - a lower timing is better (as it results in less latency). Jun 7, 2015 · Neither. Jan 21, 2017 · Cas Latency 14 Voltage 1. 3600 mhz cl18 has an effective access delay of 0. Voltage: 1. RAM modules with lower CAS latency will provide faster data access, resulting in improved system responsiveness and reduced latency. – CAS Latency. Jul 10, 2019 · Eyeballing two Corsair Vengeance LPX 2x16 kits at 3200. View full post Sort by date Sort by votes Example: if the speed rating of a standard module and a gaming module is the same (i. The new DDR5 memory will appear under the Trident Z5 RGB, Trident Z5, and Ripjaws S5 brands Jul 2, 2018 · RAM (memory) timings are complicated. DDR5 RAM CL30 vs CL36: Performance Comparison. The relationship between cycle time and frequency means that a CAS Latency of 8 cycles at 800 MHz is only as quick as a CAS of 16 at 1600 MHz. Jul 2, 2018 · CAS Latency, tRCD, tRP, & tRAS (Pt 1) the 16-18-18-36 Corsair kit somehow outperformed the 14-14-14-34 G. That means that, every time a new memory technology doubles the number of clock cycles 一、什麼是CAS延遲？ CAS延遲的英文為CAS latency，簡稱CL值，是指電腦要讀取記憶體的資料時，需要等待多久的時間才能真正開始讀取，因此兩個相同頻率的記憶體模組，CL值越高就代表延遲時間越長。 Nov 30, 2021 · How We Tested: DDR5 vs. There is a set of amazing looking ram with a CAS of 16 and a set of decent looking ram that has accents thta don't match my system with a CAS of 14. See at Amazon. Skill's 16GB and 32GB unbuffered DDR5-5600 memory modules with CL28 34-34-89 timings will be available as 32GB and 64GB dual-channel memory kits within the company's Trident Z5 RGB, Trident Z5 Nov 22, 2023 · 3. The Kingston Fury Beast RGB 32GB RAM kit is AMD Expo Certified and provides tight timings at a CAS latency of 36-38-38-80 (CL36) at May 8, 2023 · Just regarding the two ram configs you provided: (CL28 5600 vs. 35V: The lower the CL latency, the lower the true latency will be Feb 19, 2022 · 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. Feb 6, 2022 · You may notice the RAM timings while buying a RAM such as CL16-18-18-38 or CL14-14-14-34 or CL 16-18-18-36. They will not go down to anything close to 10-20 over time. Lower CAS Latency values, such as CL14 or CL16, generally indicate better performance but may come at a higher cost. Skill legt met de DDR5-geheugenreepjes met CL28 en een snelheid tot 5600MT/s de nadruk op de lage latency. Jack Apr 20, 2024 · In the realm of high-performance computing, memory plays a pivotal role in determining the overall responsiveness and efficiency of a system. Any clarification on this question would be appreciated. The lower the CAS latency, the better the RAM’s Samsung B-Die is a specific type of die (chip) used in some memory products. How much CAS latency Semiconductor engineers know that CAS latencies are an inaccurate indicator of performance; Latency is best measured in nanoseconds, which is a combination of speed and CAS latency; Both speed increases and latency decreases result in better system performance Aug 30, 2019 · Hi there, I am looking at the OLOy WarHawk RGB 32GB Ram and I see that they offer two different CAS latency options. It stands for Column Address Strobe Latency, and it's the star of the show when it comes to RAM timings. 35V Desktop Computer Memory UDIMM - Matte Black (F5-6000J3636F16GA2-TZ5K) $113 G. CAS Latency is a measurement of how many clock cycles it takes your RAM to process a command from your processor. For example, CL16 means that the RAM has a CAS latency of 16 clock cycles. It is the number of clock cycles that pass between the READ instruction and the instant that data becomes available. But you can frequently get CAS 16 or (rarely) 14 for even better latency with higher quality DIMM kits. Jan 9, 2023 · It's nice to see CAS latencies staying relatively low as speeds increase, though secondary timings are certainly a lot higher than those you'll find on slower kits. 0 Clocks", but NZXT-CAM says my ram model is labeled "3600C20" meaning the CL is 20. 99 and the other is 16-18-18-36 for $149. 77 ns for the 5200 MHz CL28. Die Latenz wird am besten als Kombination aus Geschwindigkeit und CAS-Latenz in Nanosekunden gemessen. In the example I mentioned above, I used 14-14-14-34. Dec 6, 2022 · The main difference between CAS latency 16 vs 18 is that the CL16-rated RAM is more optimized and faces less latency as compared to a CL18-rated RAM. What would you do? Apr 13, 2019 · As Ryzen likes faster RAM and if you are going to use built in GPU, 3200MHz would be better even with higher CAS Latency. DDR4. CAS latency determines the delay when accessing a now column of ram. CL is referred to “CAS Latency” and the number after “CL” represent the CAS latency of that RAM kit. The CAS Latency of RAM indicates the number of cycles it takes to get a response from memory once the memory controller sends over a column it needs to access. SKILL Trident Z5 RGB Series (Intel XMP 3. After discussing this with both manufacturers, it turned out that Jul 25, 2023 · Moreover, C36 RAM boasts a CAS latency of 16. DDR4 usually has a CAS latency of 16, while DDR5 will have a CAS latency of at least 32. Many people favour this type of memory as it can run at speeds of 3200MHz or higher while also keeping CAS latency low (CL 14). In simpler terms, CAS Latency is the time it takes for the memory controller to access a specific Jan 10, 2024 · Is there a noticeable difference between ddr5 6000MHz with cl30 and 6000MHz cl36? I'd pay more attention to the sub timings than just the primary timings. 76 ns 11. Memory Clock Speed: Consider the memory clock speed, measured in megahertz (MHz). Apr 11, 2024 · What is CL (CAS Latency)? CL, or CAS latency, is a measure of the time it takes for a memory module to access data. Jan 30, 2022 · CPU-Z Says my CAS# Latency (CL) is "15. RAM Speed. bg xm tj uo hr by wg cv wz oc