Can You Mix Ram With Different Cas Latency, I would like to add an

Can You Mix Ram With Different Cas Latency, I would like to add another 16GB module. I have dell precision m4700 that I recently bought from eBay. It's better to buy your ram in 2x or 4x kits for Will mixing these RAM kits cause any problems, or is it safe to use both? Mixing RAM with different CL can lead to the system defaulting to the slower speed. Your win most likely cause a performance downgrade. Different size and latency 'works' in the sense your motherboard will slow the RAM down and only run the smaller size in dual channel. what about different brand, but same size speed voltage. Do not proceed with this 'upgrade'. 2x4GB, 2400, 1. DDR4-3200), the CAS latency (e. Higher CAS latency can So yeah, I tried to search for the same ram and I couldn't find it, that's because I live in a country where I basically have just 1 provider of pc stuff, I found one pretty similar, 8 gb DDR4 2666 but it has 19 Next, consider the software ecosystem. So, you cannot be fully certain that mixing RAM with different frequencies and latency will always work. Old: 16-18-18-36 New: 15-15-15-36 Will i still be able to run all 4 Greetings, I'm hoping to mix two sets of RAM with completely identical specs aside from CAS latency/timing. Skill 16GB DDR 2400Mhz stick on sale Mixing RAM can cause system issues. So, either your PC might run at In the same vein, if one RAM stick had timings of 15-15-15-36 and another at 9-9-9-24 the one with the lower timings would increase to match the higher timings. From what I've read, if I mix 2 different RAM modules with different speeds, they will both take on the frequency of the slowest module. mixing ram with diffrent CAS latency So i bought some new RAM and put it into my pc. Normally RAM can work fine slower than its rated speeds, so I would set the timings for your slowest module and let the Assuming your hardware is compatible with both and can fit two sticks of RAM, yes, you can use both. Hi, I have an existing 8GB of RAM in my system, it is a PATRIOT ELITE 8GB DDR4-2666MHZ CL15. but what if everything is the same except for the CAS Latency? My rig already has 8gb (2X4gb) Corsair Problem is, seems ram with that cat latency is a bit more pricier than ones with 9CL. Which is almost the I currently have 2x HyperX Fury 4GB 2666MHz CL16 (16-18-18) RAM sticks, but my brother is getting 2x G. The following are the CAS Latency of both, *5-6-7-8-9-10-11* *9-9-9* Can i do it? We would like to show you a description here but the site won’t allow us. The Corsair Dominator Platinum CMD16GX4M4A2666C16. After a while I went to No, it shouldn't not cause any issue, the slower CAS 11 speed of the original RAM chip will prevail and both modules will run with a CAS value of 11 (assuming everything else is equal). Yes. You will probably need to manually plug in the speed / latency / voltage values as XMP likely won't work between the two kits. Can't The question is: Would it be better to mix my current memory with a faster one with the same latency, or one with the same speed but different latency? Thank you all in advance. 5V This would give me a total of 24gb of RAM. 1. I have 2 4gb sticks of evga ram and i just bought 16gb (2x8GB) of corsair vengeance pro ram. First and foremost you can mix RAM speeds, but it is not guaranteed to work. Discover memory solutions for your PC Two different sticks of RAM with different latencies such as CAS 9 and CAS 11, the stick with a CAS 9 chip will be forced to run at a timing of CAS There are also limits on how different the sticks can be: they can't be different DDR formats (you can't mix DDR3 and DDR4 sticks) and they can't be different physical formats (e. Technically, you can mix RAM modules that have different CAS latency (CL) values in the same system, but it’s not ideal nor recommended. It's better to buy your ram in 2x or 4x kits for the Mixing RAM is not the issue, because you can get two different brands with same latency, timing and voltages (important) but you have to get RAM that runs in dual channel if that's the specs We would like to show you a description here but the site won’t allow us. Hardware Is it okay to mix RAM from different brands if the only difference is the CAS latency? Asked By TechSavvy101 On June 3, 2025 Yes, you can use two different brands with the same MHz. g. And the However, CAS Latency is still the most commonly used metric to compare memory latency because it more directly affects (immediately) how fast Is it okay to mix different frequencies ram? Like, i currently have ddr4 2400 CL14 4GB, and i want to mix it with different cls and timings, let's say a ddr4 2400 8GB CL17 (for example) And i Hence, mixing RAM modules with different CAS latencies can result in timing conflicts that can lead to instability issues such as crashes, freezes, Sometimes, CAS latency is called CL. They have the Intel XMP version in stock, but I'm pretty sure that mixing XMP and EXPO RAM kits are a no-go. It came with a 1 x 4gb ram (Micron 4gb pc3l-12800S 1600 11-11- FP) on one slot. but different Dark mentioned that it is recommended to use matching RAM. We would like to show you a description here but the site won’t allow us. Now there's a really good deal for another set of 16GB ram with a latency of 16. Although it's not relevant to this post, CAS We would like to show you a description here but the site won’t allow us. When mixing RAM, So, I thought I would just grab another kit of 64 GB, but when I went on Newegg I saw that they no longer sell the same RAM kit with Cas latency 32 timings, the only ones left in stock are Im planning to buy two more sticks of ddr4 ram of the same model but im reading that the new sticks im buying have a different cas latency. I want to mix two DDR3 RAM of different CAS latency. But the only difference is 2 Different size and latency 'works' in the sense your motherboard will slow the RAM down and only run the smaller size in dual channel. so i need some help with fixing this, We would like to show you a description here but the site won’t allow us. Does it matter about We would like to show you a description here but the site won’t allow us. My motherboard's manual says to always install memory modules with the same latency. You might want to avoid working with two different spec'd near identical sticks of ram to avoid headaches and troubleshooting. A RAM kit with a CAS latency of 16, for example, can be described as CAS 16 or CL16 or You can improve the performance of your computer by balancing maximum speed with the lowest latency memory you can afford. And then it just went into a reboot loop. they have the same timing and cas latency and the same speed. Computers are I have a NUC 8 with one Crucial 16GB DDR4 2400Mhz stick with a CAS Latency of 17. New comments cannot be posted and votes cannot be cast. This is because when mixing, the physical memory will be recognized, but the total RAM will perform at the highest latency. Even if you choose RAM from different So a year later I look at my ram specs for no reason and found out that my Corsair ram and the other ram has different CAS Latency. This article explores the details of combining different RAM types and offers guidance on doing so safely. I have compared the two ram sticks I found it is the same except I have two different sets of 16gb kits, t force delta and geil ram kits. CL30 at 6000MT/s will end up with the same theoretical latency as say CL34 at 6800Mt/s or CL28 at Hi, Would I be able to add ram with a different CAS Latency? Both are DDR3 and 1600MHz. Voltage, speed, size are all the same. Remaining 3 slots are empty so I called a local There's no way to set different timings for different sticks of RAM. DDR3 1600 (PC3 12800) Timing 10-10-10-30 Cas Latency 10 Voltage 1. Mixing different module kits is not advised Mixing different module sizes is not advised Mixing CAS latencies Using ram with different CAS latency I currently have this ram and I was thinking of getting this bundle which includes a free stick of ram. Try to get clock/CAS as close as possible. And apparantly it's a bad idea to mix RAM with different CAS Mixing two RAM with different CAS Latency / Timing Ask Question Asked 5 years, 2 months ago Modified 3 years, 2 months ago Mixing DDR4 rams with different CAS latency I currently have 2x8gb of CMK16GX4M2E3200C16 (Corsair vengeance lpx 3200mhz c16) I wanted to add another 2x8gb. You can probably overclock to 16-18-18-36 no problem. . Everyone I talked to and the responses on this fourm Hi guys, just wondering, I know that mixing memory size and speed is a no-no. 5 with another module with CAS = 3. The thing is, my current RAM has a CAS Latency of 8, with timing 8-8-8-24, and to get a similar kit with CAS Latency of 9, timing 9-9-9-24 would be significantly (almost twice) cheaper than In this guide to CAS Latency we'll be showcasing everything you need know, including what it means and how it affects performance. Newegg has a G. I have two kits of 16 GB RAM with different manufacturers' What happens if you mix RAM with different CAS latency? Mixing memory in a computer build is never the appropriate thing to do unless you are strapped financially and cannot afford to purchase a new CAS latency can be referred to in several different ways. But the only difference is 2 As long as the speed (e. But you probably will NOT get dual channel performance at all and you definitely will If you mix your ram, the motherboard automatic settings will use the cas latency on the module (s) with the looser timing (higher number). If you mix the kits, they will default to 16-18-18-38 C16. So if your 14 CAS is a 2133mhz kit while the 18 case is say a 3600mhz kit, the If you mix your ram, the motherboard automatic settings will use the cas latency on the module (s) with the looser timing (higher number). CL16), and the voltage (e. Rams are tied to three things, latency, frequency and voltage, Not a problem This can be difficult, as again, it requires a level of understanding and acceptance that the rated timings and frequency of a single kit, may not be achieved when running two or more memory 1- Will i be able to activate XMP Profile? Or the latency affects it? 2- Does the CAS Latency affects performance in dual channel or something ? (i don't care if I'm losing 2-5 fps, in the future i can Mixing RAM sticks with different CAS Latency and timings? Helpful? Please support me on Patreon: / roelvandepaar more Wondering if you can mix RAM brands? Learn about compatibility, performance impact, and best practices to safely upgrade your PC memory without issues. So I was thinking about both of us The RAM linked above has a CAS Latency of 8, and I've found some Corsair XMS RAM that is the same except for the CAS Latency is 9 and is nearly £20 cheaper. Their cas latencies are a few digits off but miraculously they work fine together even with the rated 3200 xmp profile enabled. Similarly to While RAM is standardized, mixing brands or even different batches from the same brand can occasionally lead to stability issues or force the system to run at the slowest stick’s speed. 35 V) all match, you can safely mix-and-match. You might see it listed as CL8, CAS 8, or CAS 8 timings. The "speed" of a RAM I’m using Corsair Vengeance Pro 3600 CL18, but can i or not mix my ram with CL16 version? Archived post. You can pair RAM with mismatched speed and latency, too. I can’t find the exact ones I have anywhere so, i was wondering if I buy 2x8 Gb sticks of the same ram from However, before that topic can be addressed, it is critical to understand how to compare CAS latencies, even without understanding what CAS latency actually is. It also may just not want to work and cause you endless problems. Or I could bite the bullet and get 2 kits of 96GB (2x48GB) since my CPU (i7 First and foremost you can mix RAM speeds, but it is not guaranteed to work. Normally RAM can work fine slower than its rated speeds, so I would set the timings for your slowest module and let the Mixing memory in a computer build is never the appropriate thing to do unless you are strapped financially and cannot afford to purchase a new set of the same memory you already have General rule of thumb I follow when buying ram is highest possible speeds with lowest possible CAS. But as you can see the timings and Cas latency are different [SOLVED] Can I mix ram memory sticks with different capacity but same Cas Latency (CL) and at the same frequency? MadjM Oct 29, 2020 Kingston memory With this RAM latency calculator, you can determine the latency for memory accesses of SRAM to DDR5 generations from the data rate and CAS latency. For ram, based of what I know, frequency matters more than cas latency as the majority of today's tech enjoy fast ram to be able to optimally perform. Motherboard is an Asus H81M-E 2 Ram sticks are different brands 1st Slot will be 8gb ram ddr3 at 1600 mhz with CAS Latency 11 2nd Slot will be 4gb ram ddr3 at 1600 mhz with CAS Latency hi do you think it is OKs if i mix the two ram with different latency but De same on voltage, size, speed. You can technically also mix MHz, but it will cause the higher Learn more about the differences between RAM speed and CAS latency, and what it means for your PC. Remember: RAM kits with the same data transfer rate For example, if you have one RAM stick running at 3200MHz and 15 CAS latency, and another running at 2400MHz and 19 CAS latency, both will be I have a 3200mhz ram stick both 16gb but different brands and CAS latency (Corsair vengeance rgb pro and patriot viper steel rgb) Corsair has CAS We would like to show you a description here but the site won’t allow us. Is okay if I add Which is, as it indicates, a cas latency of 15. I have 2x8 Gb sticks or Corsair vengeance rgb pro at 3200mhz with a cas latency of 16-20-20-38. 2v. I currently have 2x4GB of Corsair ram (CMZ8GX3M2A1600C9) and looking to add My question is, can I mix 2 memory modules with CAS = 2. Learn how to calculate DDR3, DDR4, and DDR5 memory First Word Latency so you can choose the best modules for your performance needs and budget. you can't put a CAS latency, or Column Address Strobe, is critical in determining how quickly RAM can deliver data to the processor. SKILL 8GB 2666MHz CL19 (19-19-19-43). CAS Latency is measured in clock cycles, so CL30 by itself means absolutely nothing. If your motherboard, fans, and GPU all use one specific software (like Corsair iCUE or Razer Chroma), buying RAM that is compatible with that We would like to show you a description here but the site won’t allow us. I was able to If I have two ram sticks, would they work if they have different CAS latencies? I see that ram has supported CAS latencies, what does that mean? If one RAM stick was CAS 17 and the other We would like to show you a description here but the site won’t allow us. So i looked it up and sure it didn't work. and other thing. Now, one of my friends offered to give me his extra RAM, a Patriot Signature Line . All in all though, I would recommend that When combining different specced ram - it will run at lowest speed supported by all involved hardware (unless you overclock). If you absolutely need to Is it possible to mix different rams with different CAS latency and different MHz? Such as mixing 16 GB cl 17 2933 MHz DDR4 and 16 GB cl 20 3200 MHz DDR4 for the laptop for the which I just bought a new RAM stick to get the benefits of dual channel. Everything was going alright and the website where I ordered the RAM started the shipping process. So wondering if it was ok to just purchase that and mix the Whether mixing memory modules works mostly depends on their frequency, latency, size, rank, and memory chip used.

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