Crucial RAM 4GB DDR4 2666 MHz CL19 Laptop Memory CT4G4SFS8266

This 4GB RAM is 2666Mhz SDRAM with latency of CAS 19. It can function as 2400Mhz RAM with latency of CAS 17 in case you already have a 2400Mhz RAM in another slot or your bus don't support 2666Mhz as in case of AMD laptop CPUs which only upto support 2400Mhz. You can install this RAM in your laptop only if you have an extra empty SODIMM slot or if your current RAM is damaged and you want to replace it. Many laptops nowadays come with soldered RAM which can't be removed or upgraded and in such cases, this RAM is not to be bought. Also, one must take care that the RAM slot is DDR4 and not any other type as DDR4 RAM will not fit in DDR3 or DDR2 slots. Dual channel support- There is a misconception that dual channel requires 2 identical RAM of same size, same brand and latency. This is only partly true. One van easily install 4Gb RAM along with another 8GB RAM (or even 16GB RAM) and still get a partial dual channel mode called "FLEX" channel where 4GB from both RAM sticks will be in dual channel while the extra RAM will be in single channel. The performance difference between dual channel and flex channel is minimal at about 2% FPS reduction when playing games. But the cost difference is about Rs 1300. If one doesn't need 16GB RAM, then installing 8+4 = 12GB RAM is enough and one doesn't have to fear loss of dual channel and save some money in the process. I myself have installed this RAM along with another 8GB SAMSUNG RAM. One has to only ensure that that CAS latency and Mhz speed to be identical to ensure maximum performance in flex channel mode. The performance of Crucial RAM and SAMSUNG RAM appears identical in all the benchmark tests I have run. The only negative is that Crucial only offers 3 year warranty whereas companies like ADATA offers 10 year warranty.

The ram is working flawlessly. No doubt about it.

Installed without any struggle, but care to be taken whether it sat properly and while removing backpannel. AT THE END , UPDATE OF 16 GB ram Please See Till END. My laptop is hp-bs series with i3 processor. Before it was very difficult to run virtual machine for me, after installation I can run 2 to 3 VMs and many more tasks. I have attached images, slot 1 is manufacturer-assembled, slot 2 is crucial's check them. And latency is different but somehow ok. "Only problem is with Amazon's packaging, it just came in pop-up cover and no carton box... Amazon has to look in this regard" UPDATE: Bought a 16gb ram single stick This works fine Always buy single rank don't waste money in dual rank. (many sellers tell single rank as dual rank...) PS: if you have only one slot in your laptop buy only single rank one if you have dual channel slots then u can buy dual rank then it works fine. I personally experienced this.

Product is very good.. Thank you amazon...

I am reviewing it after 21 days of use on my hp 14qcs0009tu laptop. Laptop has 4 GB inbuilt ram in one ram slot so I add another 4gb crucial 2666mzh ram on 2nd ram slot. Now my laptop works like a charm. Now I can run heavy software on my i3 7th gen laptop very smoothly without any lagging problem. I am very much happy using this product. It also comes with 10 days of replacement and 10 years of warranty.i recommend to buy this product. But before buying please check the compatibility. And recommend to install it by any professional if you don't have any knowledge and if laptop is in under warranty before installing it please call customer support because it might be void your laptop warranty.else good.now in my system shows that 2 ram work as dual channel ram together. It is budget friendly and value for money product. Go for it. Thank u Amazon for fast delivery in the middle of this pandemic. It's a 5 star product.😊🤗

Bought this as an upgrade for an Asus X510QA-EJ201T also purchased from Amazon, which came with 4gb ram. The laptop motherboard has a bus speed of 1866mhz but the preinstalled soldered memory was hynix 2666 mhz. So for compatibility i bought this Crucial 2666mhz 4gb sodimm. Works perfectly with the hynix, no issues whatsoever. Only the packaging leaves a lot to be desired. The packaging can easily be opened and closed again, there is no seal or tamper proof pack. I gad bought an unknown Dolgix ram 2 yrs ago from amazon for a desktop and has to cut the plastic tamperproof pack. Crucial being a brand must do better where packaging is concerned. Strictly speaking all ram is now similarly generic.. all are good, but when u get a brand like crucial at a great price, better to go for it.

Good

I purchased it after good research about this company. I found it genuine and trustworthy. It was cheaper than other RAMs of the same specification. After purchasing it and applying it to the second slot of the laptop, my laptop is able to adjust to it quite nicely and it is performing fine. No issue at all. 4 GB RAM has become almost useless these days if you are using Windows 10 and a good user of Chrome. So 8 GB has become almost a must. So this RAM of 4GB is a good option to increase the RAM if you already have one. If you are purchasing it for using it as a single RAM, please consider your decision once. Go for at least 8GB of RAM because that has become a must in current enviroment.

My laptop had a spare slot for more memory, so I eventually got round to filling it. I opened the laptop slotted the memory in, closed up and it worked as it should. Now the laptop runs somewhat faster than before having doubled the RAM from 4Gb to 8Gb. Very good and very pleasing. It's worth noting that I do not use this laptop for gaming, because it does not have a gaming GPU, so extra RAM would have little effect on its gaming capabilities.

انصح به

l'ho installato nel mio nas Synology DS220+ e nonostante non sia indicata come ram nella lista di compatibilità del produttore, funziona e viene riconosciuta subito. Va fatta attenzione nell'installazione, ovvero va sforzato leggermente l'ingresso nella base di montaggio in quanto potrebbe non fare contatto (nonostante si senta il classico 'click') e il gioco è fatto. consigliatissima!

Precio muy competitivo por 19,99 € que me ha costado. La misma memoria de 4 GB de la marca Synology cuesta alrededor de 100 €. Es como 5 veces más cara la memoria de Synology. Y esta memoria de Crucial ha sido isnsertarla en el slot del NAS y funcionar sin ningún problema, y sin configurar nada. Muy fácil todo. Y muy buen precio.

Ürün gayet güzelce paketlenmiş şekilde elime ulaştı. Ancak bilgisayarıma uymadığı için iade talebinde bulundum. Sorunsuz şekilde iade işlemi gerçekleşti. Hem satıcı hem de Amazon'a teşekkürler!