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⚡ Upgrade your desktop’s brainpower — faster, cooler, smarter!
The Crucial CT2K8G4DFRA266 is a 16GB (2x8GB) DDR4 desktop memory kit running at 2666 MHz with CL19 latency. It offers a balance of speed and power efficiency, reducing energy consumption by up to 40%. Designed for easy installation and broad compatibility, it supports modern processors and enhances multitasking performance, making it an ideal upgrade for professionals seeking reliable, cost-effective memory expansion.







| ASIN | B08C4T5Q5B |
| Are Batteries Included | No |
| Best Sellers Rank | 15,965 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 52 in Computer Memory |
| Brand | Crucial |
| Colour | Green |
| Computer Memory Type | DDR4 SDRAM |
| Customer Reviews | 4.7 4.7 out of 5 stars (11,608) |
| Date First Available | 9 July 2020 |
| Form Factor | DIMM |
| Guaranteed software updates until | unknown |
| Item Weight | 14.2 g |
| Item model number | CT2K8G4DFRA266 |
| Manufacturer | Crucial |
| Memory Clock Speed | 2666 MHz |
| Memory Technology | DDR4 |
| Processor Count | 1 |
| Product Dimensions | 13.34 x 0.08 x 3.12 cm; 14.17 g |
| RAM Size | 12 |
| Series | Crucial 2666 MT/s DIMMS |
| Voltage | 1.2 Volts |
| Wattage | 3600 |
J**C
Great value 32GB module
NOTE: To avoid any confusion - I bought 2x Qty of these 32GB DIMM modules, which are sold individually! - So pictures show multiple but you will only actually get one of these. (I was being tight - because it was about £8 cheaper to buy 2x individual at the time than a kit with 2 modules!) I decided to bite the bullet and get myself a memory upgrade. Seeing as recommendation in motherboard manual was to either have 1 DIMM, 2 DIMMs or 4 DIMMs. I decided to buy 2x of these 32GB modules. I'd only recently upgraded my existing 2x 8GB to 32GB by adding another 2x 8GB. So the natural thing was to take out the newly added 2x 8GB (which was 3200mhz RAM and use them elsewhere in another machine which could take advantage of it). Before ordering do note that this memory is UDIMM (unbuffered) memory, which should work for most desktop motherboards, and I'd say is pretty much the standard. Having checked, all my existing RAM is unbuffered (including some Crucial Ballistix 3200MHZ) - but worth checking out nevertheless before you order. I did manage to verify compatibility on the website for my motherboard. So these items arrived with minimal packaging, just a plastic protective case, which is fine and I do like this approach. Do note that this RAM doesn't come with heat spreaders. In my opinion they're unecessary, but it does mean you have to handle the modules with a bit care since Switching off the PC, and removing the old modules was fairly easy. Using the removed modules as a guide to work out which way around the new ones went in (though you'd work it out pretty quickly without). Simply then carefully push the new modules in, ensuring they go all the way along into the slot - be careful if you apply a lot of force and it's not into the slot straight, you could damage the DIMM module or the motherboard. Once in, I switched on and went into the BIOS to check the memory was detected - it was. The new modules are 2666Mhz, but my existing 2 RAM modules are 2400Mhz RAM, so the overall running I believe is then restricted to the lowest of the RAM speeds. For me this is fine and as people say, in everyday usage you're usually better off with more slower speed RAM, than less amount of higher speed RAM. Running in WIndows, Task Manager shows up all the RAM, and I can now happily run multiple VMs etc without excessive paging to disk. It's only been one morning but complete stability as far as I can tell. Please assume that this is the case ever since this review - if are any problems with these modules at any point in future, I will be updating this review to reflect that. I bought 2x of these modules at £128 each at time of review and I felt it's good value at the price. Definitely very happy so far. Hope you found this useful.
A**L
Basic RAM, easy to install, great value
The packaging: I ordered the 32GB kit which consisted of 2x16GB DDR4-2666 UDIMM sticks. They come in plastic packaging to keep them safe for transport. The packaging is able to be opened by hand which is a huge positive for me as quite often things like this come in plastic packaging which has no discernible opening and which must be opened by either knife or scissors through a layer of plastic then prised apart. Not so with this. Just insert your finger into the packaging and then open away. Excellent. The only improvement they could make to this would be for some more environmentally sound packaging. The memory itself: Please, please, please, check what RAM your motherboard and CPU supports before ordering it. If you do that, then I have no doubt that it will just work straight out of the box. Crucial does a great job of providing a compatibility checker on it's own website which I would highly recommend checking out before ordering any RAM. The installation: This couldn't be more simpler. Locate the correct RAM slots on your motherboard (this is going to vary by motherboard supplier), pull on the tabs to open up the slots and then click in the RAM sticks into each slot. If you are installing 2 RAM sticks into 2 slots, this is fairly straight forward. If you have 4 slots like I did, then make sure you're populating the correct two slots - again, check the manual of your motherboard for details here. If you already had a RAM stick in any of the slots that you're using, take it out before installing any RAM. There is a correct orientation of the RAM stick, if you look at the bottom of the stick, you'll notice there is a notch in it, which is slightly off centre. Use this notch to line up the RAM stick into the RAM slot and press it in. It can feel quite firm, so don't be scared, it should just be able to press in with a click by firmly pressing down on both sides of the RAM stick. Conclusion: If you want/need more RAM, this is a great, low cost option for adding some extra memory into your system. You'll notice a lot of improvement if you're coming from a lot less RAM (I went from 8GB to 32GB). The sorts of improvements you can expect are better performance of multi tasking which is absolutely essential for someone like me who has many processes running at the same time. Also, if you're a Chrome Tab lover, you can't get enough RAM.
A**R
Item as described
Item was posted same day and arrived before expected date. Fitted to my Aorus motherboard and working a treat. All for a reasonable price. Thanks
S**R
Necessary addition
Bought a pre-built due to the GPU market being in a bad state, thing came with 8GB of RAM (this model) which would have been fine for my needs but the numpties that built it went with a single module as opposed to 2x4, leaving me with a rig running in single channel. Happy with the rig mind, but this was a much needed upgrade, both for future proofing and performance improvements all around. Ideally I'd have RAM at higher speed, 3200 is a good sweet spot but I didn't see the need to fork out £70 - 80 for another two sticks and picked up another one of these to tide me over for a bit instead. Easy to install, as RAM should be and cheap + cheerful.
S**L
good product and working 1st time, but be aware you can't mix and match with other brands!
For a novice like, it took a while to figure out that what's the right memory config for my kid's HP desktop pc which was hosting a 4gb samsung ram but slowing down by every minute because of windows 10(i know!). After going through different reviews and delivery lead time, I opted for it with the unrealistic hope that the total memory will increase to 12gb. But as many expect(unlike me) the computer wont recognise the two rams from different brands, so I ended up taking the samsung one off and putting this one on..I might opt for another of this in the coming 2-3 months, if it is stable and running smoothly to increase the ram to 16GB. Nothing of the fault of the product but this wasnt mentioned anywhere in spec, so I thought I should mention this to make other novices like me to be aware..:)
た**こ
購入して数か月経ちます。何の問題もなく利用できています。
H**H
It's good for basic tasks and coding and programming.I purchased at 1750rs. Little bit high rate but ok good with 10 years warranty.
A**N
Le memorie Crucial acquistate sono perfette per il mio server. Ma non è stato così da subito, perché alle prime 4 arrivate ho dovuto fare un reso di 3 perché non funzionanti, peccato, mi servivano velocemente e la cosa mi ha fatto perdere un tempo che non vi dico. Allora ho ordinate subito le 3 che mi servivano da un altro fornitore e questa volta è andato tutto bene (3/3 funzionanti). Cosa è cambiato? Il fornitore? L'involucro delle memorie? Per il fornitore non ho info per dare un parere, invece per l'involucro che le conteneva può essere d'aiuto l'immagine. Sarà questo?
J**E
After upgrading from Windows 10 to Windows 11 my Dell Inspiron 3670 was running low on available memory. This item matched exactly the specs of the SK Hynix 8GB stick that was already installed. The price was great, and it arrived 3 days sooner than estimated. I was able to install it easily, and now my computer runs like new.
N**D
Har börja använda mig av ramdisk dels för att det går snabbare och dels för att inte belasta ssd-minnet så mycket. Kör debian. Stabilt, bra, billigt.
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