





⚡ Power your productivity with Crucial speed and efficiency!
The Crucial CT8G4DFS8266 is an 8GB DDR4 2666 MT/s unbuffered DIMM RAM module designed for professional-grade PCs. It delivers fast data transfer speeds, reduces power consumption by up to 40%, and increases bandwidth by up to 32%, making it ideal for multitasking and next-generation processor platforms.






| Brand | Crucial |
| Product Dimensions | 13.34 x 0.08 x 3.12 cm; 13.61 g |
| Item model number | CT8G4DFS8266 |
| Manufacturer | Micron |
| Series | Crucial DDR4 2666 MT/s DIMMS |
| Colour | Green |
| Form Factor | UDIMM |
| Standing screen display size | 16 Inches |
| RAM Size | 8 GB |
| Memory Technology | DDR4 |
| Computer Memory Type | SDRAM |
| Memory Clock Speed | 2666 MHz |
| Voltage | 1.2 Volts (DC) |
| Hardware Platform | PC |
| Are Batteries Included | No |
| Item Weight | 13.6 g |
| Guaranteed software updates until | unknown |
A**S
Dell XPS 8930 accepted these instantly and they work perfectly, no hassle.
My interest in photography means my pro camera puts out a 76Mb file for each RAW image (digital negative not a jpeg). To process the RAW image, editing software like Photoshop is needed. The Photoshop software takes a good 35 seconds on average to load, with another few seconds per image. On my original 8Gb SODIMM system it was a bit longer as pagefile swapping was going on. I upgraded to 16Gb last year, which helped, and now all four memory sockets are filled with this additional 16Gb. On my XPS8930 i5 the installation was simple. If you are new to this, the memory slots have a flick switch at each end. push them outwards, slip the memory module into them, and press down quite firmly, the switches on each slot should both be closed with the pressure, you may hear a click from each. Make sure the card is the correct way around. Also check your computer manual to make sure you have bought the right speed and number of pins, laptop memory has a different pin arrangement to desktops. In performance, the FIRST time I run Photoshop, there is no difference - the first load depends on my hard disk delivering the data, and it is a bottleneck. However, once you have run Photoshop (and any other software) and maybe closed it to do something else, the SECOND run of the software loads really fast. I will stop typing this now, and run Photoshop twice, and give you the load times - 1st run = 36 sec. closed photoshop and re started it - 2nd run = 4 sec. Microsoft Word 2016 first run = 6 sec. second run = 2 sec. So as you can see, with such a large reserve of RAM available, your computer responds quickly on the second loading of software. This is because most of the code for your software remains in RAM memory even after you close it, so the second run just requires some basic elements to be re-loaded from hard disk, while the bulk of the software is already loaded into fast RAM memory. To overcome the load speed bottleneck issue I still have, I have bought from Amazon a Sandisk 1Tb 3D NAND SSD (Solid State Drive) This will be used to clone my slow hard disk, and the load times for the first load, thereafter, should be close to the second load times I am seeing now. The times for the Second load, with my new SSD installed are likely to be pretty much instant. A hard disk reads data out into RAM at low speeds due to the fragmentation and consequential seek times. Photoshop, for example, consists of hundreds of small files all needing to be 'assembled' in order, and loaded into RAM. Each one of these small files could be fragmented on the hard drive due to the daft way Windows has always stored data on them. Defragmentation helps, but two days after you do that, it needs to be done again as many of your favourite apps have been loaded and fragmented again. SSD drives have no moving parts so can access data instantly. The typical speed of a hard disk is to read data at around 20 - 30 megabytes per second (depending on brand, size, and rotation speed). The SATA SSD drives read at 340 megabytes per second! The newer M.2 SSD Drives can hit over 3000 megabytes per second!. Be careful, only quite recent motherboards have an M.2 slot on them - but mostly anything less than 3 years old will have SATA 3 (SATA III) connections for a SATA SSD. The point I am making is that you should not expect miracles if you ONLY upgrade your RAM memory. I have spent in all, around 170 pounds, the memory 56 and the rest on the drive, a drive caddy and a cable. The computer will run like a rocket when the drive gets here later this week, Look at reviews on SSD drives, and look at CLONING your hard drive, so you don't have to install windows and all your stuff manually. Once you have cloned it you can unplug your main hard drive, tell the computer bios to use the SSC as the 'boot' drive. (access by tapping F2 on the keyboard on my Dell as it starts up). It is quite simple. Oh yes, if you do this, look at youtube 'how to install an SSD' and download cloning software - Macrium Reflect - it is free to dowload and use the home version. Get the RAM but get an SSD too! You'll think your computer has changed from a Ford Fiesta into a Porsch!
M**K
A value for money performance increase.
I bought these to increase my new HP Ryzen 5 Desktop to 16GB. Straightforward installation although my desktop is a smaller midi type, so big hands in small places can be a little tricky, patience is the word here. This additional memory has worked perfectly well and so has the reason for installing it too. This increase has allowed me to turn off the windows ssd virtual page memory, which has given a sight speed increase on load screens, particulate on the game I play. Why pay all the extra for a 16GB system when you can get an 8GB and easily upgrade the other 8GB yourself with a good cost saving ? A total breeze to install and reliable performance, this type of upgrade is a no Brainer!
M**T
Perfect for gaming!
Just because this isn’t a gaming brand or advertised as gaming ram, it is spot on, you could get faster clock rates rather than 2666. But this does for any gaming needs. Will do for any software needs as long as you have enough ram for the game / programs. I’ve played COD Warzone, GTAV, rocket league and many others. All with good loading times.Perfect for a budget gaming pc.Perfect for a high end gaming pc.Perfect for an office pc.Perfect for any pc that requires DDR4.Don’t waste your money on “high end” brands because you’re paying for the name.I say this because I previously bought hyperX ram for an older build and I cannot notice a difference between that ram and this crucial ram. Yet I paid 1/3 the price this time for 2x the amount.
A**R
Easy, quick upgrade to HP desktop PC
Was available cheaper elsewhere online (7dayshop) so only 4* not 5; but I plumped first Amazon as wanted quicker prime delivery. The RAM came in a couple of days. Easy to install into a HP EliteDesk 800 G5 SFF desktop (took less than 2 mins, no tools required) and was recognised immediately upon reboot by the PC. RAM is now doubled from 8 to 16Gb and working in dual-channel, noticeably quicker opening apps and programmes so initially seems worth the ~£30 paid.
M**F
A great upgrade to my computer
The memory chip was reasonably well packed when it arrived.Installation would normally be easy but as I installed it in a Dell Inspiron compact desktop it took quite an effort to get it it in as I had to remove the hard disk as the free memory slot was under was under the disk,The rating for (Easy to install) reflects the Dell computer not the product.Once installed everything worked fine as it was the exact match to the existing installed memory.
S**B
Does what is says on the tin..... Very Well!
Easy to install and upgrading from 8gb to 16gb has certainly made a notable difference to the operating speed of my computer. Whilst the computer has recognised that it is not the same as the existing (Samsung) Ram, I have not noted any problems whatsoever. Not cheap by any means, however, if you are performing memory intensive processes, it is highly recommended!
R**B
Worked well first time
Used to upgrade a well known brand of PC from 16 to 32 gb (doing a lot of video processing during lockdown and this helped with the graphics card load and speed) - son kindly put it in and it worked first time - and has been since - hopefully it will continue to work and it has helped with video processing speed....
C**N
Not the best looking, but works like a charm
This RAM is a dream for Intel users trying to build a budget/mid range PC. At the sacrifice of colours, RGBs and cool covers, this is a bang for your buck; simple RAM that fits DDR4 motherboards and does it’s job.
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