Crucial RAM 8GB Kit (2x4GB) DDR3 1600 MHz CL11 Laptop Memory CT2KIT51264BF160B

This memory works great in my Alienware M17x-R2 laptop (Intel Core i7 Q740 1.73GHz, *8MB DDR3-1600, NVidia GeForce GTX 285M-1GB, 2 x Samsung 640GB SATA 7200RPM HDD-RAID1 configured, and WD Elements 1TB eSATA HDD).I usually try to give informative unbiased reviews unless the product is trivial, like cables and novelty items. Sometimes my reviews can be a little wordy, but I do it mainly to help novice to intermediate users. This particular review, became more of an Alienware review than it is about the memory. I any case, if you are an Alienware owner, you should know this memory will work for you.The improvements I've noticed by upgrading from 4GB (DDR3-1333) are small at this point, but significant since I'm no longer having crashes from insufficient RAM particularly when I switch between log-ins. I'm running a lot of peripherals and multiple Operating Systems; Windows 7 Pro SP1 64bit, Red Hat Fedora 20, and with MS Virtual PC 2007, I'm using XP Media Center Edition 2005 SP3 32bit, Vista for Business SP3 32bit, and 7 Home Premium SP1 64bit. I know this system is compatible, but I haven't installed Windows Pro 8.1 64bit yet and I'm still not sure if I want to. I use this system for both gaming and as reference with desktop support calls, which is why I use two versions of Windows 7 and probably should add 8.1.The boot time has improved moderately for each of my operating systems, in some cases only by a few seconds which I attribute to my multi-boot configuration. Load times for some software under Windows has also improved, as with Adobe Photoshop CS5, and The Sims 3. Virus and malware scanning time has been cut down by nearly half the time. Since this system memory bus can only support 10666MHz, I am not seeing any changes in benchmarks due to the 12800MHz capable RAM upgrade, nor did I expect to. The memory is perfectly stable at the slower rate. Windows Index Rating also remains the same, and because Linux has low overhead system requirements - it's still just plain fast.I would have bought the 16GB kit, but I was getting conflicting, false, or misleading information about the maximum limits from my owner's manual and Dell technical support. The manual says 8GB and I have 3 different answers from Dell's staff who stated a) ...your system was delivered with the components it was designed to support... it took several tries for me to understand the accent before I realized he was implying it cannot be upgraded at all, b) The system will support up to 16GB, providing you have updated the BIOS to version A12, however, that was erroneous because the last firmware release is A10, and c) Windows only supports up to 4GB of RAM... which is argumentatively true under a 32bit environment and XP, but I'm mainly running W7 64bit so the response was irrelevant. Other sources claim it WILL support 8GB and may or may not support up to 16GB. I was not willing to risk the expense and hassle of finding out first hand and went with 8GB based on my manual and the fact that it was the largest kit offered on the Dell website for the M17x-R2.I've used Crucial Memory in several computers over the past years and have always had excellent results. The reliability has been unsurpassed by other makers. Its stability has given me and my clients months of run-time without failure in servers, desktops, laptops, and even printing devices.I hope this helps.

Good speed, installation was easy. Helped keep an old computer going.

It fits and works right every time and you never have to wonder or worry about fakes, as long as you're buying from Crucial. They have a RAM/Storage tool on their website that will show you exactly the type RAM that is required for your model. It's my go-to... I've been 100% satisfied for over 20 years.

Purchased this memory for my Desktop computer. Arrived in great condition, and worked without issues.

Never had a problem with Crucial memory.Price and operation well worth it.Thank you

I purchased this with the intention that most people do-to make the little hamster wheel inside my laptop spin a little faster. What I didn't realize was that when the manufacturer of said laptop specified "Upgradable to 4GB RAM", they didn't mean that it was user upgradable.After opening up the inexpensive laptop I intended to upgrade, searching through the user manual, Googling, and risking permanent damage to the motherboard by playing around with the components and my screwdriver-it became obvious there was nowhere to insert the chip. I have previously replaced the memory in my older, now dead Macbook and it was a piece of cake-easy to find. So I improvised. I opened up a different laptop. What do you know. There's a slot waiting for it like it was a match made in heaven.This thing zips around like a hyperactive kid that just ate a monster Pixy Stix. It is FAST. Doubling any computer's memory from 4 to 8 GB will make anything buffer faster, pages load faster, and increase the video speed. I am SO glad it wasn't a waste-this was easy to get in (when the computer will allow it!) and completely worth the money rather than paying the manufacturer or Geek Squad to do it for you. Anyone with a screwdriver and a brain can do it!

Worked as expected and shipped nicely.