2GB PC2-5300 667MHZ DDR2 Sdram

Ram performs as expected. However the Toshiba laptop I put it in won't read other piece of ram in it now.. This is not unusual for a Toshiba laptop I have two of them. These are early model Vista system laptops with both 32 and 64 bit capabilities and you should be aware of limitations of your operating systems and ability to read ram. Don't shoot the product if it's not the products fault. Vista is first of resource hogging systems but they are very stable. Both laptops about 8 years old and still run perfect. If you have problem with speed or performance look into "Ready Boost Option for Vista operating system" which requires using a thumb drive or any other added usb drive for increased performance. This is a great fix. I am running max ram on 32 bit Vista Home Premium (3 gb) is all it will read running 32 bit) and I still use the "Ready Boost Option for increased performance.

I bought two of these one for each of my computers. One worked great the other did not appear to be compatible. I liked the product. It seemed to have pretty good quality for the price. The one that worked, worked real well in my netbook and it resulted in improved performance. The computer booted noticeably faster with 2GB of memory instead of the 1GB that it came with. I recommend upgrading the memory. For the small price, it was cheaper than getting a new computer. Now the computer will be better able to upgrade to Windows 7 with 2GB of memory instead of the minimum recommended 1GB.

Not a lot to review here...this was the memory that I needed to upgrade my laptop from 3 GB to 4 GB. For those of you who don't know, this is RAM and if you max out the capacity of your PC or Laptop, you can speed it up. This is the cheapest way to upgrade a computer and delay buying a new one.There is a free utility program out there called SIW, that when you run it on your computer, will tell you everything about your system, including the memory. It will detail how many slots you have, and how much you have installed in each slot.For example, my laptop had 2 slots, that would hold 2 GB each. One slot had 2 GB, and the other slot had 1 GB. This meant I could remove the 1 GB card and install a second 2 GB card to max out my system, and give it a little more processing speed.OH!...When you do a Google search for SIW, because it is very popular and very useful, everyone and their cousin has taken it and coupled it with a downloader program or toolbar or some such nonsense. Some have even set up viruses to be associated with it, so make sure your anti-virus is updated and turned on before you start to download anything, so that it can help protect you by warning you when you try to go to an infected site. Whatever you do, don't use a downloader or toolbar. They simply act as ad-ware with pop-up ads, and use up memory (that you are trying to upgrade!). The original author of the program offers it as a paid program now too. It's actually worth it if you don't want to dig to find a free copy. The program will also tell you what type of memory you have/need for your system plus a lot more.It's very simple to replace the memory card. Turn off your laptop (a FULL shutdown, not sleep mode), unplug it, and REMOVE the battery.Look for a panel on a laptop that indicates memory and unscrew the panel.The memory cards will have some sort of "latch" holding them tight. Undo this and remove the card, or simply insert the card into an empty slot and ensure it is "latched" down.(Note, the cards will have a notch that prevents you from installing a desktop card into a laptop and vice versa. If the card doesn't fit, you have the wrong type for your device. The pin numbers are different. Desktop has usually 240 pin, laptop has 200 pins. There are some variations, so double check your needs. Also, make sure your card is right side up too!)Replace the cover, battery and/or cord, and reboot your computer. You computer will automatically pick up the new card and start using it. If you want, you can re-run SIW to double check the card is working.I only gave 4 stars because, well, it's just memory, and nothing amazing happened when I upgraded. It's a commodity. But it's fine, so if you need it, buy this! :)

Bought 2 to upgrade my iMac 2007 model to the maximum of 4 GB. Worked so well it accelerated the death of my 750 GB Hitachi internal hard drive (it was 8 years old though) after just 1 day of use. So after getting a new hard drive installed, then installing all the OS X from Leopard on and finally using Time Machine to insert my stuff back, it works great. It is a wee bit faster than before and it is now a new computer thanks to the new 4 GB of RAM and a new internal hard drive. Glad the computer didn't blow up due to the new RAM (LOL). I can use it.

I replaced the RAM on my iMac (vintage 2007) with two, 2 GIG cards from CalvinNHobbs. I was surprised to find such a low price. The better known online memory stores were charging two to three times as much. The iMac, which had slowed considerably apparently because of RAM issues, worked at normal speed after I installed the new RAM. After ordering, I submitted two questions to CalvinNHobbs regarding shipping. Both questions were answered clearly within hours of being submitted. I would definitely recommend this vendor.

This DRAM module did NOT work in my application. It was sold by XtremeRAM and fulfilled by Amazon.The SODIMM had the silkscreen on the memory chips crossed out, exactly the same location on every chip, so I believe that it was done at the chip level (probably by Micron). I uploaded an image that shows this. I am not sure what this means, but it sure does not give me a warm and fuzzy.I returned the item, I had to PAY return Shipping!!! I do not suggest this.

It was low priced and worked for my needs

Bought to upgrade niece's HP 2133 Netbook from OEM 1GB to 2GB. Netbook has only single DIMM slot, removal of old & installation of this new 2GB was easy (I even found a YouTube video showing how to do it). My Amazon order 2/6/14 was fulfilled by CalvinNHobbs, I received the DIMM via USPS on 2/8/14. Only comment: When ordered, stated delivery ETA was 2/13-March xx (very odd), but reality was shipped same day. Thanks CalvinNHobbs.