Pros: Works perfect for those who want to max out the 15 inch Early 2011 MacBook Pro. Kingston ValueRAM always works wonderfully in any computer I've ever used it in.

Cons: None

Overall Review: You would be surprised how much RAM a 64 Bit operating system can use up in a short time. There's a huge difference if your running a virtual machine such as Windows 7 on a Mac and it's a 64 Bit as well. With Apple's stock 4GB it was going into hard drive virtual memory and that's extremely slow, especially when your stock hard drive is 5400 RPMs. I highly recommend it if your running a virtual machine, a few apps and web browser at the same time.

Pros: Great older memory for the price.

Overall Review: I still use my Lenovo G50-70 when I don't wanna be on my desktop and I wanted to try out Windows 11 as well, so needed to upgrade from the 6GB I already had and sure enough, no complaints system is responsive, everything I want to run doesn't run out of memory and no problems with the CPU sharing with the integrated graphics.

Pros: Coming from a 5400 RPM HDD on my 2011 MacBook Pro, Samsung's SSD is a huge improvement. It's blazing fast, I reinstalled OS X Mountain Lion in under ten minutes from a SD Card and my boot time is now 9-12 seconds, compared to 25-30 which was still fast. And even better Adobe Illustrator which would chug staring up now only takes 5-6 seconds to start every time. And loading about 500 256kbps .m4a music files on my iPhone took only just under 5 minutes compared to 10 last time I loaded them. For the price and capacity you get, it's a pretty good deal and I'd recommend it to anyone.

Cons: SSD Drives one of these days will be cheaper, other than that no cons.

Overall Review: Here's hoping SSD's will continue to drop in price and improve on capacity and reliability.

Pros: Once spun up,data reading is very fast. Small simple read/write LED. No errors in writing any discs at top 22X Speed.

Cons: Loves to suck watts out of your power supply when spinning at top speed.

Overall Review: These drives are not to bad and thou they take a small time to read all the data once they do,they read it very fast. Only thing thou, be sure you have enough wattage in your power supply, if not it will cause your power supply to kick in overload protection and make you think the drive is dead. But for a cheap drive, it works.