Summary: This Western Digital is great for a laptop replacement or upgrade. 500gb, full 7,200 RPM, reliable, cheap and power efficient.. You can't ask for much more. You will notice a difference in your laptop's performance if you have a slower drive, and you won't lose battery life either. Its not one of those new hybrid drives, with a large flash cache, or an ssd. However, with the 7200rpm speed, it still competes with the hybrids.
Summary: I just installed this Western Digital hard drive to replace a failing drive. It's a great product, and Western Digital also offered a proprietary version of Acronis for performing hard drive clones and advanced backup functions. I highly recommend this product.
Summary: Good hard drive. Registered product on WD website and 5 year warranty seems valid even on an OEM hard drive. Be sure to write down the serial number prior to installation as it is required for registration.