I have an old HP ProBook 6450b, based on an early first gen i5 M450. ... PC3-10600 DDR3 and I'm considering upgrading the hard drive, replacing the 320GB 7200rpm spinner with a SATA2 or 3 SSD.

The ProBook 4520s is a sturdy, stylish business laptop that performs well at work or on the go. Weighing in at just under 6 pounds sans power brick, the new HP ProBook 4520s feels solid and sturdy ...