Replacing the slow, mechanical 5400 RPM hard drive with a standard 2.5-inch SATA Solid State Drive (SSD) will dramatically decrease boot times and make application launching feel instantaneous.
Most PCG-31311M units came with a 1.8-inch ZIF HDD spinning at 4200 RPM. This makes the boot time over 2 minutes and opening any app a test of patience. (If you find an SSD version, buy it). Sony Vaio Pcg-31311m Specs
The mainboard possesses two SO-DIMM slots supporting DDR3 memory modules running at speeds up to 1333 MHz. Officially, Sony capped the maximum memory specification at 4 GB , though some user deployments report the chipset accepting up to 8 GB configurations via matched low-density modules. Replacing the slow, mechanical 5400 RPM hard drive
11.6-inch TFT WXGA color display with energy-efficient LED backlighting Replacing the slow
