If the pure CPU power remains unchanged, the PC really is boosted by the disappearance of waiting times due to mechanical hard drive and thus also by better occupancy rate of the SATA2 interface (3 Gb / s) the motherboard. The use of the swap file is thus more transparent.
[Important Note]: the SSD was accompanied by a serial number for the cloning software Acronis True Image 2014. However no procedure is described. The archive of the software is to download from the Acronis website. This will require the creation of a user account that will allow Acronis to check your key Crucial 'short' to provide the final a real Acronis activation key 'long'. Knowing that this key only allows access to certain software functions including cloning.
1:30 I have put to dispose of activated software. Be aware that there are free cloning software, but they do not yet support the necessary adaptation partitioning when migrating to a smaller space (my case). There is the unique benefit of True Image. My setup was simple: a hard disk with a single NTFS partition. The transfer took 15 minutes.
For information, Windows does not like to be detected on two disks at once. A disconnect the old drive and a passage through the Microsoft DVD to put the bootloader to-date OS are mandatory if you leave it on a SSD SATA port different from the old drive.
Before installing Acronis True Image 2014, I would advise to ask Windows to generate a restore point so that you can cleanly uninstall post this useless software.
To summarize, the SSD is an ideal and inexpensive solution today to give new life to old PCs equipped (still) a SATA2 / 3 controller. As a bonus it releases the USB port when a USB key was inserted dedicated ReadyBoost become useless.