UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems.
HDDScan is a Free test tool for hard disk drives, USB flash, RAID volumes and SSD drives. The utility can check your disk for bad blocks in various test ... HDD from inside · Blog · Data Recovery Guide · Tracks and Zones
Use dd command to monitor the reading and writing performance of a disk device. The dd command is useful to find out simple sequential I/O performance.