To test SSDs in as close to a real life scenario as possible, we install them as a boot drive and install a full operating system, in this case the Windows 7 Ultimate 64-bit. We test in this clean state, fill the drive up with data, then delete it, running through this cycle a few times before testing the drive again to see if there was much difference in the results after subjecting the drive to this usage cycle.

Burst Speed

HD Tach: megabytes per second – bigger is better
Intel Series 510 120GB: 396
Plextor PX-128M2S: 391
Kingston SSDNow 100 V+ 128GB: 242

Sequential read/write performance

ATTO: megabytes per second – bigger is better
Intel Series 510 120GB – Read: 414
Intel Series 510 120GB – Write: 211
Plextor PX-128M2S – Read: 383
Plextor PX-128M2S – Write: 175
Kingston SSDNow 100 V+ 128GB – Read: 232
Kingston SSDNow 100 V+ 128GB – Write: 178

4K random read/write performance

AS SSD: megabytes per second – bigger is better
Kingston SSDNow 100 V+ 128GB – Read: 19.19
Kingston SSDNow 100 V+ 128GB – Write: 37.67
Intel Series 510 120GB – Read: 17.32
Intel Series 510 120GB – Write: 35.30
Plextor PX-128M2S – Read: 16.23
Plextor PX-128M2S – Write: 42.90