Tak jsem si pred necelymi dvema tydny poridil WD 2500KS a jako test rychlosti jsem pouzil HD Tune. Ten ovsem skoncil behem testovani pristupove doby chybovou hlaskou "Read Error". Podle grafu navic mezi 23-27% klesla rychlost z +-55 na 17,5MB/s, neco podobneho u konce disku. Ve Speedfanu mi pise
NOTE : your hard disk has 1678 pending sectors (this value is very large and your hard disk should be replaced). Those are sectors that couldn't be properly read and that the hard disk logic is waiting for a write operation to try to remap to a spare sector (if available). According to the Reallocated Sector Count attribute, your hard disk seems to have available spare sectors. A simple disk surface scan won't be enough to force the remap operation. You need a read/write surface scan to remap the sector. The best option should be a tool that knows about what should be read from that sector so that it has some option to apply the best fix to the missing data.
Tak zkusim format a kdyz to nepomuze, myslite ze je to na reklamaci? U fitness mi to pise 0%, performace 100%.