WD7501AALS slower than WD5000AAKS


#1

WD7501AALS slower than WD5000AAKS

Hi everyone

i ran a few bench for myself out of curiosity

my test setup

ich10r

4xWD7501AALS
4xWD5000AAKS

running raid 5/using 64kb stripe size/30gb partition/windows 7 Premium 64bit/HD Tune 2.55

WD5000AAKS ich10r                                                 WD7501AALS ich10r
  test 1 test 2 test 3                                                      test 1 test 2 test 3
transfer rate
min  32.2 35.6 30.3                                                       7.4 4.4 23.5
max  189.8 190.2 190                                              157.7 161.8 161.6
average  145.1 145.3 152.8                                    124.9 115 129
access time 9.3 9.3 8.7                                             9.7 10.3 9.6
burst  133.4 138.8 138.6                                          134.1 130.6 134.4

WD5000AAKS ich10r with writecache enabled           WD7501AALS ich10r with writecache enabled
  test 1 test 2 test 3                                                                    test 1 test 2 test 3
transfer rate
min  43.9 123.3 114                                                                  19.4 40.3 107.2
max  405.2 407.0 406.6                                                            298.2 296.9 299.9
average  366.2 362.3 367.4                                                     238.4 231.4 238.9
access time 8.2 8.2 8.0                                                             9.7 9.5 10.8
burst  2181.9 2443.8 2230.1                                                   2199.8 2315.8 2195

any comment ?


#2

I don’t use RAID but had both models and the WD5000AAKS topped in speed, googled for some information about that issue and people are having the same problem, it seems the AAKS is better, at least in my experience and time using it. I ended buying another AAKS.