RIAD-0 with 2x 36gb raptor, no better performance, How come?

Hello people
I have my system in order, running stable and fast.
But now i bought 2x raptor 36gb
I have connected them on my VIA raid controller (not on promise)
I have created a Raid-0 array and set them as boot array
i can choose between different stripe sizes.
I have chosen 64k
now i have installed windows 64 bit with the lates via (beta) raid driver.
everything works fine.
now i install sisoft sandra 2004 prof edititon > and take the test.
But when i look at the test results it is very bad compared with other results sandra gives me of other configurations.
with pcmark 2001 > i have the same HD score> 1500
i do not have the idea my raid is working fast
IS THE VIA BETA 64  RAID DRIVER so slow ??
DID anyone tested the via raid driver 64 ??
anyhow> i think i will install win xp 32 bit again.

i got two raptors in raid 0 array.....but i have it on my promise contorller. boot times are awesome, opening progs are killer fast and video editing has been amazing. as far as games i dont really play any but i do run ALOT graphic intense progs and alot of CAD. i think the raptors help alot out on some things and at other points u wont notice to much of a differene. peace.

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