What's the bottleneck of my computer (file server)?

Q6600 @ 3.0ghz
LSI21320-IS RAID controller (in 32bit PCI slot)
2x 15k rpm Hitachi's (300gb 15k300) in RAID0
Speedtest.net: 30mbit download, 16mbit upload
p35-ds3l

If so, anyone know of a cheap adaptec 29320lpe hba? it's a pcie x1 hba, thus allowing external rates of 250mb/s?
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  1. Your definetly bottlenecked at the RAID controller PCI 32bit is going to be a killer for the bandwidth on those Hitachi's

    Look at a PCI-e x 4 controller to get the bandwidth. Something like this will give you more bandwidth. Im assuming those drives are SAS.
    http://www.adaptec.com/en-US/products/sas_cards/value/SAS-3405/

    The only other things that will slow you down is network connection to other machines and you internet connection.
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