does anyone have any idea of why there seems to be a limit or bottleneck at 110mb??????????????????
it cant be the drives cos thers next to no peak or troughs as i would expect at start of drive then tailing off, it does drop near end of drive
now dont get me wrong im perfectly happy loading win xp with all programs antivirus and many other things it does when loading in only 10-15 secs (it was ONLY 5 secs with a fresh install of xp!!)
but if im missing out on 15-20mb a sec i wanna know why
That is pretty darn good. There are other factors that play in to performane overhead that is causing this. And you never get double performance, but you are getting good scores.
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I get 112 MB/sec on my 2x74GB Raptor RAID 0 array. That is all I can get, so you are fine. We are just maxed out on the PCI bus. I am using the SI 3112 on my Asus A7N8X Deluxe. I always wondered how much faster these drives could go, if they weren't bottlenecked. Anyways, only route is PCI express that runs at 66 Mhz or 133 Mhz instead of 33 Mhz.
There is already a PCI technology with increased bandwidth. The standards PCI slot is 32bit, 33MHz. This has been increased to 64bit, 66MHz although more advanced PCI-X slots are now 64bit, 133MHz. Boards carrying it are usually server boards though so PCIe is probably the best solution for desktops.