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I have an Asus motherboard which comes with both the AMD SB950 chipset (6 SATA ports) and also an ASMedia 1061 storage controller (2 ports).

I also have:

  • 1 SSD drive for Windows
  • 1 HDD for Linux
  • 2 HDDs for storage
  • 1 DVD drive
  • 1 External HDD

That makes 5 storage units. Sometimes (somewhat often) I'll have 4 of them busy doing IO operations at the same time. Right now they're all plugged to the SB950 ports, as I read - and tested - it's faster than the ASMedia controller. However the source benchmark, as well as my testing, only covers the scenario where a single drive is being used.

Would it be advisable to re-plug some of the devices to the ASMedia controller, in order to offload the SB950 chipset?

All of the HD drives are SATA-III 7200 rpm. No RAID is used.

  • I may put the DVD and External HDD on ASMedia as they aren't much benefited from the boost of SB950 anyway. – hkdtam Jun 8 '16 at 5:05
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Most gaming / performance MBs have 2 SATA controllers (like AMD/intel): a primary one usually with 4,6 or 8 SATA ports and a secondary one (like a SI).

The primary ones are faster and have better driver support.

My recommendation is to have all HDDs on the primary one. SSD also, except the case if you have a special SATA port for SSDs like a few recent MBs support. All optical units (CD/DVD/BR) or non-permanent HDDs (like a backup HDD you connect from time to time) should be on the secondary controller.

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