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Any diff in HD performance using chipset SATA ports vs. additional onboard SATA?

MichaelD

MichaelD

Lifer
My motherboard has 4 SATA ports via the ICH8 southbridge. It has an additional 2 SATA ports via the onboard JMicron controller (which is connected to the SB).

Would I see any performance diff b/t the two controllers, assuming two identical HDs, one on each controller?

The board in question is a Gigabyte DS3; there's no mention of this question in the official thread, btw.

The JMicron controls the additional two SATA ports as well as the IDE channel (I have two burners on the IDE channel)

The ICH8 SB controls...well, everything else on the board, pretty much.

I plan on having one HD for all my partitions (system/games/data) and the other HD as a scratch disk for video/photo editing. That should speed things up nicely.

So, would I see a diff b/t the two controllers? Thanks. 🙂
 
The performace difference is negligible.

That said, IIRC using the dedicated controller might result in less CPU usage, but lower transfer rate. Not that youd notice it.
 
Originally posted by: Tlkki
The performace difference is negligible.

That said, IIRC using the dedicated controller might result in less CPU usage, but lower transfer rate. Not that youd notice it.
Click to expand...

Depends on the controller you use and the connection type it uses. The PCI-E controllers have plenty of bandwidth and the better controllers will blow away the performance that the integrated controllers offer, but you won't usually see that unless you start using RAID.
 
Thanks much guys. So basically, the performance will be negligible b/t the two. OK.

What about having one drive on each controller then, instead of both drives on either one?
 
If you boot off the JMC and transfer your disk to another machine it will no longer boot whereas the INTC should. (unless configured SATA RAID or SATA AHCI)

Those JMicron hosts aren't particularly great either.
 
Thanks, MS Dawn.

If booting off a single HD, why would a HD connected to the JMC (I'm assuming the OS was loaded while the drive was attached) not work in another machine?

A raid array, sure, I understand that, but why not a single disc? A drive w/an OS is a drive with an/OS.

 
You would have to use the F6 installation with repair option to get it back up UNLESS the drive was mounted as an IDE device through Windows. You know this message:

STOP: INACCESSIBLE BOOT DEVICE
 
Originally posted by: MS Dawn
You would have to use the F6 installation with repair option to get it back up UNLESS the drive was mounted as an IDE device through Windows. You know this message:

STOP: INACCESSIBLE BOOT DEVICE
Click to expand...

Ah yes; I know that message all too well. 😱

Got it. I'll stay away from the JMC. Thanks much!
 
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