On Thu, Apr 8, 2010 at 8:00 PM, Dâniel Fraga <fragabr@xxxxxxxxx> wrote: > On Thu, 08 Apr 2010 17:54:14 -0600 > Robert Hancock <hancockrwd@xxxxxxxxx> wrote: > >> Depends on a lot of things, and what you mean by "significant". You >> don't get NCQ in legacy mode, and you also don't get 64-bit DMA support, >> which gets more significant the more RAM you have. > > I understand Robert. Ok, by significant I mean "better" and > "faster". > > So there's no NCQ in legacy mode? But you wrote that > regarding just the ICH chipset or all chipsets? Because I remember when > I used the forcedeth driver there was NCQ. Think you meant sata_nv or something there, forcedeth is the network driver :-) In that case that's not really legacy mode though, it's some chipset-specific enhanced mode like SWNCQ or ADMA in the NVIDIA case, or the newer Silicon Image controllers which support the fancy features with an entirely different interface from AHCI. In the case of Intel controllers, though, IDE mode is basically the same as a PATA controller with no real SATA-specific features (NCQ, 64-bit DMA, hotplug, etc.) -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
