> 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. You also don't get the CPU having to handle each command itself and poke the drive which causes signficiant stalls (doubly so because Jeff Garzik hasn't applied my patches to fix the bogus ones yet ;)) So not only do you get 64bit DMA and NCQ but the inter command delay is lower so its faster overall. You also get less CPU stalls for I/O which can be very slow with legacy mode although it usually only upsets real time people. Alan -- 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
