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Omar el bakly
1 Copper

ATA OR AHCI OR Intel smart responce

I have dell inspiron 7520 which its original configuration have only 1 hdd and 1 dvd bay and have no m2 ssd bay on the mother so I decided to switch from the 1 tb hdd to an 2.5 inch ssd to accelerate my os and programs but i can not afford an 1 tb ssd so i decided to go for 240 gb ssd and keep my 1 tb hdd and install it in 2nd hdd cuddy in replacement to the dvd bay so by exploring bios settings i found these 3 choices in serial communications tab and i can not decide what would give the best performance and still be compatible and does not affect my computer reliability as I heard that some of these choice would not fit my configuration and my motherboard

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4 Replies
jphughan
5 Rhenium

RE: ATA OR AHCI OR Intel smart responce

Intel Smart Response is only useful if you have an M.2 SSD installed AND you intend to use it as a caching module for a 2.5" spinning drive, but you would never use a caching module with a 2.5" SSD.  ATA is a legacy option for very old OSes.

AHCI is the best choice for your configuration.  That would be true even if you decided to add a regular M.2 SSD later.

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Omar el bakly
1 Copper

RE: ATA OR AHCI OR Intel smart responce

I do not have an m2 ssd bay on my laptop it exists only on the special edition is ahci safe for my ssd in closing and opening as i heard some people face some unexpected power loss for ssd as result of choosing ahci is it compatible to my system or not

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9 Rhodium

RE: ATA OR AHCI OR Intel smart responce

AHCI is the mode you want for a standard SSD.

ATA mode will slow down the drive appreciably.

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jphughan
5 Rhenium

RE: ATA OR AHCI OR Intel smart responce

Yes, as I said originally, AHCI is the correct setting for a 2.5" SSD.  It does not affect the safety of your data during a power loss.  You are probably thinking of setting like "write cache buffer flushing" that are configured within Windows.

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