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IDE or AHCI

post #1 of 13
Thread Starter 
Installing windows on another pc and want to know whether IDE is best or ACHI? Using three different drives but don't want to use RAID.
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post #2 of 13
You want AHCI, but you might have to switch to IDE mode for windows installation. Doing this will allow you to install without any issues or having to load any drivers. After the install you can switch
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post #3 of 13
Vista and W7 have native drivers for AHCI.
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Once again...
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post #4 of 13
AHCI I believe is supposed to be better performance, as it takes the most direct path to each block being written... however I believe the performance gain is negligible
post #5 of 13
AHCI also gives you hot plug ability

Reason I mentioned IDE mode for install is I have seen on several builds where it will not see the drives in AHCI mode during install... guess it's a motherboard thing...
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post #6 of 13
Yeah mine did that, so I left it in IDE mode
post #7 of 13
I've tried switching to AHCI from IDE and theres no performance improvement what so ever, infact it even takes longer to boot because of the added stuff getting loaded for the AHCI.
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post #8 of 13
Quote:
Originally Posted by EarlZ View Post
I've tried switching to AHCI from IDE and theres no performance improvement what so ever, infact it even takes longer to boot because of the added stuff getting loaded for the AHCI.
Right, but try to to unplug a drive in IDE mode while the PC loaded up in Windows...
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CPUMotherboardGraphicsRAM
i7 5960X ASUS Rampage V Extreme 2x Nvidia 1080ti SLI 32GB Corsair Dominator DDR4 3400Mhz 
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Cosair 1500Ti CaseLabs M10 
CPUMotherboardGraphicsRAM
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Hard DriveCoolingOSMonitor
Samsung 840 EVO Custom Loop - EK Supreme HF Windows 7 Pro 64-bit Dell 30" + 2 x Dell 24" 
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Sparkle Gold 1200W CM Stacker T01 
CPUMotherboardGraphicsRAM
Phenom II X6 1055T @4.0GHz (308x13) / 3.08GHz NB ASUS Crosshair IV Formula w/EK full coverage block ATI 5870x2 Crossfired @ 950/1250 8GB Corsair Vengeance DDR3 1600 
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Stacker T01 v5.0
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Samsung 850 pro NVMe M.2 Custom EK watercooled loop Windows 10 Pro Triple LG 4K 27" 
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Cosair 1500Ti CaseLabs M10 
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Delidded i7 3770K @ 5Ghz ASUS Maximus V Gene EVGA GTX 670 SLI - Heatkiller Blocks 16GB Corsair Vengeance DDR3 @ 2400Mhz 
Hard DriveCoolingOSMonitor
Samsung 840 EVO Custom Loop - EK Supreme HF Windows 7 Pro 64-bit Dell 30" + 2 x Dell 24" 
PowerCase
Sparkle Gold 1200W CM Stacker T01 
CPUMotherboardGraphicsRAM
Phenom II X6 1055T @4.0GHz (308x13) / 3.08GHz NB ASUS Crosshair IV Formula w/EK full coverage block ATI 5870x2 Crossfired @ 950/1250 8GB Corsair Vengeance DDR3 1600 
Hard DriveCoolingOSMonitor
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post #9 of 13
Is it possible to install windows 7 on IDE mode then switch to AHCI without reinstall? I always got blue screen when I tried to do that. Any reason why?
post #10 of 13
Quote:
Originally Posted by Lxxg View Post
Is it possible to install windows 7 on IDE mode then switch to AHCI without reinstall? I always got blue screen when I tried to do that. Any reason why?
You need to change your registry to make it work.

Windows 7 - AHCI : Enable in Windows 7 / Vista
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