Speed difference going from AHCI to IDE

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mjf

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I had some reason for moving from Sata mode AHCI to IDE (Reason in this thread)
Most material I read didn't have any compelling speed disadvantage so I did some informal speed tests. Results for those interested (This not an SSD):
CrystalDiskMark speed tests don't show any significant difference.
The first row is a sequential 1GB R/W test. Next rows are various random R/W tests.

ahci speed.JPGide speed.JPG

A four thread unindexed search for a text string in
1,164 pdfs (1.7GB)
from 253,302 files (173GB)
Took: 2min 12 secs for AHCI and 2min 5 secs for IDE
ARsearch.jpg

Informal conclusion: No significant speed difference.

Add: In addition to specs listed. Seagate 1TB (ST31000528AS), AMI BIOS.
 
Last edited:

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Compelling indeed. Do you think the resuts might be different for varying brands of SSD?
 

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Gigabyte P55A-UD3R Rev.1. Award BIOS F13
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1*Samsung 840 EVO 120GB SSD;
1*OCZ Vertex 2 60GB SSD;
2*Samsung F3 SpinPoint 1TB in RAID0;
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i think the AHCI advantage is for ssd's drives.
 

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win 7 ( 64 bit)
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ASUS P7P55 LX LGA 1156
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My Computer

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Golden Mk. I.4
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Windows 10 Pro x64 ; Xubuntu x64
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Intel i7 860 @ 2.80 GHz O/C'ed to 4.0GHz
Motherboard
Gigabyte P55A-UD3R Rev.1. Award BIOS F13
Memory
16GB Corsair Vengance DDR3 @ 661 MHz Dual Channel (9-9-9-24)
Graphics Card(s)
EVGA NVidia GTX 560 1024MB
Sound Card
Realtek Integrated
Monitor(s) Displays
Dual Samsung SyncMaster 2494HS
Screen Resolution
1920*1080 and 1920*1080
Hard Drives
1*Samsung 840 EVO 120GB SSD;
1*OCZ Vertex 2 60GB SSD;
2*Samsung F3 SpinPoint 1TB in RAID0;
1*Samsung F1 SpinPoint 1TB;
2*Western Digital 1TB External USB 3.0
1*Western Digital 500GB External USB 3.0
1*Seagate 500GB External USB 2.0
PSU
Thermaltake ToughPower QFan 750W
Case
Thermaltake Element S VK60001W2Z
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Corsair H60 Water Cooling, 2*230mm and 2*80mm case fans
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Logitech G110
Mouse
Logitech MX518

My Computer

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Custom built by me.
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Windows 10 Pro
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Intel Core i7-4770K (3.5Ghz)
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Gigabyte G1 Sniper 5 (F10 Bios)
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32 gig Corsair Dominator Platinum (4x8Gig)
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Sapphire Tri-X R9 Fury
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Soundblaster ZXR
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NEC PA242W 24" LCD Monitor
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1920 x 1200
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Primary - Samsung 850 Pro (512gig), Samsung 840 Pro (256gig), 2TB WD Caviar Black.
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EVGA Supernova 1000 G2
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Cooler Master HAF X
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Corsair H100i with Corsair Air Series SP120 Quiet Fans
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Logitech Wireless Wave
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Logitech Performance MX
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High Speed Cable
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Norton Security
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IE11
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Memory Timings - 1866MHz @ 9-9-9-27-1T @ 1.5 volts
I was able to run sata mode AHCI enabled in the BIOS after making the msahci registry change and driver change due to my Nvidia nForce board. But no speed improvements for a conventional HDD.
ahci speed2.JPG
But still had a problem with Hirens boot disk running mini XP not recognising the sata drive. Probably due to the Nvidia board.
So I'm staying with the IDE mode setting for now.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Own build
OS
Windows 7x64 Home Premium SP1
CPU
Intel i7 2600k
Motherboard
ASUS P8Z68 Deluxe
Memory
G.Skill Ripjaws (DDR3-1600) 2x4GB
Graphics Card(s)
Nvidia GeForce GTS 450; Intel HD Graphics 3000(GT2+)
Monitor(s) Displays
Dell Ultrasharp IPS panel U2311H, Samsung SyncMaster P2350
Screen Resolution
1920x1080
Hard Drives
Samsung 850 Pro SSD 256GB, Samsung SSD 840 120GB, Seagates 1TB Barracuda ST31000528AS x2
PSU
Seasonic M12II 520W
Case
Lian Li Lancool PC-K60
Cooling
Case: 1x120mm, 3x140mm CPU: Hyper 212+
Keyboard
Logitech MK520 (wireless)
Mouse
Logitech MK520
Internet Speed
6-7 Mbps
Antivirus
Norton Security Premium, Malwarebytes on 2 (MSE on 3rd PC)
Browser
FireFox
Other Info
Audio: Logitech Z523 2.1

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Alienware Aurora ALX R4
OS
Windows 10 Pro (x64)
CPU
Intel Core i7-3930K (3.2GHz - 4.5GHz)
Motherboard
Alienware Aurora-R4 x79
Memory
4x Samsung 4GB PC3-12800 DDR3 (16GB 1600MHz)
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Nvidia Geforce GTX 690
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SteelSeries Siberia Elite
Monitor(s) Displays
Dell UltraSharp U3011
Screen Resolution
2560x1600
Hard Drives
Samsung 850 Pro 256 GB, Seagate 1TB Desktop Hybrid HDD, 2x Western Digital 4TB Green HDD
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875W Some Dell PSU <.<
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Alienware Aurora ALX
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Custom Liquid Cooling (EK CPU & GPU blocks) dual EK 480RAD
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Logitech G710+ Mechanical
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Logitech G700s
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Verizon Fios (50 mbps average)
Other Info
Server: Intel NUC D54250WYK: i5-4250U, 16GB, 256 GB mSATA, Windows Server 2012 R2
I've seen reference to the NCQ and the Wikipedia article represents the depth (or lack of) my knowledge. The last 4 rows in the speed test tables are various size random R/Ws. I might have thought this NCQ effect in terms of performance imrovement would have shown up here?

My BIOS has been previous set to AHCI since I owned the PC (default setting).
It is only that I want to boot to the Hirens (12.0) boot CD/USB using mini XP that I've changed the setting.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Own build
OS
Windows 7x64 Home Premium SP1
CPU
Intel i7 2600k
Motherboard
ASUS P8Z68 Deluxe
Memory
G.Skill Ripjaws (DDR3-1600) 2x4GB
Graphics Card(s)
Nvidia GeForce GTS 450; Intel HD Graphics 3000(GT2+)
Monitor(s) Displays
Dell Ultrasharp IPS panel U2311H, Samsung SyncMaster P2350
Screen Resolution
1920x1080
Hard Drives
Samsung 850 Pro SSD 256GB, Samsung SSD 840 120GB, Seagates 1TB Barracuda ST31000528AS x2
PSU
Seasonic M12II 520W
Case
Lian Li Lancool PC-K60
Cooling
Case: 1x120mm, 3x140mm CPU: Hyper 212+
Keyboard
Logitech MK520 (wireless)
Mouse
Logitech MK520
Internet Speed
6-7 Mbps
Antivirus
Norton Security Premium, Malwarebytes on 2 (MSE on 3rd PC)
Browser
FireFox
Other Info
Audio: Logitech Z523 2.1
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