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Why you should turn to AHCI.

892 Views 4 Replies 4 Participants Last post by  sbrochew
So got my new vertex 2 and heres a few benchies.

1: Installed first, with just a few tweaks done. Non AHCI. 1.29 firmware

Code:

Code:
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -read -drive c -count 1 -iocount 256 -ransiz
e 4096'
> Run Time 00:00:00.59
> Disk  Random 4.0 Read                        15.59 MB/s
> Total Run Time 00:00:01.42

C:\>winsat disk -ran -write -drive c -count 1 -iocount 256 -ransize 4096
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -write -drive c -count 1 -iocount 256 -ransi
ze 4096'
> Run Time 00:00:00.37
> Disk  Random 4.0 Write                       17.40 MB/s
> Total Run Time 00:00:00.95

C:\>winsat disk -seq -read -drive c -count 1 -iocount 256 -seqsize 524288
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-seq -read -drive c -count 1 -iocount 256 -seqsiz
e 524288'
> Run Time 00:00:11.78
> Disk  Sequential 512.0 Read                  184.70 MB/s
> Total Run Time 00:00:12.37

C:\>winsat disk -seq -write -drive c -count 1 -iocount 256 -seqsize 524288
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-seq -write -drive c -count 1 -iocount 256 -seqsi
ze 524288'
> Run Time 00:00:00.84
> Disk  Sequential 512.0 Write                 232.22 MB/s
> Total Run Time 00:00:01.42

C:\>winsat disk -ran -read -drive c -count 1 -iocount 256 -ransize 16384
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -read -drive c -count 1 -iocount 256 -ransiz
e 16384'
> Run Time 00:00:00.38
> Disk  Random 16.0 Read                       52.33 MB/s          6.5
> Total Run Time 00:00:00.95

C:\>winsat disk -ran -write -drive c -count 1 -iocount 256 -ransize 16384
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -write -drive c -count 1 -iocount 256 -ransi
ze 16384'
> Run Time 00:00:00.34
> Disk  Random 16.0 Write                      75.31 MB/s
> Total Run Time 00:00:00.92

C:\>winsat disk -flush -drive c
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-flush -drive c -seq'
> Run Time 00:00:00.98
> Running: Storage Assessment '-flush -drive c -ran'
> Run Time 00:00:01.01
> Average Read Time with Sequential Writes     0.321 ms          7.9
> Latency: 95th Percentile                     0.932 ms          7.9
> Latency: Maximum                             7.230 ms          7.9
> Average Read Time with Random Writes         0.308 ms          7.9
> Total Run Time 00:00:02.59
2: Changed To AHCI : Still 1.29

Code:

Code:
C:\>winsat disk -ran -read -drive c -count 1 -iocount 256 -ransize 4096
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -read -drive c -count 1 -iocount 256 -ransiz
e 4096'
> Run Time 00:00:00.33
> Disk  Random 4.0 Read                        55.61 MB/s
> Total Run Time 00:00:01.87

C:\>winsat disk -ran -write -drive c -count 1 -iocount 256 -ransize 4096
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -write -drive c -count 1 -iocount 256 -ransi
ze 4096'
> Run Time 00:00:00.33
> Disk  Random 4.0 Write                       93.11 MB/s
> Total Run Time 00:00:00.94

C:\>winsat disk -seq -read -drive c -count 1 -iocount 256 -seqsize 524288
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-seq -read -drive c -count 1 -iocount 256 -seqsiz
e 524288'
> Run Time 00:00:10.11
> Disk  Sequential 512.0 Read                  240.43 MB/s
> Total Run Time 00:00:10.73

C:\>winsat disk -seq -write -drive c -count 1 -iocount 256 -seqsize 524288
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-seq -write -drive c -count 1 -iocount 256 -seqsi
ze 524288'
> Run Time 00:00:00.86
> Disk  Sequential 512.0 Write                 265.33 MB/s
> Total Run Time 00:00:01.47

C:\>winsat disk -ran -read -drive c -count 1 -iocount 256 -ransize 16384
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -read -drive c -count 1 -iocount 256 -ransiz
e 16384'
> Run Time 00:00:00.28
> Disk  Random 16.0 Read                       132.18 MB/s          7.3
> Total Run Time 00:00:00.86

C:\>winsat disk -ran -write -drive c -count 1 -iocount 256 -ransize 16384
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -write -drive c -count 1 -iocount 256 -ransi
ze 16384'
> Run Time 00:00:00.30
> Disk  Random 16.0 Write                      171.48 MB/s
> Total Run Time 00:00:00.90

C:\>winsat disk -flush -drive c
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-flush -drive c -seq'
> Run Time 00:00:01.08
> Running: Storage Assessment '-flush -drive c -ran'
> Run Time 00:00:01.08
> Average Read Time with Sequential Writes     0.376 ms          7.9
> Latency: 95th Percentile                     1.033 ms          7.9
> Latency: Maximum                             45.394 ms          7.9
> Average Read Time with Random Writes         0.318 ms          7.9
> Total Run Time 00:00:02.73
3. Updated firmware to 1.31

Code:

Code:
C:\>winsat disk -ran -read -drive c -count 1 -iocount 256 -ransize 4096
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -read -drive c -count 1 -iocount 256 -ransiz
e 4096'
> Run Time 00:00:00.31
> Disk  Random 4.0 Read                        53.67 MB/s
> Total Run Time 00:00:01.90

C:\>winsat disk -ran -write -drive c -count 1 -iocount 256 -ransize 4096
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -write -drive c -count 1 -iocount 256 -ransi
ze 4096'
> Run Time 00:00:00.31
> Disk  Random 4.0 Write                       26.15 MB/s
> Total Run Time 00:00:00.92

C:\>winsat disk -seq -read -drive c -count 1 -iocount 256 -seqsize 524288
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-seq -read -drive c -count 1 -iocount 256 -seqsiz
e 524288'
> Run Time 00:00:09.64
> Disk  Sequential 512.0 Read                  251.65 MB/s
> Total Run Time 00:00:10.23

C:\>winsat disk -seq -write -drive c -count 1 -iocount 256 -seqsize 524288
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-seq -write -drive c -count 1 -iocount 256 -seqsi
ze 524288'
> Run Time 00:00:00.86
> Disk  Sequential 512.0 Write                 260.38 MB/s
> Total Run Time 00:00:01.45

C:\>winsat disk -ran -read -drive c -count 1 -iocount 256 -ransize 16384
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -read -drive c -count 1 -iocount 256 -ransiz
e 16384'
> Run Time 00:00:00.30
> Disk  Random 16.0 Read                       153.32 MB/s          7.5
> Total Run Time 00:00:00.89

C:\>winsat disk -ran -write -drive c -count 1 -iocount 256 -ransize 16384
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-ran -write -drive c -count 1 -iocount 256 -ransi
ze 16384'
> Run Time 00:00:00.31
> Disk  Random 16.0 Write                      120.80 MB/s
> Total Run Time 00:00:00.90

C:\>winsat disk -flush -drive c
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: Storage Assessment '-flush -drive c -seq'
> Run Time 00:00:01.03
> Running: Storage Assessment '-flush -drive c -ran'
> Run Time 00:00:01.03
> Average Read Time with Sequential Writes     0.311 ms          7.9
> Latency: 95th Percentile                     0.800 ms          7.9
> Latency: Maximum                             41.322 ms          7.9
> Average Read Time with Random Writes         0.280 ms          7.9
> Total Run Time 00:00:02.65
Clearly AHCI is needed to utilize the max powers.

I guess next step is adding intel not ms drivers.
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1 - 5 of 5 Posts
AHCI facilitates actual use of SATA features (hot plugging, etc).

On mechanical hard drives you would get NCQ.
On SSD's you would be able to utilize TRIM if your device & OS also support it.
It wasn't really a question, rather a statement.
And the benches show just how faster it is.
I agree that AHCI is the way to go. I just purchased a Samsung 470 Series 128GB SSD for my Sony Vaio VPCF115FM laptop. I am having a very hard time figuring out how to change to AHCI. I enter the BIOS screen using F2 from start-up and there is nothing in the BIOS to change. Is there another way to change to AHCI?

I have a feeling Sony has it set up so I cannot change it. That would be crazy though. Can anyone help?
1 - 5 of 5 Posts
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