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Windows 7: Show us your SSD performance

08 Jun 2011   #1741
essenbe

Windows 10 Pro/ Windows 10 Pro Insider
 
 

Quote   Quote: Originally Posted by whs View Post
Quote   Quote: Originally Posted by Miranova23 View Post
Hey, I've been wondering now just how good this SSD actually is. Glad I found the tests to run here

OCZ Vertex2 3.5" 120GB SSD
The transfer rate should be above 200MB/sec and the access time should be 0.1ms. But I had the same problem with HD Tune - the Vertex2 results were all wrong whilst the Intel results were OK. Atto is a better measuring tool.
OCZ tech support only accept ATTO results. Of course, they give the best results for Vertex2.


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08 Jun 2011   #1742
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

The thing is that I get very similar HD Tune and Atto results on my Intels. But for the OCZs, HD Tune can be anything. And it is not consistant from run to run.

I just made a quick run on my 3 year old Vertex in this system (which is a Dell). It came out relatively well - given that this is a very old Vertex. But in the next run it may be different.


Attached Thumbnails
Show us your SSD performance-2011-06-08_1919.png  
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08 Jun 2011   #1743
essenbe

Windows 10 Pro/ Windows 10 Pro Insider
 
 

I know WHS, I have the same issue. OCZ forums had a thread that said it is how the tests are done. I really am not technical enough to keep up eith what they were saying. but it had to do with compressible testing vs I/O reads and non comressible tests.
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08 Jun 2011   #1744
essenbe

Windows 10 Pro/ Windows 10 Pro Insider
 
 

Whs, also on another issue you may find interesting. I was reading on secure erase, and it was said that a secure erase on Vertex SSDs did not actually erase anything. The vertex encodes and compresses the data you write to the SSD. A secure erase simply changes the encoding key thus making the previously written info unreadable.
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08 Jun 2011   #1745
Cr00zng

Windows 7 64-bit, Windows 8.1 64-bit, OSX El Capitan, Windows 10 (VMware)
 
 

Quote   Quote: Originally Posted by essenbe View Post
Whs, also on another issue you may find interesting. I was reading on secure erase, and it was said that a secure erase on Vertex SSDs did not actually erase anything. The vertex encodes and compresses the data you write to the SSD. A secure erase simply changes the encoding key thus making the previously written info unreadable.
Depending on the type of encoding, that would be a OK just to delete the key; it's pretty similar to what the self-encrypting drives do. The probable difference is that the hardware based FDE utilizes AES encryption while the Vertex SSD encoding is unknown. At least it is unknown to me...
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08 Jun 2011   #1746
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Quote   Quote: Originally Posted by essenbe View Post
Whs, also on another issue you may find interesting. I was reading on secure erase, and it was said that a secure erase on Vertex SSDs did not actually erase anything. The vertex encodes and compresses the data you write to the SSD. A secure erase simply changes the encoding key thus making the previously written info unreadable.
Yeah, I have seen that too. But unless you know the key, you can still not get at the data.
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08 Jun 2011   #1747
Hopalong X

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit
 
 

Sounds like a job for Diskpart "clean all" or software to write 0's to actually clear the drive.

Good to know.
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08 Jun 2011   #1748
tw33k

Windows 7 Ultimate (x64) SP1
 
 

We all now know that the TRIM command is not passed on if using the Marvell controller. One way I found to clear the free space on my C300 was to use Ccleaner's wipe free space function. Under Options and Settings make sure "Wipe MFT Free Space" is checked (I use the Normal mode). Then click "Cleaner" and right down the bottom click "Wipe Free Space" It took about 12 minutes for 80GB on mine. It's best to let your PC idle for a few minutes after it's finished
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08 Jun 2011   #1749
Miranova23

Windows 7 Pro x64 SP1
 
 

I just used HD Tune cuz of the 2 that the op, Nate42nd, suggested, only 1 was in English. Here's Atto. & then as recommended, I won't be testing my SSD again for a while unless need be.

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08 Jun 2011   #1750
Cr00zng

Windows 7 64-bit, Windows 8.1 64-bit, OSX El Capitan, Windows 10 (VMware)
 
 

Well, evidently the OCZ Vertex SSDs utilize AES 128 and/or 256 bit encryption, as indicated at this site, quote:

Quote:
DuraWrite is the name SandForce gives this black box of compression mojo, and the company has been reluctant to give us a closer look inside. We suspect there's an element of encryption involved, since SandForce controllers offer on-the-fly AES encryption that can't be disabled. The latest SF-2000 series support 256-bit AES encryption, which is a nice upgrade over the 128 bits of protection offered by the SF-1000 family.
The drive is also Opal SSC compliant, which means that one could control access to the drive via software that can manage self encrypting drives. That's neat and takes no time to provision access to and/or decommission the drive...

Here's a link for what DuraWrite does that has more information that you'd need...
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