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Windows 7: Show us your SSD performance 2

23 Aug 2012   #491
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Apparently some people can't comprehend an article. There will be no writes to a page if any of the blocks therein contain data. The SSD won't erase, then write to it, your are describing TRIM.
Outta here.


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24 Aug 2012   #492
chrysalis

windows 8.1 Pro x64
 
 

I think you have misunderstood TRIM, multiple articles say the same thing even the wiki one you linked to.

It notifies the drive where invalid data is, thats it, nothing more. TRIM doesnt do any erasing. Its GC that does that.
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24 Aug 2012   #493
Hopalong X

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

Okay it deletes it. Semantics.

Third section down the page.> TRIM - Wikipedia, the free encyclopedia

Quote:
Operation
The TRIM command is designed to enable the operating system to notify the SSD of which pages of data are now invalid due to erases by the user or operating system itself. During a delete operation the OS will not only mark the sectors as free for new data, but it will also send a TRIM command to the SSD with the associated LBAs to be marked as no longer valid. After that point the SSD knows not to relocate the data from those LBAs during garbage collection. This will result in fewer writes to the flash, reducing write amplification and increasing drive life. Different SSDs will act on the TRIM command somewhat differently so the final performance can also be different between different SSDs.
The command irreversibly deletes the data it affects.
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24 Aug 2012   #494
Hopalong X

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

I haven't updated this in a long time. Xtremeforums SSD endurance testing.

Samsung 830 is the champ so far. Post #5104 last update.> SSD Write Endurance 25nm Vs 34nm - Page 205

(GiB) 3,718,760
(TiB) 3,631
(PiB) 3.57
---------------------------------------------------------------------------------------------------------------------

For those that followed my earlier posts.
The Kingston 40MB (Intel X25-V rebranded) has topped 1PiB as of August 7, 2012.
It is one of the original SSD's and has been running since May 16, 2011.
I don't have the most recent write total.

It sure isn't the fastest but just keeps on working.
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24 Aug 2012   #495
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Interesting thread Mike.
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24 Aug 2012   #496
essenbe

Windows 7 Enterprise X64/Windows 10 Enterprise X64/Windows 10 Pro X64/Linux Mint
 
 

Quote   Quote: Originally Posted by Vipermk2 View Post
I have moved it from the 6gb Marvel ports to one of the 6Gb Intel ports and it has definitely improved, however it is difficult to tell which one comes out best as each fair better than the other depending on which benchmark I use
As an OS drive, you primarially use the 4KB read stats. Both benchmarks show the Intel controller faster on the 4KB read speeds.
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26 Aug 2012   #497
chrysalis

windows 8.1 Pro x64
 
 

Quote   Quote: Originally Posted by Hopalong X View Post
Okay it deletes it. Semantics.

Third section down the page.> TRIM - Wikipedia, the free encyclopedia

Quote:
Operation
The TRIM command is designed to enable the operating system to notify the SSD of which pages of data are now invalid due to erases by the user or operating system itself. During a delete operation the OS will not only mark the sectors as free for new data, but it will also send a TRIM command to the SSD with the associated LBAs to be marked as no longer valid. After that point the SSD knows not to relocate the data from those LBAs during garbage collection. This will result in fewer writes to the flash, reducing write amplification and increasing drive life. Different SSDs will act on the TRIM command somewhat differently so the final performance can also be different between different SSDs.
The command irreversibly deletes the data it affects.
That last line is misleading. what it means is because TRIM is going to mean deleted files are actually going to be erased much quicker than without TRIM then deleted files are unlikely to be recoverable. The bit you pasted clearly states that TRIM is telling the drive where deleted files so during GC they can be deleted, it doesnt say TRIM itself actually erases the files. We going to have to agree to disagree if we never going to agree with each other, to me it seems very clear tho.

TRIM = SSD knows where deleted files are and can erase before the pages are needed again for writes.
NO TRIM = SSD doesnt know where deleted files are until the OS tells it to overwrite those pages with new data. However manual trimming would still work in maintaining the SSD inactive pages.
My System SpecsSystem Spec
26 Aug 2012   #498
chrysalis

windows 8.1 Pro x64
 
 

Quote   Quote: Originally Posted by Hopalong X View Post
I haven't updated this in a long time. Xtremeforums SSD endurance testing.

Samsung 830 is the champ so far. Post #5104 last update.> SSD Write Endurance 25nm Vs 34nm - Page 205

(GiB) 3,718,760
(TiB) 3,631
(PiB) 3.57
---------------------------------------------------------------------------------------------------------------------

For those that followed my earlier posts.
The Kingston 40MB (Intel X25-V rebranded) has topped 1PiB as of August 7, 2012.
It is one of the original SSD's and has been running since May 16, 2011.
I don't have the most recent write total.

It sure isn't the fastest but just keeps on working.

any thoughts on why the samsung 830 is doing so well with its apparent high write amplification which should increase wear? and sandforce doing poorly on the same tests with its compression decreasing wear?
My System SpecsSystem Spec
26 Aug 2012   #499
kbrady1979

Windows 7 Professional 64bit SP1
 
 

Quote   Quote: Originally Posted by chrysalis View Post
Quote   Quote: Originally Posted by Hopalong X View Post
I haven't updated this in a long time. Xtremeforums SSD endurance testing.

Samsung 830 is the champ so far. Post #5104 last update.> SSD Write Endurance 25nm Vs 34nm - Page 205

(GiB) 3,718,760
(TiB) 3,631
(PiB) 3.57
---------------------------------------------------------------------------------------------------------------------

For those that followed my earlier posts.
The Kingston 40MB (Intel X25-V rebranded) has topped 1PiB as of August 7, 2012.
It is one of the original SSD's and has been running since May 16, 2011.
I don't have the most recent write total.

It sure isn't the fastest but just keeps on working.

any thoughts on why the samsung 830 is doing so well with its apparent high write amplification which should increase wear? and sandforce doing poorly on the same tests with its compression decreasing wear?
Samsung makes everything in their SSD's, and they hand pick the components that go into them. They make the controller, as well as the firmware. It's no surprise these drives work as good as they do......it's Samsung
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28 Aug 2012   #500
Dave76

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
 
 

Sandforce drives aren't doing too well because if you write too much in a short period of time the firmware will slow down the drive to keep you from writing so much.

AFAIK Sandforce is the only one doing that, other brands let you decide what you want to do.
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