Speed problem ssd

Hello,

I've bought the intel 335 240 gb ssd.
I've got an alienware m17xr4 :
i7 3630qm - amd 7970m - 14gb ram
When i copy a file of 12 gb from deskop to user folder in the same ssd, the copy begins with 485 mb/s and after 4 seconds it drops to 130 mb/s.

Is my ssd faulty?

I'm in ahci mode.

Thanks a lot

 

It might be normal.

EDIT : it looks like the intel 335 240 gb ssd has an sandforce controller that compresses the data to increase the transfer rate, if the file you are copyig is already compresses like a video or a zip file, your transfer speed will be a lot slower.

performance - SSD Copy gets slower and slower with large files - Super User

John.

 

Yeah, sounds about right (OP'ing would help, I would think).

Just to be sure: you have 16GB RAM - not 14GB, right?

 

nope i have 14 gb :
8 gb gskill 1866
4 gb hyundai 12800
2 gb nanya 12800

So it is normal that the speed drops like that?

 

Thanks for the RAM: (duh! 4 SoDimm slots...).


I would not call this normal - but depending on how your notebook and O/S (type) is configured, it may be the best you can hope for.

For example, my slow as molasses (in benchmarks vs. current SSD's ) Crucial M4 512GB (OP'd by ~30%; i.e. ~143GB left as 'unallocated') can usually hit 600MB/s+ when copying a 3GB file from one folder to another. This is a Win8x64 Pro setup with 16GB RAM, pagefile disabled, error reporting disabled, system restore disabled, hibernation disabled (just saved ~50GB SSD space right there...) and Intel RST v12.9 installed (yes; the IRST driver makes a difference). When it doesn't hit over 600MB/s - I'm kind of disappointed that it seems so slow at around 300MB/s speed.


In your situation, what are (and how are) the above important parameters setup?

Possibly by simply OP'ing (if you have the free space available) you will greatly increase the copy speeds.

As mentioned above though; an already compressed file will be slower on a SF drive because it will try to compress it again.


To OP an existing setup, try these steps:


http://forum.notebookreview.com/sol...marks-brands-news-advice-213.html#post9283303


Benefits of OP'ing:

See:
http://forum.notebookreview.com/sol...marks-brands-news-advice-214.html#post9317068

 

i've done everything for the optimization of the drive exept the OP. i'm a bit disapointed . At least if i got 200 mb/s i'll be happy lol. Because i move a lot of file. for exemple a video file .mkv of 10 gb

 

What optimization specifically? Was this a clean install (Win8x64)? Are the partitions aligned?

 

pagefile disabled, error reporting disabled, system restore disabled, hibernation disabled, prefetch and superfetch disbled aswell.
Yup, it's a clean install of win 8.1 x64. and my ssd is aligned

 

Hi

Use the app below to benchmark your ssd, the seq read/write speed is what we are looking for.

CrystalDiskMark - Software - Crystal Dew World

Also what does the transfer mode show, use the app below, it should says SATA300 or SATA600

CrystalDiskMark - Software - Crystal Dew World

John.

 

You went to far with your optimizations... PreFetch and SuperFetch still have benefits even with Win8.1 and an SSD.

Which version of IRST are you using?

 

You did not do this did you

John.

 

i've reactivated the prefetch and superfetch. The version is 12.9.0.1001.
I'm on sata III 6 gb

CrystaldiskMark - Random Disk C: 23% (52/223GB)

Seq : 461.9 (read) - 133.3 (write)
512K: 382.8 (read) - 234.8 (write)
4K: 15.61 (read) - 50.24 (write)
4KQD32: 192.6 (read) - 189.8 (write)

CrystaldiskMark - 0fill

Seq: 492.4 (read) - 486.5 (write)
512K: 413.7 (read) - 452.8 (write)
4K: 16.89 (read) - 46.45 (write)
4KQD32: 213.9 (read) - 362.6 (write)

 

I just tried copying a 13gb file myself and i am only getting 90mb/s , my normal write speed for my ssd is about 430mb/s so i say it must be normal for an internal ssd transfer.

John.

 

Nope it's still enabled

 

Your non compressable data speed 133.3mb/s is the same as your file transfer speed in post 1

John.

 

is it normal for that kind of ssd to be at 133.3 ?
Thanks a lot for all your answers I appreciate
Did you get 90 mb/s constantly or only one drop to 90?

 

133.3mb/s does seem slow for non-compressable data according to the review in the link below, they were getting over 300mb/s , maybe it`s the app they used.

Try looking for other reviews of your ssd.

AnandTech | Intel SSD 335 (240GB) Review

EDIT : try the benchmark from the review.

http://alex-is.de/PHP/fusion/downloads.php?download_id=9

John.

 

i've got this:

 

224mb/s compaired to 317mb/s in the review, have you tried using the latest driver.

Support for the Intel® Rapid Storage Technology (Intel® RST)

John.

 

that's strange because i'm running on the latest RST

 

Copy and paste a 2.67GB Windows 8.1 ISO file from the desktop to the user/downloads folder took about 3 seconds using Windows file copy on a 240GB SandDisk Extreme SSD.

The SSD is about 25% full

Windows 8.1 Pro x64
16GB (4x4GB) Samsung DDR3 1333 9-9-9-24
i7 2670QM
GTX570M
MSI GT780DX(Sandy Bridge HM67)

 

Don't go by what the review shows. They test a new drive, a SE'd drive, not the O/S drive, in safe mode, etc. etc. etc.

 

Thanks à lot for your answers!! I'll try to copy an ISO of 2.67 gigs when I'll be at home! Could you try please to copy a mkv file of 8 gb and tell me what's your copy speed please.

Oh I see if they tested the ssd completely blanked and without the is it is normal that they obtained higher speeds ...

 

Have you tried an "secure erase", i have heard that this can restore performance but it means wipping your ssd, have you checked the Intel ssd toolbox for this function.

http://www.pcworld.com/article/2088341/how-to-restore-your-ssd-to-peak-performance.html

John.

 

A big thanks tinderbox !!! I've done a secure erase with parted magic and my write speed is gone at 320 mb/s (crystaldiskmark and as ssd) !! I'll now install the os and tell you inform about the rest

 

I am very suprised you got such a boost in speed with the secure erase, well done!

John.

 

that's what I got with my OS installed and the drivers without the optimizations of the ssd

 

This is why you shouldn't do SSD optimizations - they were written for a different kind of beast 4+ years ago.

This is why I also suggested;

While SE'ing a drive can bring back lost performance; that is not a long term strategy, imo.

Why not try the 30% OP as suggested to keep as much of this performance as possible over the long term? When the SSD has reached a steady state it will benchmark (and feel) much slower than it is now. In addition, with SF drives; they can be pushed too far and not be able to recover without a drastic step such as SE. Add to these facts that TRIM has always been a problem with SF drives and everything points to OP'ing to keep the performance as much as possible.

See:
AnandTech | Intel SSD 335 (240GB) Review

 

EDIT: I have been reading about over-provisioning and a lot of people are saying it`s not necessary with modern ssd`s

30% over provisioning, if your ssd toolbox supports this, or am right, if you have an single partition on your ssd reduce the size by 30% and leave un-allocated, some ssd`s already have an op space 10% or something, so just created another 20% of un-allocated this seems like an awful waste of precious space.

Does the type of flash memory you have come into this anywhere, SLC or MLC?

John.

 

I ve got an Mlc drive and I've read somewhere that the intel 335 have normally a 256 gb of space but they reduced to 240 to give a 16 gb (7%) of OP is that true?

 

Why do people disable prefetch?

 

It`s supposed to reduce wear on ssd, I followed the guide below, i also stopped firefox from storing it`s cache and temp files on the ssd, and now it just uses the ram memory.

Solid State Drive (SSD) Tweaks for Windows 7

John.

 

Is the wear of prefetch really that significant, prefetch files aren't very big? IIRC MS said it was done not because of wear but because they considered at the time access times of SSD's were sufficiently fast without it. Something which I find debatable.

 

Most likely none of the life extending tweaks are really necessary, your ssd will work fine for a few years regardless, if your ssd has mlc flash chips which have a shorter lifespan that the slc version, it might be worth doing, the choice is yours, i like to mess about with my computers so i will try everything once.

Also my SSD is second-hand as i could not afford a new one of the size i wanted, so i would like to make it last as long as possible.

John.

 

Thanks à lot to everybody for your help and explanations !
I've got one more question lol : what does that the Trim really means!
I've got an option (ssd optimiser) in ssd toolbox of intel.
Should I do that or it's better to avoid?

 

Windows 7 and 8 have trim support built-in so you dont have to run trim yourself, when you delete a file on an ssd the trim zero`s out the file, it has to do this before it can write new data to that area of the ssd, an mechanical hdd does not have to do this.

You can use trimcheck in the link below, the first time you run the program it will create a file on your ssd and then it will delete. you then wait 10 seconds and then run the program again, this time it will check to see if the file has been zero`ed out, if it has the trim is working.

Index of /trimcheck

John.

 

Damn if I only knew that earlier i would never had bought that ssd.

Thanks Tinderbox. In my case: yeah! the Trim is working

 

It doesn't "zero out" the file, it unmaps the LBA's. Some may return zero's for those LBA's on subsequent reads or some ones. Zero's are only guaranteed if the SSD reports deterministic return zero after trim. They could, if they wanted, have the unmaped LBA's returned with filled text data saying "This area has been trimmed".

Should I mention the "superpage" again? didn't go down too well the last time I did lol.

 

I suppose you have the latest firmware as Intel might have fixed the degradation problem, as that review is dated "October 29, 2012"

https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=18363

John.

 

I've no issues with trim functioning on any of my 3 SSDs with SandForce 2280 controllers and latest firmware

Firmwares have garbage collection algorithms

TRIM is a command to speed up the identification process and GC does all the work.

Write amplification - Wikipedia, the free encyclopedia

There's also a little app you can try called ForceTrim
ForceTrim

SanDisk Extreme 240GB w/SandForce 2280 TrimCheck

 

I don't have an 8GB mkv but a 2.32GB mkv of "The Wolverine" took also about 3 seconds.

It copies so fast it's gone in a blink of an eye

 

for me it tooks 5 seconds but the drop of speed appears only with a mkv above 4 gb

 

What's the 8GB mkv you used.

PM me a link.

 

The Lone Ranger 8,479,158 KB mkv took 1'11"using tera copy to copy to a folder.

 

ok for me it tooks 1'05" with teracopy. I think it's normal then