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Windows 7: What is actual SATA tranfer rate real world???

25 Nov 2010   #1
Darryl Licht

Windows 7 Ultimate 64 bit Steve Ballmer Signature Edition
 
 
What is actual SATA tranfer rate real world???

Just to make sure... this is a question regarding SATA 2.0 mechanical HDD Transfer rates. My intention is to build a list or database of actual, real world, transfer rates for mechanical SATA drives. No need to post your SSD transfer rates here.

What should a user expect transfer-wise when performing a local internal disc to disc copy on a large file, or say like when performing a backup via image?

Theoretically SATA 2.0 is good to 3Gbps... but we know that doesn't happen!
  • What differences should you see with different levels of disc cache?
  • What actual transfer rates do you get with SATA 2.0???
  • What are you doing or using while testing?
  • Please post your SATA 2.0 transfer rates, or comments on them.. here!
  • Also, please post whether you are running your SATA drives in IDE or AHCI mode?



My System SpecsSystem Spec
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25 Nov 2010   #2
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

Happy to help Darryl. Can you suggest the best way to measure the transfer rate?
My System SpecsSystem Spec
25 Nov 2010   #3
Darryl Licht

Windows 7 Ultimate 64 bit Steve Ballmer Signature Edition
 
 

Some use HD Tune HD Tune website
Measures transfer rate (min, max and avg), access time, and burst rate.

Some use HD Speed HD_Speed - www.SteelBytes.com
Measures sustained and burst rates.

Some HD Tach HdTach
Measures read speed and burst rate.

I get drastically different results using each one. These tools just simulate and measure access times mostly I believe, they are not real world speed if you use other techniques like below...

Some apps will show you an average when finished as does Macrium Reflect backup imaging app.

Some, like myself, just copy a large file and measure how long it takes then resort to math! LOL! Or you can cheat and use the Transfer Time Calculator... http://www.pmarks.net/homepage/?page...program=ttcalc

If anyone has other suggestions on tools to measure HDD transfer speeds, etc. please post them here!
My System SpecsSystem Spec
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26 Nov 2010   #4
krokusnat

Windows 7 Ultimate x64
 
 



I was running utorrent, a-squared anti malaware, outpost firewall suite, hide my ass vpn, ccenhancer, and the usual system programs that run in the background...

EDIT: And by the way I had to use compatibility mode to use this particular program with Windows 7 X64..500gb Seagate Barracuda 7500 rpm 16mb cache....
My System SpecsSystem Spec
26 Nov 2010   #5
rap33042

Windows 7 Home Premium x64
 
 

Seagate 750GB Vertical storage and an older 160GB Seagate drive benched with HDTune.
There are settings for various KB block sizes within this utility that change the results dramatically.
I have HDTune currently set to 64KB:


Attached Images
  
My System SpecsSystem Spec
26 Nov 2010   #6
Darryl Licht

Windows 7 Ultimate 64 bit Steve Ballmer Signature Edition
 
 

Quote   Quote: Originally Posted by krokusnat View Post
EDIT: And by the way I had to use compatibility mode to use this particular program with Windows 7 X64..
Hmmmmm.... I didnt have any issues with it on my Win7 64bit.
My System SpecsSystem Spec
26 Nov 2010   #7
krokusnat

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Darryl Licht View Post
Quote   Quote: Originally Posted by krokusnat View Post
EDIT: And by the way I had to use compatibility mode to use this particular program with Windows 7 X64..
Hmmmmm.... I didnt have any issues with it on my Win7 64bit.

That's kinda weird huh?
My System SpecsSystem Spec
26 Nov 2010   #8
mickey megabyte

ultimate 64 sp1
 
 

samsung f3

was one of the fastest drives around when i bought it almost exactly a year ago.


Attached Images
 
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26 Nov 2010   #9
rap33042

Windows 7 Home Premium x64
 
 
HDTune Blcok Size Setting

Hello All:

I've noticed a huge difference in the HDTune results depending on the Block size setting I use.

Should I be matching the block size setting to the default NTFS 4k Block?

What is the meaning of this?
My System SpecsSystem Spec
26 Nov 2010   #10
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

Isn't it best to test various drives with a common file size? For example, a smaller files will transfer faster because it makes better use of the burst rate, whereas a larger file depends largerly on the sustained rate?

I remember actually writing a DOS batch file at work that used FSUTIL and a TIMETHIS command to build and test transfer rates for different files sizes across 4x15,000rpm SAS drives in a RAID0 array. I got some phenomenal speed from that BTW. Perhaps I'll bring that in and share it here?
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 What is actual SATA tranfer rate real world???




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