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Windows 7: poor SSD write performance


05 Nov 2012   #1

Windows 7 Ultimate x64
 
 
poor SSD write performance

I just discovered that my Samsung SSD (830 series, MZ-7PC064D/EU) shows a very poor write performance (161 MB) though my read performance is pretty fair (448 MB).
[IMG]http://s11.**************/qkuuvairn/05_11_2012_20_59_46.png[/IMG]

I searched the web for a while now and tried every suggestion anyone wrote - nothing worked, my speed stays low (in comparison to values other users of this SSD get: ~500MB read ~300MB write - without RAID!)

Here are my system specifications:
Mainboard: M4A87TD EVO
CPU: AMD Phenom II X6 1055T
RAM: 8GB 1333 MHz
OS: Windows 7 Ultimate 64bit, up to date

My SSD is plugged into the first SATA connector. All my drivers, my BIOS and the SSD's firmware are the latest ones, TRIM and AHCI are activated, all the usual SSD tweaks have been made (no defragmentation, no search indexing etc.).
I tried:
  • using the Microsoft AHCI driver instead of the AMD SATA one
  • disabling the write cache
  • installing the latest chipset drivers provided on AMD's website
  • installing the latest chipset drivers provided on ASUS' website
  • forcing SATA 6gb/s support in the BIOS
I really don't know what I should try next - any suggestions?


My System SpecsSystem Spec
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05 Nov 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

The write number of 161 is considerably faster than many SSDs.

Are you disappointed only because of the benchmark?

The most important factor is access time and that looks fine.
My System SpecsSystem Spec
05 Nov 2012   #3

Windows 7 Ultimate x64
 
 

Well I just stumbled upon the following result


and was wondering why I didn't get those values. There has to be some problem in my configuration, otherwise I would get the same values?!
My System SpecsSystem Spec
.


05 Nov 2012   #4

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

For one thing, small SSDs do not have the same performance as larger SSDs. How much difference I'm not sure.

Hard drives don't exist in isolation. If you benchmarked 100 Samsung 830s, I'd expect to see 100 different scores, even if properly configured.

Personally, I wouldn't lose much sleep over it, but that's up to you.
My System SpecsSystem Spec
05 Nov 2012   #5

Windows 7 Ultimate x64
 
 

I just found an answer (after hours of useless surfing because of some useless numbers ) - its definitely just the size of the SSD. All the benchmarks I found refer to bigger versions of my drive.

Now I just regret (a little ) I didn't invest a little more.
My System SpecsSystem Spec
05 Nov 2012   #6

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

Quote   Quote: Originally Posted by tomluft View Post
I just found an answer (after hours of useless surfing because of some useless numbers ) - its definitely just the size of the SSD. All the benchmarks I found refer to bigger versions of my drive.

Now I just regret (a little ) I didn't invest a little more.
Nah.....enjoy the money you didn't spend. Blow it on a good dinner or girlfriend. You likely would never have noticed the difference without a benchmark.

If you need more capacity, that's another question.
My System SpecsSystem Spec
05 Nov 2012   #7

Windows 7 Professional 64 bit
 
 

Yes, as you have now found out.

The actual quoted speeds from Samsung are 520/160 for the 64GB, 520/320 for the 128GB and 520/400 for the 256GB
My System SpecsSystem Spec
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 poor SSD write performance




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