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Kingston HyperX SSD Poor Write speeds

Last response: in Storage
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April 2, 2012 8:30:10 PM

I have recently purchased a Kingston HyperX 120Gb SSD.

I have done a fresh install of Windows 7 x64 and Ahci was enabled before installing.

According to AS-SSD Im getting read speeds of around 440mb/s (a little short than its advertised 540mb)
But im only getting write speeds of 130mb/s, this is only slightly faster than my Raptor which I tested at 129mb/s

I have disabled Indexing, disabled Write Cache, disabled defrag and installed the lasted drivers for my motherboard.
I changed the the drive to another SATA3 port and its no different. I changed it to the onboard Marvell SATA3 port and the read speed dropped to about 350mb/s and the write to about 120mb/s

Any ideas of what else can be causing the slow write speed or know what other applicaiton I can test it with?

Current Spec.
CPU intel 2500K
ASUS P8P67 LE Motherboard
Kingston HyperX SSD 120Gb
Raptor 450Gb HDD

Thanks
a b G Storage
April 2, 2012 8:44:15 PM

Do you have the latest firmware for your ssd? you should check the kingston site to make sure. Some of the SSD's required firmware updates from the get-go to get close to their advertise speeds.
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April 2, 2012 9:26:36 PM

Hi Again,

I forgot to mention that I checked the firmware before I installed Windows.

But I think Dereck47. I think you have nailed the issue on the head. ATTO is reporting 520mb/s write and 555mb/s read.
April 2, 2012 11:20:47 PM

Thanks from here as well. I am getting rid of As ssd.
a b G Storage
April 2, 2012 11:27:38 PM

There's no reason to disable write caching. Write caching will improve your random write performance because they can be batched in RAM.
April 3, 2012 7:49:16 AM

aicom said:
There's no reason to disable write caching. Write caching will improve your random write performance because they can be batched in RAM.


I read on several sites to disable it. I dont understand the logic but I think it was more a case of it can help prolong the life of the drive.
But I think the same article stated that it will take 7-10 years before the performance drops significantly and by that time you would have got another drive.
!