Ssd not posting advertised numbers

[kaitanium]

i know advertised anything isnt something to be believed but when it comes to ssds, my friends ssd (samsung 830, 256gb) drive regularly maxes at pretty much its advertised read (520) and write (360) speeds whereas my kingson hyperx 3k 120gb just basically edges out a little over sataII numbers (369mb/sec max, 166mb/sec min).

what could be happening here? both benched with hdtune. both with a fresh install of windows. I even just reinstalled windows as i thought it may have still been thinking that it was still hooked up to my old sataII mobo.

my ahci is enabled in the mobo bios. all updated chipset/sata drivers and mobo bios version, went through ssd optimization articles such as the one found here on TH...

 

[Dereck47]

Advertised speeds for your drive are with ATTO software, which uses highly compressible data to test Read/Write speeds.

 

[Dark Lord of Tech]

http://www.filehippo.com/download_asssdbenchmark/

 

[Dark Lord of Tech]

kingson hyperx 3k < true kingston uses the atto bench results.


Benchmarks Atto and AS SSD:

Sequential read performance
AS SSD: Megabytes per second: Bigger is better
KINGSTON HYPERX 3K 120GB: 458
PATRIOT PYRO SE 120GB: 507
CORSAIR PERFORMANCE PRO 120GB: 492

Sequential write (compressible data)
ATTO: Megabytes per second: Bigger is better
KINGSTON HYPERX 3K 120GB: 171
PATRIOT PYRO SE 120GB: 166
CORSAIR PERFORMANCE PRO 120GB: 332

4K random write (incompressible data)
AS SSD: Megabytes per second: Bigger is better
KINGSTON HYPERX 3K 120GB: 15.54
PATRIOT PYRO SE 120GB: 19.46
CORSAIR PERFORMANCE PRO 120GB: 24.65

 

[Dark Lord of Tech]

http://www.legitreviews.com/article/1961/4/

 

[cin19]

Do you have the AMD MB?

Because the AMD SATA driver is slower then the MS AHCI driver, if you use the AMD I think you can try to uninstall the AMD one (using the default microsoft drivers ), and run the benchmark again, you can check out the link (someone try it).
http://rog.asus.com/forum/showthread.php?12882-AMD-AHCI-vs-MS-AHCI-SSD-Testing

Also you can see most of them using iaStor(from intel) or msAHCI.