SSD not running at full speed

[Lucid155]

Hello all,
First of all i would like to say i have spent nearly 3-4 hours following ALL guides posted in the sticky on optimization and everything is up to date. I have the Corsair Force GT 90GB SSD which is advertised at 555 MB/s read and 505 MB/s Write. I ran HDTune and am only getting about 417 MB/s max for my read, and cant test the write. Does anyone have any input on making it perform quicker?
My mobo is: http://www.newegg.com/Product/Product.aspx?Item=N82E16813128435

 

[kosecki]

I guess you missed "up to" keyword in this advertisement. Check for review in the internet, ~400MB sounds good for this sandforce based SSD.

 

[wpcoe]

Two of the "usual suspects" when getting less-than expected SSD speed: check that your SSD is on a SATA-3 port (not a 3Gbps SATA-2 port) and verify that AHCI is selected as the controller mode in BIOS.

If you've already installed Windows and find your controller mode in BIOS is IDE, there is a Registry tweak you need to make before you change BIOS to ACHI, otherwise you won't be able to boot into Windows.

[edited to add:] Try a different SATA cable and a different SATA-3 port. Not all SATA cables are created equal, and it's not unknown for a port to be defective.

 

[Device Unknown]

The others posted good responses but also make absolutely sure you are have the SSD plugged into your Intel Controller and NOT the Marvell Controller. Huge difference in performance.

 

[SkyWalker1726]

OCZ Agility 3 With upto 500 , and i'm getting 315 .
as far as i can tell that's normal

 

[JackNaylorPE]

The Force GT is not among the fastest units. In the 120 size, the Force GT is Tier 6 and the fastest are at Tier 3 which represents a 33% difference according to the link below:

http://www.tomshardware.com/reviews/ssd-review-benchmark,3139-6.html

Tier 3 (120/128GB Size)

Mushkin Chronos Deluxe 120 GB
OCZ Vertex 3 Max IOPS 120 GB
Patriot WildFire 120 GB
Samsung 830 SSD 128 GB

Tier 6 (120/128GB Size)

Adata S511 120 GB
Corsair Force GT 120 GB
Kingston HyperX SSD 120 GB
OCZ Vertex 3 120 GB

 

[Lucid155]

SO people were wrong on Newegg reviews when most of said they were getting FASTER times than advertised? Also, im pretty sure all of my ports are Sata, and how do i tell if its plugged into Intel or Marvell? There like 3 sets of 2 Sata ports stacked on top of eachother and i plugged my SSD into the first slot SATA0_3 i think is what it was.

 

[AtotehZ]

Where did you see those reviews? Did they post the test results with their comments? Most people don't know what they are talking about, a surprisingly big amount too.