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SSD not running at full speed

Last response: in Storage
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March 21, 2012 5:17:53 AM

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=N82E168...

More about : ssd running full speed

March 21, 2012 11:41:30 AM

I guess you missed "up to" keyword in this advertisement. Check for review in the internet, ~400MB sounds good for this sandforce based SSD.
March 21, 2012 11:51:53 AM

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.
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March 21, 2012 12:22:47 PM

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.
March 21, 2012 12:25:17 PM

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

a c 105 G Storage
March 21, 2012 12:57:50 PM

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-benchmar...

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


March 21, 2012 5:04:31 PM

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.
March 21, 2012 5:12:41 PM

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.
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