Kingston SSDnow v300 slow, not recognized by BIOS or Kingston toolbox

Deskt0p

Honorable
Mar 31, 2013
3
0
10,510
Just got a SSDnow v300. Got Windows 7 on it, and it boots fine! Mobo: Asus Rampage Gene III (it has two sata3 ports which I'm using the first for SSD, 2nd for HDD)

Running CrystalDiskMark with random data I get:
Sequential Read of sub-180MB/s
Sequential Write of sub-80MB/s

(With sets with data filled with 0, I get measurements closer to 350/250, which is still not up to par with Kingston's 450/450 statement, with the same benchmark (ATTO, uncompressed) )

Which is pretty awful for an SSD. I checked out the firmware, Mine's 5.21, not 5.05 which was the soruce of a lot of controversy.

I'm beginning to think the SSD isn't in AHCI, but would it make such a big difference?
*Neither my bios nor Kingston Toolbox 2.0 recognize this drive. I installed W7 as IDE but I followed tutorials on how to set it to AHCI without reformatting as below:
I've set the three Start registry codes to 0 via admin regedit: msahci, pciide, iaStorV.

Here are photos of my bios not recognizing the SSD correctly.
http://imgur.com/a/njROf
 
Solution
Your benchmark results are normal.

Your motherboard does not have native SATA 3 (6Gb/s) ports. It uses a Marvell 9128 controller for the 6Gb/s ports. That controller has a data bandwidth of PCIe x1 at 5Gb/s (500MB/s).

The controller was released in 2009 and can't handle the performance of current generation SSDs.

You need to upgrade your motherboard to one that has Intel 6Gb/s ports in order to get advertised Read/Write speeds from your SSD.

Connect your SSD to one of the Intel SATA 2 (3Gb/s) ports, set the port to AHCI mode in BIOS, and see if the SSD will be recognized.
Your benchmark results are normal.

Your motherboard does not have native SATA 3 (6Gb/s) ports. It uses a Marvell 9128 controller for the 6Gb/s ports. That controller has a data bandwidth of PCIe x1 at 5Gb/s (500MB/s).

The controller was released in 2009 and can't handle the performance of current generation SSDs.

You need to upgrade your motherboard to one that has Intel 6Gb/s ports in order to get advertised Read/Write speeds from your SSD.

Connect your SSD to one of the Intel SATA 2 (3Gb/s) ports, set the port to AHCI mode in BIOS, and see if the SSD will be recognized.
 
Solution