zobbyblob Posted December 27, 2011 Share Posted December 27, 2011 Hey guys, I just bought a Corsair Force Series 3 180gb ssd and I ran the ATTO benchmarking tool. It told me that my drive was only writing at about 2/5ths of the speed it should be (about 225mb/s). Looking at the commercial speeds (~500mb/s), I am considerably slower. I also compared it to these results: http://www.servethehome.com/corsair-force-series-3-120gb-review-benchmarks/ I believe the only major tip I am not sure if I have done is checking if the SSD is in ACHI mode. I changed the registry and restarted, do I need to change the bios as well or should it be enabled by default? Could this be causing my drive to be around 300mb/s slower than advertised? Thank you for taking the time to read this, have a good day :biggrin: Link to comment Share on other sites More sharing options...
madnisman Posted December 27, 2011 Share Posted December 27, 2011 I believe the only major tip I am not sure if I have done is checking if the SSD is in ACHI mode. I changed the registry and restarted, do I need to change the bios as well or should it be enabled by default? You will need to check BIOS and set SATA controller to AHCI mode. I guess it is set to IDE by default. Could this be causing my drive to be around 300mb/s slower than advertised? No, that is not the reason. The problem is the Marvell SATA3 controller, which is connected via only one PCIe lane, resulting in a theoretical maximum of 5 Gb/s transfer speed. Besides that the Marvell controller is bugged and will never achieve full SATA3 speeds. The only ways to have full SATA3 speed would be either buying a high-priced SATA3 RAID PCIe card (LSI, Intel, stay away from Highpoint), or a new mobo (P67/Z68) with native Intel SATA3 controller (and a new CPU as well). The latter would be the cheaper way. Link to comment Share on other sites More sharing options...
Wired Posted December 27, 2011 Share Posted December 27, 2011 Post a pic of your ATTO results. Link to comment Share on other sites More sharing options...
zobbyblob Posted December 27, 2011 Author Share Posted December 27, 2011 Post a pic of your ATTO results. Thanks for the responses guys, I just set my controllers to AHCI mode, my read speeds seem to be very much improved, but not quite 500mb/s. Read speeds seem to be the same. I also made sure I'm plugged into a SATA 3 port. I've included the benchmarks this time. Link to comment Share on other sites More sharing options...
Wired Posted December 27, 2011 Share Posted December 27, 2011 To reiterate what madnisman said, you are seeing the limitations of the Marvell SATA III port. Link to comment Share on other sites More sharing options...
zobbyblob Posted December 27, 2011 Author Share Posted December 27, 2011 To reiterate what madnisman said, you are seeing the limitations of the Marvell SATA III port. This seems to be a quick fix then :biggrin: How do I tell the difference between Marvell SATA 3 ports and SATA 3 ports? I have a X58A-3D3R revision 2 motherboard. Link to comment Share on other sites More sharing options...
Yellowbeard Posted December 27, 2011 Share Posted December 27, 2011 This seems to be a quick fix then :biggrin: How do I tell the difference between Marvell SATA 3 ports and SATA 3 ports? I have a X58A-3D3R revision 2 motherboard. Look in your manual. It has a diagram. Link to comment Share on other sites More sharing options...
zobbyblob Posted December 28, 2011 Author Share Posted December 28, 2011 I got it guys, I read through the manual and learned that all my SATA 3 ports were GSATA 3 and controlled by Marvell, but my SATA 2 ports are the other type (ICH?), but I'm hitting the SATA 2 transfer cap. Looks like I need a new mobo with ICH SATA 3 ports. Link to comment Share on other sites More sharing options...
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