kuebk Posted July 29, 2014 Share Posted July 29, 2014 Hello, Problem happens on my new platform i7-4770k + Z87 Extreme 4. After Corsair has replaced my last drives (which were the oldest Force series) I've got back new Force GT drives. So I did a fresh Win7 x64 installation, installed all the drivers that came from ASRock on their cd, installed all windows updates and stuff like this. After all of these, I've started ATTO to see how my drives are perfoming, and this is what I saw: http://i.imgur.com/XFdaSAh.png http://i.imgur.com/WkiUzLJ.png The performance for samples below 128kb seems bad - shouldn't the drives be much faster there? What I did and did not help: - updated to the latest RST and INF drivers - tried to mess with caching policies in drives settings - in BIOS set the drive types to ssd I have no idea what can I do more, any ideas? Thanks. Link to comment Share on other sites More sharing options...
Toasted Posted July 30, 2014 Share Posted July 30, 2014 Have you tried a different SATA data port and SATA data cable? Link to comment Share on other sites More sharing options...
kuebk Posted July 30, 2014 Author Share Posted July 30, 2014 No, I have not. I'm using SATA 1st/2nd Intel ICH ports and cables which came with motherboard. Will try to change cable/ports. Link to comment Share on other sites More sharing options...
kuebk Posted August 2, 2014 Author Share Posted August 2, 2014 Different cables/ports has not changed anything. :( Link to comment Share on other sites More sharing options...
Toasted Posted August 3, 2014 Share Posted August 3, 2014 Backup all your data and secure erase the SSD and see if that restores the drive's performance. Link to comment Share on other sites More sharing options...
bogdan_kr Posted August 4, 2014 Share Posted August 4, 2014 I know it's Win7 but are the partitions aligned properly? Is the AHCI mode set in BIOS? Could you post AS SSD Benchmark screenshots? Link to comment Share on other sites More sharing options...
kuebk Posted August 9, 2014 Author Share Posted August 9, 2014 AHCI enabled, partitions aligned correctly. Screenshots: http://i.imgur.com/wUn7pQ4.png http://i.imgur.com/5JiHlt6.png Link to comment Share on other sites More sharing options...
kuebk Posted August 24, 2014 Author Share Posted August 24, 2014 If I enable the "External drive" option on my ssd drives in BIOS, all the ATTO samples looks correctly but limited to SATA2. http://i.imgur.com/0649Z2h.jpg So the performance drop only happens while drives use SATA3 mode, why? Link to comment Share on other sites More sharing options...
Toasted Posted August 25, 2014 Share Posted August 25, 2014 Have you tried secure erasing the SSD, reisntall Windows and run another ATTO benchmark? Link to comment Share on other sites More sharing options...
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