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SSD only reports half its speed

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+1 I cant think of anything else to try. If it scores low on a different system I would RMA it.
 
Does anyone know if the SB850 and SB950 are pretty similar? Just wondering if the SB850 doesn't really truly support sata3 well....for example my one P55 board had sata3 ports but my SSD would barely crack 400mb/s on it. But on an SB950 it went straight to 550 like it should have.
 
Well, I don't have another rig that runs SATA3 at the moment. I'll contact Mushkin and Gigabyte tomorrow; see if that goes anywhere.

Thanks for all the responses. I appreciate the effort..:grouphug:
 
Well I had a new main board with a new g620 Intel CPU but it was doa so I have to rma it with newegg. I have the best luck. I'll see if I can find one around...
 
Ok, I tested it in another pc but the AHCI was not enabled in its BIOS. I got 235MB/s write and 220MB/s read (SATA 3 port). I may have actually install win7 on the drive again in that pc to get the proper diagnosis. Any thoughts?
 
The difference in speed you saw there is pretty consistent with the losses seen by disabling AHCI. I suspect a reinstall on that machine is going to result in the same numbers you got on your main rig. I have a feeling that your drive has either bad firmware or was mislabeled because its performing EXACTLY how you would expect a SATA2 disk to. Nothing about this issue even resembles what we should be seeing from a SATA3 disk connected to a SATA3 port. Even a slow improperly implemented SATA3 port it should perform above 300MB/s if not 400+ as 87dtna reported earlier.
 
In your picture up there the third option says sata port 4/5 try changing IDE->SATA. Have you tried all of your sata ports to look for performance differences?
 
The difference in speed you saw there is pretty consistent with the losses seen by disabling AHCI. I suspect a reinstall on that machine is going to result in the same numbers you got on your main rig. I have a feeling that your drive has either bad firmware or was mislabeled because its performing EXACTLY how you would expect a SATA2 disk to. Nothing about this issue even resembles what we should be seeing from a SATA3 disk connected to a SATA3 port. Even a slow improperly implemented SATA3 port it should perform above 300MB/s if not 400+ as 87dtna reported earlier.

I think I'll fire an email to Mushkin (and Newegg) and see what they say. :thup:
 
Well won't need the screenshot now Mammut, I did something I thought I would never do in my life.....I called Mushkin tech support :bang head.

Talked to a guy by the name of Sean....nice guy.....we chatted for a few minutes about my hardware and what I had done so far. He says that he's seen some Gigabyte boards in the past that required a CMOS clear to fix it. So I said "Meh....why not?". I did a CMOS clear and.....


KABOOOOMMM!!!!!!

460MB write/540MB read!

Who 'da thunk it? I completely forgot a CMOS clear :facepalm:. Thumbs up for Mushkin tech support. :thup:


BTW thanks for all the posts and suggestions, I appreciate all the help again. :clap:
 
That has got to be one of the weirdest issues I have ever witnessed... Glad you got it working!
 
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