Hi,
My motherboard is a Dell variant of an H67 and the other two guys (the other one is ryomitomo) who have the same problem who posted in that thread have ASUS P67.
I also found posts in a German forum from someone who had the same problem.
Most people who have two identical SSDs probably use them in RAID not AHCI (as I am having to do at the moment) so that's probably why there haven't been more reports yet. Also, I'm not sure how far rolled-out the PPG/PWG4 firmware is. I guess I was unlucky to have bought two drives a couple of weeks apart and ended up with different firmware.
One of the things is that the speed isn't throttled back. Using the Intel Rapid Storage Tool that was with my system and is also bundled with the drives, I can see whether or not a drive is reporting as 3gb/s or 6 gb/s. It's not a case of it being a slow 6 gb/s but just not being recognised as SATA 3 at all. Weirdly enough when I booted from cold they were both 6gb/s but after a restart one or both would be 3 gb/s until I did a complete cold start again. I also ran various benchmark tools to see if the IRST was reporting accurately and it was: when it said 3gb/s the speed was much slower than when it said 6gb/s.
Here is one the earlier replies from Intel:
Dear Mr Pugh,
Many apologies for the delay in responding to you in regards to your Intel® Support Ticket 8000290527- INTEL® SOLID-STATE DRIVE 510.
I have been informed that currently there are no immediate Firmware releases planned to be published for the 510 SSD series.
Also after having spoken to a product specialist it has been confirmed that we haven’t seen performance related issues in regards to the 6 Gb/s SATA throughput rate problem as described by you, but there may be a difference in performance between individual FW levels.
I have followed the threat on the Intel® communities (http://communities.intel.com/thread/23997?tstart=0) and noticed that implementing a RAID 0 helped that both drives stay at 6Gb/s.
In your specific case we wouldn’t be able to comment further in regards to performance as the SSD’s are implemented on a DELL system and the variance in throughput rate you described moist likely is down to the system. As a previous support engineer advised you it would be down to DELL to look into this as we haven’t seen the issue ourselves. I understand that DELL at the time did advise you that they haven’t validated these drives yet on their OY2MRG Desktop system.
I would like to thank you for your feedback and I have followed the discussion on the communities with interest.
Kind Regards
Mario H.
Then later:
Dear Mr Pugh,
Thank you for your email from 20th September 2011.
As advised in my previous email your enquiry and the related Service Ticket is still escalated.
We are investigating the issue further and will respond to you appropriately.
Both your recent emails I have forwarded.
For further questions in regards to this ticket please refer to Jim Morris, WW Compliance Manager at Jim.Morris@Intel.com.
Kind regards
Mario H.
It appears that they realised they could no longer pass the buck to Dell when the other people posted their problems too. I hope they do sort this out and it seems obvious that it's firmware related. As soon as Bannon replaced the PWG2 drive with a PWG4 one the problem went away. Unfortunately I don't have the extra £200 to go and do that myself at the moment!