I have an 840 pro 256mb ssd on a ga_p67a-ud4-be motherboard. 8 gigs 1600 ram. 2500k processor overclocked to 4.2ghz. Using Samsung Magician benchmark I get 550mb read but only 325mb write speeds...If I disable system restore speeds on write go up to 400mb - but I don't want to do that. I've done all other possible optimizing tweaks. From what I've read and seen ---- I'm using MSAHCI but best scores seem to happen with IASTOR or IASTORV - can I change my driver ...if so how the hell???
I know ahci is on and the sata interface is at 6gb. I'm assuming msahci is capping the write speed
thanks for reply --- I was on to this but in the instructions it says to check your current ahci controller ---"From the Device Manager, look for an entry named
'IDE ATA/ATAPI controllers'. If this entry is present,
expand it and look for one of the controllers listed
in the Overview Section1. If an AHCI controller is
identified, then the system is in AHCI mode.
If none of the controllers above are shown, then
your system is not in AHCI mode. No other modes are
supported by Intel(R) Rapid Storage Technology
and you should continue with step 7 below.
7. Your system does not appear to be running in RAID or
AHCI mode. If you feel that your system is running in
RAID or AHCI mode and you do not see any of the
controllers listed above, you may choose to contact
your system manufacturer or place of purchase for
I know i'm in ahci mode but my system properties says "6 series/c200 seres chipset family 6 port sata ahci controller - ic02' === BUT THIS F'ER ISN'T LISTED IN THE 'in the Overview Section1' -- here's the dam list '
- Intel(R) 7 Series/C216 Chipset Family SATA AHCI Controller
- Intel(R) 7 Series Chipset Family SATA AHCI Controller
- Intel(R) Desktop/Workstation/Server Express Chipset SATA AHCI Controller
- Intel(R) Mobile Express Chipset SATA AHCI Controller
- Intel(R) 5 Series/3400 Series SATA AHCI Controller
- Intel(R) 5 Series 4 Port SATA AHCI Controller
- Intel(R) 5 Series 6 Port SATA AHCI Controller
- Intel(R) ICH10D/DO SATA AHCI Controller
- Intel(R) ICH10R SATA AHCI Controller
- Intel(R) ICH9M-E/M SATA AHCI Controller
- Intel(R) ICH7M/MDH SATA AHCI Controller
- Intel(R) ICH7R/DH SATA AHCI Controller
---- by the way --- I do have iastor drivers on my system I just don't know how to have the ssd hooked to them ----do these activate when you specify RAID in bios? is it ok to set RAID option when only have 1 drive?
If you decide to use version 12.5, then if you look at the “Read Me” notes it will show that it is compatible with the “Intel(R) 6 Series/C200 Series Chipset Family SATA AHCI/RAID Controller”, which is the category that your P67 chipset falls into.
Whatever version you decide to use, just double-click the file to install the driver.
Leave your SATA ports in AHCI mode; no need to change them to RAID mode unless you’re going to create a RAID array.
under 12.5 - current driver
<Name>ATA Samsung SSD 840 SCSI Disk
Its not that low. In regular usage, you won't notice a difference between 340mb/s and 520mb/s. Its still a hell of alot faster than a HDD.
yeah -- i'm getting resigned to that - but It bugs me that i'm not getting advertised seed -- I've done all suggested tweaks other than turning system restore off - which gets me around 400 - restore has saved my butt on several occasions. can't understand why you cant copy/save restore points but that's another issue.
I'm running bios version F2 add F9 is out, but I'm nervous about flashing it.
ok -- what I didn't try was testing with the 12.5 version driver - AND - system restore OFF...
with restore off getting 500+ write speed so that's IT ! ( fat lady sings )Well back to restore on and lower write speed
for me -- I just wanted to know why -- Thanks for all help Dereck47 & popatim & David Mourao