April 12, 201115 yr trying to figure out why it shows my drives at 1.5 when they are 3.0 capable. my sata cables are cables from monoprice that are capable of 6.0 transfer rates and my MB is also capable of 6.0 i know real time transfer rates wont be up to this speed but will i notice a performance boost if they were showing 3.0 rather than 1.5??? also shouldnt all my drives be listed here ata1..ata2...ata3..etc i have 4 disks plus 1 parity shouldnt this be ata1-4? any reason why its ata2 and ata4 only? ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
April 12, 201115 yr To be honest, I doubt anyone else can figure it out either unless you tell us what motherboard and/or chipset you have and what the drives are. At the end of the day, 1.5Gb/s is still faster than the drive can read or write the data to the disk surface and faster than a 1Gb/s network, so it's often not a big deal.
April 12, 201115 yr If that's on the motherboard connectors then you've got a BIOS setting wrong. Peter
April 12, 201115 yr Author my mother board is ASRock 890FX DELUXE3. Chipsets *North Bridge AMD 890FX *South Bridge AMD SB850 drives are WD EARS with jumpers on 7/8 plus one WD EADS no jumpers of course. I know the drive wont write to 1.5 but i was thinking maybe if i get this corrected it might see some sort of performance boost. I am on a Gigabit network with cat6 cables Im sure i got a setting wrong in the BIOS i just changed a few settings because one of my disks was reading as hdX rather than sdX so i messed with a few things i do have them all reading sdX now but probably one of the things i changed affected this. only changed things that had to do with IDE and ACHI could one of those be the causing factors? thanks
April 12, 201115 yr Author i do not want to mess anything up more than I already have. here are my current bios settings in regards to my drives On Board Sata Controller -Enabled Sata Operations mode -AHCI is picked..other choices IDE, RAID AMD AHCI Bios Rom -Disabled Sata IDE Combined Mode -Disabled Marvell Sata3 Controller -Enabled Marvell Sata3 Operation Mode -AHCI...other choice IDE On Board IDE/1394 Controller - Enabled
April 13, 201115 yr As mentioned earlier 1.5Gbps is faster than the drive can be read or written and is faster than 1Gbps Ethernet. The faster speed is only needed if you use a port multiplier. You won't see any performance benefit.
April 13, 201115 yr Maybe some info here that will help: AHCI 1.0 Spec http://www.intel.com/technology/serialata/pdf/rev1_0.pdf The HBA indicates the maximum speed it can support via the CAP.ISS register. Software can further limit the speed of a port by manipulating each port’s PxSCTL.SPD field to a lower value. If software writes a value that is greater than the value in CAP.ISS, the actual speed negotiated will be limited by CAP.ISS, as shown in the following table: CAP.ISS PxSCTL.SPD Maximum Speed Negotiated 1h 0h 1.5 Gbps 1h 1h 1.5 Gbps 1h 2h 1.5 Gbps 2h 0h 3 Gbps 2h 1h 1.5 Gbps 2h 2h 3 Gbps If PxSCTL.SPD is set to a non-zero value when system software loads, platform BIOS (or expansion ROM) decided that the current port required speed limitation. Speed limitation may be set by the platform BIOS to avoid an inordinate number of errors on a port; e.g. a laptop swapbay connector that goes through several intermediate connectors may need to speed limitation for robust operation. If PxSCTL.SPD is set to a non-zero value when system software loads, system software should preserve this setting, including across power management state transitions. It is recommended that platform BIOS (or expansion ROM) not specify a speed limitation unless it is necessary for robust operation. If system software encounters errors and speed could be limited further, system software is allowed to restrict the speed negotiated to a slower rate.
April 13, 201115 yr Do these drives happen to be on the Marvell 9123/9120 ports? That runs on a single PCIe x1 lane
April 13, 201115 yr Author duely noted about not being able to write up to 1.5 but i wasnt sure if correcting or figuring out this issue would increase performance any thats all... @mbryanr all my drives are in the board not on pcie cards or anything
April 13, 201115 yr 2 of the 8 on-board ports are driven by the Marvell controller http://www.asrock.com/mb/manual.asp?Model=890FX%20Deluxe3
April 13, 201115 yr Author thanks @mrbryanr the 2 ports controlled by marvell are ports 7/8 currently i am only using 1-5 and please forgive me you are speaking to an idiot...what is the significance of the marvell thing..are some of my bios settings wrong?
April 13, 201115 yr Are you sure you jumpered pins 7&8. If you jumper pins 5&6 on a WD drive it sets the drive to be 1.5Gbps. Pins 7&8 are the left most pins when looking at the connector end of the drive with the shiny label side up. http://www.wdc.com/en/library/eide/2579-001037.pdf Peter
April 13, 201115 yr Author ya man positive on 7/8 just incase i checked right now. my EADS does NOT have a jumper on it and that still shows 1.5 like mentioned above i guess it doesnt matter if 1.5 wont affect my performance...just frustrates me its not what it should be...lol
April 13, 201115 yr Try resetting the BIOS/loading defaults. Then, only change to AHCI and to boot from USB. Well, you can turn off unused stuff like serial and parallel ports if you want. Peter
April 14, 201115 yr Author tried resetting bios changed one thing at a time for the ahci stuff but still says 1.5 whatever ill just leave it i guess thanks for your help
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