Hi, I have a SSD speed issue which is bothering for several weeks, I have searched online for all solutions and also installed the Latest driver pack found here (plus manually doing it in Device Manager too), but without a good outcome. Please if anyone of you can give further advice and help here. Thanks!
With my system (information as follows), when connecting to SSD in Raid 0, the speed will sometimes change to Sata (1.5 gbps). But my motherboard should work in Sata 2 (3 gbps). There are 4 Sata ports.
The problem is, this situation is always changing every time I am restarting the PC. I.e.:
For once, I get Sata 2 (3 gbps) + Sata 2 (3 gbps) for both SSD;
For another, I get Sata (1.5 gbps) + Sata (1.5 gbps) for both SSD;
For another, I get Sata 2 (3 gbps) + Sata (1.5 gbps) for both SSD;
And another restart, I get Sata (1.5 gbps) + Sata 2 (3 gbps)… So it is never consistent.
You can see one of the example in the detail info below, i.e. from the “current interface speed” from hwinfo64.
So the ‘chance’ where I can hit Sata 2 for both… is pretty slim and causes multiple restart and luck…
And when my system is not appearing in Both Sata 2 for Both SSD, it will slow down the read and write speed by half (both confirmed by crystaldiskmark and userbenchmark). Any idea? Sincerely appreciates it and thanks! 
Hardware ID:
PCI\VEN_10DE&DEV_07F8&SUBSYS_01371025&REV_A2
PCI\VEN_10DE&DEV_07F8&SUBSYS_01371025
PCI\VEN_10DE&DEV_07F8&CC_010485
PCI\VEN_10DE&DEV_07F8&CC_0104
Information from hwinfo64:
Motherboard:
Computer
Computer Brand Name: ACER Aspire M3641
Motherboard
Motherboard Model: ACER MCP73PV
Motherboard Chipset: nVidia nForce 7100-630i (MCP73PV)
Motherboard Slots: 1xPCI, 1xAGP, 2xPCI Express x1, 1xPCI Express x16
PCI Express Version Supported: v1.1
USB Version Supported: v2.0
BIOS
BIOS Manufacturer: Acer, American Megatrends
BIOS Date: 09/11/2008
BIOS Version: R01-B4
UEFI BIOS: Not Capable
Super-IO/LPC Chip: ITE IT8718F, Rev G
Bus → PCI Bus #0 → NVIDIA MCP73 - SATA RAID Controller:
General Information
Device Name: NVIDIA MCP73 - SATA RAID Controller
Original Device Name: NVIDIA MCP73 - SATA RAID Controller
Device Class: RAID controller
Revision ID: A2
PCI Address (Bus:Device:Function) Number: 0:14:0
PCI Latency Timer: 0
Hardware ID: PCI\VEN_10DE&DEV_07F8&SUBSYS_01371025&REV_A2
System Resources
Interrupt Line: IRQ20
Interrupt Pin: INTA#
I/O Base Address 0 C480
I/O Base Address 1 C400
I/O Base Address 2 C080
I/O Base Address 3 C000
I/O Base Address 4 BC00
Memory Base Address 5 FCE7C000
Features
Bus Mastering: Enabled
Running At 66 MHz: Capable
Fast Back-to-Back Transactions: Capable
SATA Host Controller
Interface Speed Supported: Gen2 3.0 Gbps
Number Of Ports: 4
External SATA Support: Not Capable
Aggressive Link Power Management: Capable
Staggered Spin-up: Not Capable
Mechanical Presence Switch: Not Capable
Command Queue Acceleration: Not Capable
64-bit Addressing: Capable
AHCI Status: Enabled
AHCI Version: 1.10
Ports Implemented: 0, 1, 2, 3
SATA Port#0
Port Status: Device Present, Phy communication established
Current Interface Speed: Gen1 1.5 Gbps
External SATA Port: Not Capable
Hot Plug: Capable
Device Type: ATAPI
SATA Port#1
Port Status: No Device Present
External SATA Port: Not Capable
Hot Plug: Capable
SATA Port#2
Port Status: Device Present, Phy communication established
Current Interface Speed: Gen2 3.0 Gbps
External SATA Port: Not Capable
Hot Plug: Capable
Device Type: SATA
SATA Port#3
Port Status: Device Present, Phy communication established
Current Interface Speed: Gen1 1.5 Gbps
External SATA Port: Not Capable
Hot Plug: Capable
Device Type: SATA
Driver Information
Driver Manufacturer: NVIDIA Corporation
Driver Description: NVIDIA nForce Serial ATA Controller
Driver Provider: NVIDIA Corporation
Driver Version: 11.1.0.43
Driver Date: 09-Apr-2010
DeviceInstanceId PCI\VEN_10DE&DEV_07F8&SUBSYS_01371025&REV_A2\3&267A616A&0&70
Location Paths PCIROOT(0)#PCI(0E00)
@audiobean - Please link to stock BIOS download from Acer for the version you are using] never mind, found it! Maybe I can set all SATA Ports to 3Gb/s instead of Auto
* Edit, sorry nothing I can see to lock in anything like that 
Maybe this is a common known issue with your Nvidia chipset and @Fernando can advise something for you to try with the drivers or other things
Thanks for the information. Yes if you see from the bios, something to unlock, that will be the best…
Will wait for further advice. Well this is no doubt an old motherboard, but combining it with SSD + good graphics card, running the recent games in mid level of graphic details are still, quite do-able. I’m basically setting this up for my kid.
Appreciate any advice. Thanks!
Hi, does anyone has further suggestions for me to try on the SSDs and Drivers? Many thanks.