When I adjust the multiplier in the bios, save and reboot, the settings have not saved and cannot save. I did although increase the FSB from 200 to 212.5 and this is as much as I can go for stable OC. This problem has been like this since I've bought it. Recently I replaced four failed capacitors from the P4 connector circuit (fixed a no-windows boot problem hang at mup.sys), and placed heatsinks on the voltage regulators in the P4 connector circuit as well because they were above spec at 105* C. The choke coils also get too hot at 100*C but there is good enough ventilation there. I have upgraded to a corsair vx550 PSU which is great.
--------[ CPU ]---------------------------------------------------------------------------------------------------------
CPU Properties:
CPU Type QuadCore AMD Phenom X4 Black Edition 9850, 2648 MHz (12.5 x 212)
CPU Alias Agena
CPU Stepping DR-B3
Instruction Set x86, x86-64, MMX, 3DNow!, SSE, SSE2, SSE3, SSE4A
Original Clock 2500 MHz
Min / Max CPU Multiplier 5.0x / 31.5x
Engineering Sample No
L1 Code Cache 64 KB per core
L1 Data Cache 64 KB per core
L2 Cache 512 KB per core (On-Die, ECC, Full-Speed)
L3 Cache 2 MB (On-Die, ECC, NB-Speed)
Multi CPU:
Motherboard ID OEM00000 PROD00000000
CPU #1 AMD Phenom(tm) 9850 Quad-Core Processor, 2648 MHz
CPU #2 AMD Phenom(tm) 9850 Quad-Core Processor, 2648 MHz
CPU #3 AMD Phenom(tm) 9850 Quad-Core Processor, 2648 MHz
CPU #4 AMD Phenom(tm) 9850 Quad-Core Processor, 2648 MHz
CPU Physical Info:
Package Type 940 Pin uOPGA
Package Size 4.00 cm x 4.00 cm
Transistors 463 million
Process Technology 11Mi, 65 nm, CMOS, Cu, Low-K, DSL SOI
Die Size 283 mm2
I/O Voltage 1.2 V + 2.5 V
CPU Manufacturer:
Company Name Advanced Micro Devices, Inc.
Product Information http://www.amd.com/us-en/Processors/...30_118,00.html
CPU Utilization:
CPU #1 / Core #1 0 %
CPU #1 / Core #2 0 %
CPU #1 / Core #3 0 %
CPU #1 / Core #4 0 %

--------[ BIOS ]--------------------------------------------------------------------------------------------------------
BIOS Properties:
BIOS Type Award
BIOS Version 2302
Award BIOS Type Phoenix - AwardBIOS v6.00PG
Award BIOS Message ASUS M2A-VM ACPI BIOS Revision 2302
System BIOS Date 02/05/09
Video BIOS Date 03/03/08

And I have the latest BIOS.

--------[ Motherboard ]-------------------------------------------------------------------------------------------------

Motherboard Properties:
Motherboard ID 02/05/2009-690G-SB600-M2A-VM-00
Motherboard Name Asus M2A-VM

Front Side Bus Properties:
Bus Type AMD K10
Real Clock 212 MHz
Effective Clock 212 MHz
HyperTransport Clock 1059 MHz
North Bridge Clock 2118 MHz

Memory Bus Properties:
Bus Type Ganged Dual DDR2 SDRAM
Bus Width 128-bit
DRAM:FSB Ratio 12:6
Real Clock 424 MHz (DDR)
Effective Clock 847 MHz
Bandwidth 13558 MB/s

Motherboard Physical Info:
CPU Sockets/Slots 1 Socket AM2
Expansion Slots 2 PCI, 1 PCI-E x1, 1 PCI-E x16
RAM Slots 4 DDR2 DIMM
Integrated Devices Audio, Video, Gigabit LAN
Form Factor Micro ATX
Motherboard Size 230 mm x 240 mm
Motherboard Chipset AMD690G
Extra Features Q-Fan

Motherboard Manufacturer:
Company Name ASUSTeK Computer Inc.
Product Information http://www.asus.com/products.aspx?l1=3
BIOS Download http://support.asus.com/download/dow...Language=en-us
Driver update http://driveragent.com?ref=59
BIOS Upgrades http://www.esupport.com/biosagent/in...m?refererid=40


One can view the motherboard on NCIX, it's hidden from search (out of stock/discontinued) though here's the unlisted URL
http://www.ncix.com/products/index.php?sku=23404