Alright so i am having a very similar issue and i know that my computer is way more than i'm guessing 99% of the recommended system requirements for games out there. and the game that is causing this is currently Sword of the new world. Lord of the rings online caused it once but has not happened since i rebooted the computer afterwards. Sword causes it everytime without fail, anything else the computer runs as it should. the information is as follows. this was taken straight from the everest program so everything says trial because it wants me to upgrade to the new aida64 of which i have no intention of ever doing.
The processor is one of the ones that was originally a 955 then locked down to a 555 becasue they were running out of stock from what i have been reading about it. it fully unlocks to a quad Core processor and is absolutely stable at 4.1ghz. the Cooling system i use is the H50 watercooling system. so i know it is not overheating. i will post that as well.
CPU Type DualCore AMD Phenom II X2 Black Edition 555, 3200 MHz (16 x 200)
Motherboard Name Gigabyte GA-MA785GMT-UD2H (2 PCI, 1 PCI-E x1, 1 PCI-E x16, 4 DDR3 DIMM, Audio, Video, Gigabit LAN, IEEE-1394)
Motherboard Chipset AMD 785G, AMD K10
System Memory [ TRIAL VERSION ]
DIMM2: A-Data DDR3 1600G [ TRIAL VERSION ]
DIMM4: A-Data DDR3 1600G [ TRIAL VERSION ]
BIOS Type Award Modular (11/30/09)
Communication Port Communications Port (COM1)
Communication Port Printer Port (LPT1)
Display:
Video Adapter ATI Radeon HD 4850 X2 (1024 MB)
Video Adapter ATI Radeon HD 4850 X2 (1024 MB)
3D Accelerator ATI Radeon HD 4850 X2 (R700)
Monitor Generic PnP Monitor [NoDB]
Multimedia:
Audio Adapter ATI Radeon HDMI @ ATI RV770/790 - High Definition Audio Controller
Audio Adapter ATI Radeon HDMI @ ATI RV770/790 - High Definition Audio Controller
Audio Adapter Realtek ALC889A @ ATI SB750 - High Definition Audio Controller
Storage:
IDE Controller Standard Dual Channel PCI IDE Controller
IDE Controller Standard Dual Channel PCI IDE Controller
Floppy Drive Floppy disk drive
Disk Drive Hitachi HDP725050GLA360 ATA Device (500 GB, 7200 RPM, SATA-II)
Optical Drive Optiarc DVD-ROM DDU1675A ATA Device (16x/48x DVD-ROM)
SMART Hard Disks Status OK
that is the end of what is pertinent to this particular posting. here are the temp reading from the same program
Field Value
Sensor Properties
Sensor Type ITE IT8718F (ISA 228h)
GPU Sensor Type Diode (ATI-Diode)
Motherboard Name Gigabyte MA785GM(T) / MA785GPM(T) Series
Chassis Intrusion Detected Yes
Temperatures
Motherboard 26 °C (79 °F)
CPU 30 °C (86 °F)
CPU #1 / Core #1 19 °C (66 °F)
CPU #1 / Core #2 19 °C (66 °F)
Aux 27 °C (81 °F)
GPU1: GPU Diode (DispIO) 38 °C (100 °F)
GPU1: GPU Diode (MemIO) 42 °C (108 °F)
GPU1: GPU Diode (Shader) 42 °C (108 °F)
GPU2: GPU Diode (DispIO) 38 °C (100 °F)
GPU2: GPU Diode (MemIO) 38 °C (100 °F)
GPU2: GPU Diode (Shader) 42 °C (108 °F)
Hitachi HDP725050GLA360 [ TRIAL VERSION ]
Cooling Fans
CPU 990 RPM
Fan #4 1398 RPM
GPU1 3%
GPU2 3%
Voltage Values
CPU Core 1.10 V
+3.3 V 3.36 V
+12 V [ TRIAL VERSION ]
VBAT Battery 3.09 V
DIMM 1.60 V
it will not tell me what the 12v is at but its going to be a little up there. had to hardwire two new fans into the PSU and so dont know whether or not that could be affecting it. but the thing is that i do not believe it is as everything else has been absolutely fine. the processor was returned to normal clocking for testing as well because i thought it might be that but there has been no change in what happens.