Video Encoding randomly reboots computer, cpu is Prime Stable

I dont know what the deal is. Whenever I am doing some video encoding, my computer restarts randomly. I just primed the computer last night for 10hrs with no issues. I dont have any idea what the problem could be. If anything would show instability, I thought it would be prime95. My temps are ok, max at 45 with a slightly warm ambient and I believe I have a sufficient psu. Computer is in my sig. My main concern is my core voltage, it appears to be drooping quite a bit, however bios shows the voltage to remain relatively stable. But I would think Prime95 would cause the reboots if it was the core voltage causing the problem. This is what MBM shows me. Any ideas? I am stumped and starting to get aggrevated by these reboots.

Sidenote: I also lowered my FSB by 10mhz and I still got a random reboot.

Encoding
+-------------------------------------------------------------------------+
|Total number of readouts: 51 CPU Speed: 2205 MHz |
|Running from: 1/23/2005 12:38:51 PM until: 1/23/2005 12:47:16 PM |
+-----------------------------+----------+----------+----------+----------+
|Sensor | Current | Low | High | Average |
+-----------------------------+----------+----------+----------+----------+
|Case | 25° C | 24° C | 25° C | 24° C |
|CPU | 42° C | 41° C | 42° C | 41° C |
|Sensor 3 | 0° C | 0° C | 0° C | 0° C |
|Core 0 | 1.63 V | 1.60 V | 1.63 V | 1.62 V |
|Core 1 | 2.93 V | 2.93 V | 2.94 V | 2.94 V |
|+3.3 | 3.30 V | 3.26 V | 3.31 V | 3.29 V |
|+5.00 | 5.03 V | 5.03 V | 5.03 V | 5.03 V |
|+12.00 | 11.98 V | 11.98 V | 12.10 V | 12.02 V |
|-12.00 | -11.94 V | -11.94 V | -11.94 V | -11.94 V |
|-5.00 | -5.09 V | -5.09 V | -5.04 V | -5.08 V |
|Fan 1 | 3750 RPM | 3750 RPM | 3792 RPM | 3758 RPM |
|Fan 2 | 0 RPM | 0 RPM | 0 RPM | 0 RPM |
|Fan 3 | 8881 RPM | 8653 RPM | 8881 RPM | 8854 RPM |
+-----------------------------+----------+----------+----------+----------+

Prime95
+-------------------------------------------------------------------------+
|Total number of readouts: 3624 CPU Speed: 2205 MHz |
|Running from: 1/23/2005 2:30:52 AM until: 1/23/2005 12:35:03 PM |
+-----------------------------+----------+----------+----------+----------+
|Sensor | Current | Low | High | Average |
+-----------------------------+----------+----------+----------+----------+
|Case | 26° C | 24° C | 27° C | 26° C |
|CPU | 46° C | 40° C | 47° C | 45° C |
|Sensor 3 | 0° C | 0° C | 0° C | 0° C |
|Core 0 | 1.63 V | 1.58 V | 1.65 V | 1.61 V |
|Core 1 | 2.94 V | 2.91 V | 2.96 V | 2.94 V |
|+3.3 | 3.30 V | 3.25 V | 3.31 V | 3.28 V |
|+5.00 | 5.03 V | 5.03 V | 5.03 V | 5.03 V |
|+12.00 | 11.98 V | 11.92 V | 12.16 V | 12.01 V |
|-12.00 | -11.94 V | -11.94 V | -11.86 V | -11.94 V |
|-5.00 | -5.04 V | -5.14 V | -5.04 V | -5.09 V |
|Fan 1 | 3750 RPM | 3708 RPM | 3792 RPM | 3754 RPM |
|Fan 2 | 0 RPM | 0 RPM | 0 RPM | 0 RPM |
|Fan 3 | 8881 RPM | 8653 RPM | 9121 RPM | 8856 RPM |
+-----------------------------+----------+----------+----------+----------+

Have you tried running at stock and seeing if this goes away?

Look through the Event Viewer's logs and see if there is an entry with source "Save Dump". If there is one for the time the computer randomly restarted, it will have BSOD info in the details. That might be of some help.

JigPu