Numbers are not matching up for my OC

Currently I have a GA-p35-DS3L rev1.0 and a E2180 4x1gig HP Patriot mem (4-4-4-12-800Mhz). This is where it gets funky. I currently have my FSB set to 356, PCI-E is locked on 100 (dont see a setting for PCI freq) and I do have my DDR2 Voltage to +0.4 (2.2v its rated for) I also have my CPU Vcore set to 1.5V in BIOS and I turned off all power saving features (C1E looks like the only one I have on this board). Ok so when I open up CPU-Z version 1.41 I get a vcore of 1.472V. That isnt 1.5. Also even more interesting is when I start prime95 to do small FFT's stress test my log says CPU speed 3560.01, CPU-Z says 3.2Ghz. not 3.56Ghz. Also I ran that prime95 test and about 30 seconds later I got a blue screen and my temps quickly rose to 71C. So why is everything not matching up? I know they said CPU-Z voltage for intel- core two CPU was off previous to 1.40 and below but I have 1.41. And why does my CPU read 3.56Ghz in prime 95. Even MORE interesting is according to dxdiag I have a E2180 2.0Ghz ~ 3.6Ghz. This is just bizarre. I have all auto settings off to my knowledge so Im pretty sure nothing is auto bumping voltage/frequenices. Any hints/tips would be great.


***Update*** also when I go to 'system' Vista reports my E2180 as 3.56Ghz. What the hell is going on? It doesnt make sense, Im gonna drop my FSB to 333 and see if it reads as 3.36, hench it looks like Vista/other is seeing my FSB as 200Mhz faster.

I settled on a pretty decent speed. I set my FSB to 340 DDR divider to 2.4 bringing my total memory speed to 816Mhz, currently have 2.2V on the mem and I set 1.5V on the CPUcore. Played Hellgate:London for just over an hour while running coretemp during the entire session. Naturally I maxed out everything except AA, I just set that to medium. Afterwords I opened up excel and pasted the results from the coretemp log file. I then used sum average and my average temps were 60C. Strange thing is I the program crashed as well as another game I played when I went to start them. Ran it again afterwords and worked just fine. Wierd. But seems pretty stable otherwise. How long do you guys run prime95 and at what temp do you say enough is enough?