Intel Core 2 Duo E8200 OC

Hello, I'm a new OC'er and i wanted to know if i could oc a bit further with my intel stock cooler before i change it to a better one.
here are the CPU-Z and SpeedFan screenshots.
http://i274.photobucket.com/albums [...] /CPU-Z.jpg
http://i274.photobucket.com/albums [...] eedFan.jpg

Well, im currently OC'ing my CPU,RAM and Graphics Card(with rivatuner).
I cant change a lot of things in my bios, so here are the current levels:
@JumperFree Configuration: CPU Frequency is 350 [100min - 450max]
DRAM Frequency is DDR2-875Mhz(max) [DDR2-525Mhz min.]
PCI Express Frequency is auto.

@CPU Configuration: CPU ratio adjustment is manual, Ratio CMOS Setting is set to 8(max).

@Hardware Monitor the CPU Temp. is 38C, Vcore Voltage 1.184V/1.192V [which i can only change to "Ingored"]

I would like to OC more than this but i dont know until which level it's safe, and what settings to change so that the system stays stable[if it is]. When I reboot it has a delay..it shutdown's and takes at least 2 seconds to start up again. dunno if its voltage issues, cos if it is i dont know where to change it @ bios.
btw, at speedfan's Core temps, idle @ 47/48C, and while playing/rendering video from after effects it reaches 65/66C.

@ the end of the BIOS screen it says "v02.53 bla bla American Megatrends,... " just so u know, cos @ CPU-Z it says a different version.

My Rig:
PowerSupply: 500w Colors atx.
PC Case: ThermalTake Soprano
CPU: Intel core 2 duo E8200 2.66Ghz @2.80Ghz 6MB L2 cache 1333Mhz FSB
Mainboard: ASUS P5GC
RAM: 4GB Kingston DDR2 667Mhz
HD: Samsung 500GB SATA
DVDdrive: Samsung black.
Monitor: DeLL
Graphiccard: ASUS nVidia GeForce 9600GT 512MB GDDR3 PCI.E 2.0
Soundcard: OEM Creative X-Fi - XtremeMusic - 24-bit - 192 kHz - 109 dB SNR - 7.1 channel surround
Keyboard: trust media keyboard
Mouse: razer lachesis phantom white

Done, @ Real Temp Core temps are both 40C idle. Distance to TJ Max 54.
while playing, it reached 56C. cheers.

4.0Ghz with a 500MHZ FSB on a Quad CPU?? You have to remember he has a X8 Mult on the CPU, the Q6600 has a X9...400X9=3600mhz...400x8=3200mhz. It makes quite a difference.

The CPU has a multiplier of 8 so you'll need a FSB of 375 to hit 3.0Ghz, 8 x 375 = 3000. I don't like to see temps above 60C, the temps are little high at 2.8 so I would recommend better cooling(better cooling doesn't mean pricey cooling) before moving further too much. With a cool CPU you'll hit the limits of the MB and RAM before you hit the peak of the CPU.

I have 2 case fans (a 120mm and an 80mm) and use this cooler and some Arctic Silver 5 for my E8200: http://www.newegg.com/Product/Prod [...] 6835150082

I'm running at 3.6 on my rig with a FSB of 450 ~ 39C Idle and 55C load.