E8400 is a 9.0 multiplier, right?
With DDR2-800 ram, you can set the FSB at 400 and have a pretty fast computer. Of course if you tinker with it you might get that ram to go a little higher, but 3.6 is fast enough for just about anything. You didn't mention your cooler, that will be a real critical part of the overclock.
i have the same EXACT items you posted above, i have my CPU OC'd to 4.0 with just an FSB increase to 445 and upped the RAM to 891 to match to a 1:1 ratio, also reduced the timings from 5-5-5-15 to 4-4-4-12. Give it a shot, hopefully you are as lucky as me.
PS. that RAM will NOT limit your OC, it's decent overclocking RAM...
Edit: i have the ASUS mobo going now, but i had the EXACT same OC on my Gigabyte Mobo as well, so no worries there... i just liked the ASUS options better...
Well DDR2 gets it's speed from FSB x 2(assuming 1:1 ratio). So max FSB with DDR2-800 without overclocking the RAM would be 400 FSB. If you keep increasing the FSB above 400 at some point you will need to mess with voltage and/or memory timings. Could be 420, 435, 450 and its basically luck of the draw when it comes to overclocking. No way to tell how far that RAM can go.
With DDR2-1066 you could go to a FSB of 533 without having to worry about pushing the RAM out of spec. So you can hit DDR2-900, 1000 with just leaving the RAM timings and voltage at stock. Seems like less work to me.
All he (Calinkula) stating (like I tried to) is the E8400 is capable of higher OC's than the DDR2-800 Ram can (usually) handle. You may be able to get to 4.0 Ghz without a problem and be happy there, thus the Ram WILL NOT hold you back. We were just trying to let you know that OCing DDR2-800 ram to 900-1000 is possible on some but isn't the norm.
As far as the Ram goes, it will become unstable (reboot computer, BSOD) when you have exceeded what it likes, then you just have to adjust.
Well, there is no NORMAL voltage or temperature per se.
Your Ram and cpu will DEFAULT to a given value that should give you a starting point to work from.
What you want to do is OC, test and monitor temps as you go along. You can stick to Intel's max temp and voltage recommendations (I would) or not, it's up to you. Like I mentioned the E8400 (E0) is very frugal when it comes to voltage, unless you want 4.2-4.5 Ghz OC, then it will take a jump in voltage.
Cpu-z will almost always show a lower voltage than your BIOS, this is normal. It's called vdrop, and under load it will most likely drop some more, vdroop. After I did the pencil mod on my Asus P35 mobo, I eliminated both, but that's not common.
It would probably be a good idea to take a look at the OCing guide here and GOOGLE it for others. They can be very helpfull.
When you get it going let us know what happens. Good Luck.
I have everything up and running. I have overclocked it to 3.6 Ghz (400 FSB X 9) with RAM at 800 (4-4-4-12).
I play Crysis at 1900x1080 with 8x antialiasing and vsync with no problem. The core tempratures are at 40 idle and 56 maximum load (10 minutes with Prime95). Is this temprature good?
You're good at where you are. You might push it a little more, with temperatures being your limiting factor, but doubt if you could tell the difference in actual use. The E8400 at 3.6GHz is a darned powerful machine.