I just installed my E8500 and hit 4.0GHz on my 1st try, but jumped it back down to 3.8GHz due to high CPU temps during game play. My E8500 is pretty much the exact same CPU as your E8400 except with a 9.5 Multiplier rather than the 9 Multiplier on your E8400 at which case is the exact same target you are trying to hit:
E8500 @ 9.5 Multiplier X FSB 400MHz(1600MHz) = 3800MHz(3.8GHz)
E8400 @ 9.0 Multiplier X FSB 400MHz(1600MHz) = 3600MHz(3.6GHz)
I'm sharing this information only to varify your findings in that you should very well be able to hit your target 3.6GHz with that CPU.
This is what you should need:
- Excellent Cooling for your MB/Chipset
Please see my "POST #5260" on this thread for cooling tips
- Excellent Cooling for your CPU
Tons of fair options here under $40
- Excellent Thermal Paste Properly Installed
Always use Arctic Silver 5 on your CPU
- Updated BIOS
1104 is working great for me so far
- Follow Robilar's Guidlines per "POST #1" on this Thread
- Top of the Line RAM
This could very well be your problem. Although your memory is high end, it is not SLI Certified, or SLI Ready for that matter. Try only running one of those 8800 graphics cards for a few test runs??? Honestly, I don't know if this is your problem, but I would google into it if I were you. Especially if everything else is checking out in this little list. I am using 4GB Corsair Dominator PC2 8500. It seems to do okay at around 1100MHz with no Fan. How far are you pushing your OCZ Reapers? 800MHz is the memory standard for that board. Try clocking them back down to 800MHz while testing your FSB/CPU. Then worry about maxing out your memory frequency/speed and timings.
Hope this helps. Maybe your board is getting tired?
Originally Posted by Cobra652
Pls help me somebody!
I know,this is p5n32-e topic,but bios,and MB is same,with little difference..
My overlocking is fail..
Cant reach 3.6ghz...I'll try to raise fsb (bus speed to 1600-->fsb400),like people say-->easy to 3.6ghz...
But i cant.
Disabled anything (spectrums,etcetc) in bios,try to raise voltages...Nothing.
I cant reach 3.6 ghz.
The system runs stable at 3.49 ghz (All voltages auto,bus 1550),but if i raise the bus speed to 1560 i need to raise all voltages.
Busspeed 1560 maybe stable,but if i raise it to 1570 i cant get stable oc...I'll try raising anything,trying other peoples bios setting...Nothing..
Bus 1600 mhz (400 fsb)
Vcore : 1.35 ('ill try to raise it,no help)
1.2v ht: 1.35
Nb: 1.4 (try to lower adn raising it,no help)
Vtt: 1.35 (lower/raise..nohelp..)
Thx,and sorry for bad english