Seems my P5k-P is having some issues breaking 440+FSB. So far I've tried 3 different 2Gb kits of PC2 6400 RAM, Corsair XMS26400C4, Crucial Ballistix PC26400C4 (single sided) and Crucial Ballistix PC26400C4 older style double-sided w/ Micron chips.
All 3 sets did 435 and their respective voltages (2.1 Corsair, 2.2 Crucial) at 5-5-5-18 T2, orthos, prime, memtest stable 24hrs. Tried raising the FSB to 436-440Mhz and it won't even post, no beep, nothing. Tried raising voltage to 2.2 Corsair and 2.3 Crucial still no boot. Thought it might be an FSB hole so I tried 450,460 and 475 FSB and still, no POST.
Can this be PC6400 hitting their max OC? Because thats one hell of a coincidence that all 3 sets hit the exact same FSB wall. So I'm thinking its the MB.
BIOS Settings as follows:
Ai Overclock - Manual
CPU Ratio - Manual (6)
FSB Strap - 333
FSB Freq - 340
PCIE Freq - 101
DRAM Freq - 881
DRAM Cmd Rate - T2 (5-5-5-18) Rest are set to AUTO
DRAM Static Read Control - Enabled
Transaction Booster - Disabled
-- Relax Lvl (0)
Clock Over-Charge Mode - 0.80v
CPU Spread Spectrum - Disabled
PCED Spread Spectrum - Disabled
CPU Voltage - 1.4750
CPU vRef - 0.63x
CPU V Damper - Enabled
CPU PLL - 1.50
DRAM V- 2.1/2.2
FSB Term. Voltage - 1.50
NB Voltage - 1.55
NB Ref Voltage - 0.67x
SB Voltage - 1.05
Anyone got any ideas or suggestions? Could be a dud board?



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, Stock Gpu
. If you want a quick test Jump in and see if it runs 3.6 on 400x9 with memory 1:1 using the other current settings.. Try it with vcore 1.45v for starters and work down if stable. You should be okay on temps for that with the Ultra 120 unless its a hotdog of a chip.




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