Overclocking Problem

[wdEvA]

hey guys, just got my new setup and having some problems overclocking

Hardware:
E6750
MSI P35-Neo2-FR
2x1gb Crucial Ballistix DDR800


I'm able to get it to run at 3.4Ghz, 1:1

Here comes the problem, my system just refuses to boot up when the rams are running at DDR 900 which it's more than capable of doing.

Bios Settings:
Execute Bit Support: Disabled
Set Limit CPUID Max Val to 3 - Disabled
D.O.T Control - Disabled
Intel EIST - Disabled

CPU FSB: 450
Mulltiplier: 8
Ram Timing: 5-5-5-12
Ratio: 1:1

CPU vCore: 1.3v
Mem Voltage: 2.2v
VTT FSB Voltage: 1.3v
NB Voltage: 1.45v (It auto change to 1.45 when i set FSB at 450)
SB I/O Power: 1.8v (It auto change to 1.8v when i set FSB at 450)
SB Core: 1.05v

To make sure that it's not my cpu hitting the wall or insufficient vcore,
i've tried lowering the fsb to 300+ and stepup the ratio for the ram till it hits DDR 900. but i stil cant boot with tt settings.

Most of the time, i just boot, the nothing comes out and it restarts.
I got it to the part where it detects my USB configurations, but it'll just hang there..

Anyone can help?

 

[wdEvA]

yeap, running it at recommended voltages, 1.8v for DDR800, 2.2v for DDR1000, so i guess at DDR900, 2.2v will be fine?

using 2x1gb only

what u mean by unlink it from FSB?

 

[wdEvA]

i'm using a E6750 there no multiplier 9..

 

[wdEvA]

hmm but this rams can go up till DDR1000, are there any settings that i can change that may be wrong?

 

[wdEvA]

could it be a faulty memory controller?

i tried setting fsb at 360, so it wont be a cpu hitting the wall problem,
ram ratio to 1:1.25 such that the ram runs at DDR 900, and set memory voltage to 2.2 as recommended by Crucial for speed at DDR1000.