Overclocking Help! - GA-P35-DS3R - E6750

[BTK17]

I have

GIGABYTE GA-P35-DS3R (F6 BIOS)
E6750 w/ Scythe Infinity HSF
2x1GB Crucial Ballastix (MicronD9GMH)
8800GTS 320MB Superclocked
CorsairHX 520W
Vista Ultimate

I am orthos stable (15 hours) @ 413x8 = 3.3 GHz
RAM @ 1:1 4-4-4-12 413 MHz - 2T - 1.8 VDimm memtest86 stable

I have tested the RAM up to 500 mhz 4-4-4-12 with increased VDimm
CPU Vcore is 1.36 in BIOS as opposed to 1.35 stock

Load is around 35-40C according to core temp 0.95.4 (everest/intel tat/speedfan show like 15c load.......) all i know is in BIOS in pc health cpu temp is always around 15-23C and one time 5c when it was cold.

Even @ 3.4 GHz orthos fails after 10-15 min even with 1.4 Vcore

the ram is tested stable so I assume it's something to do with chipset voltages? What should I increase? I have done up to 500fsb without any voltage changed but have not tried higher than 500fsb. I know I should be able to get higher stable clocks right.

I have cpu-z valid 3.6 but not stable

and is there a 1T/2T settings in BIOS for RAM? ( I am pressing CTRL+F1)

E6750 batch is L726A845 and google shows no results for it......

 

[BTK17]

bump

 

[BillParrish]

the ram is tested stable so I assume it's something to do with chipset voltages? What should I increase?

You can play with the FSB voltage but I have not seen it ever reported to do much to help with CPU overclock. You should have the MCH set at +.1V for stability anyway. If you memory tested ok (I assume several passes of memtest) at 500+ MHz increasing the MCH any more would just result in unwanted heat. No point in increasing voltage to the Memory Controller Hub if memory is not your issue.

I have done up to 500fsb without any voltage changed but have not tried higher than 500fsb. I know I should be able to get higher stable clocks right.

Maybe you can or maybe thats it for that cpu. Lossen the timings to 5 5 5 15 and try a Vcore of 1.425 volts and try 3.4 again and try raising the FSB voltage a notch at a time for the 3 next values available over stock default. , if it wont do it, it wont do it.

and is there a 1T/2T settings in BIOS for RAM? ( I am pressing CTRL+F1)

No not on this board, in general Intel chipsets do not run 1T. There are a few boards that try to use 1T at just certain memory mulitplier settings, but not Gigabytes or 98% of other Intel boards.

 

[learners permit]

Try ram at 2.0 volts no extra volts anywhere else as it's simply not necessary unless your heating your home with it. I tried .1 extra to the mch and it lowered my ram speed stability.
[url=http://img2.freeimagehosting.net/image.php?ed2daf9325.jpg][/URL]
^These timings might help you with your ram. tRD (^performance level) in bios must be raised to get higher stable FSB. I would start at seven and see how it goes. 6 is awesome but more difficult on my board. Yours might be able to do it as your chipset is probably binned a bit higher than mine. Keep me posted on your progress.

 

[learners permit]

Try ram at 2.0 volts no extra volts anywhere else as it's simply not necessary unless your heating your home with it. I tried .1 extra to the mch and it lowered my ram speed stability.
[url=http://img2.freeimagehosting.net/image.php?ed2daf9325.jpg][/URL]
^These timings might help you with your ram. tRD (^performance level) in bios must be raised to get higher stable FSB. I would start at seven and see how it goes. 6 is awesome but more difficult on my board. Yours might be able to do it as your chipset is probably binned a bit higher than mine. Keep me posted on your progress.