E6400 Hit the Wall at 3.16GHz...Please Advise

[cadjock]

I first want to thank "Angry", "Raju" and the rest of you for helping to make this forum the best source for DFI overclocking info ! I was lost untill I found the "975 O'Clocking Mini Guide" that Raju started. Thank you so much for providing starting point info !!!

 

I am running the hardware listed in my SIG and have "Hit the Wall" at 3.16GHz and am not sure just how far I can "Push the Performance Envelope".

 

Here are my last working settings:

FSB 395 X 8 =3.16GHz

Memory settings 4-4-4-12, Memory speed = 533

PCIE CLOCK = 118

CPU VID OFFSET = 150.0

CPU VTT VOLTAGE = 1.35V

DRAM VOLT SETTING = 2.45V

NB CHIP VOLT SETTING = 1.75V

The other settings are per "975 O'Clocking Mini Guide".

 

TEMPS:

System 38C

CPU 45C

NB 42C

 

When I increase the FSB to 400 x 8 XP locks up on boot. My Bios settings remain and are net reset so I hit the reset button and make a change.

 

My last change was to increase CPU VID OFFSET = 162.5 but XP still locks up part way thru boot.

 

I am afraid to increase CPU VID OFFSET and the DRAM VOLT SET as I don't know if I have reached a limit. I am at the limit for the NB chip voltage and the CPU VTT Voltage.

 

 

<<< CAN SOMEONE PLEASE ADVISE ON A LIMIT FOR THESE SETTINGS ?? >>>

and or suggest alternate settings..............

 

Could a change to the memory settings get me a little further?? I've read where some advise to leave all settings on AUTO except set the Memory Speed = 533.

 

Any other direction would also be greatly appreciated! Gotta love these C2D's!!! 1 GHz over stock. I am so "Stoked" over this DFI/C2D combo! It's a huge change from my old P4-2.4Ghz.

 

Many Thanks in advance!

 

CADJOCK

[red930]

First thing you're going to want to do is flash to a newer bios, the latest greatly improves your max FSB. It's on DFI's official website.

 

Note that this fixes many of the issues that were needed for Raju's guide, a lot of the problems we found early on apparently have been taken care of so you might want to use more Auto settings with the newer bios.

[kingcarlos]

hmm maybe try up the vcore abit and set ur ram setting to 5-5-5-15

[Thasp]

a) Put that PCI-E clock down. Are you nuts? back to 100 for PCI-E and 33.3 for PCI.

 

B) Try 1.55v CPU.

 

c) Try lowest RAM divider possible. Yes, I'm serious, I can't even go over 2.6 GHz with RAM running over DDR800 on the 975 chipset, so use the DDR400 divider(if there is one), and try 440-450 FSB at 1.55v CPU.

 

Yes, you would be running your RAM below stock, but.. 3.6 GHz vs 3.1 GHz is so much greater a difference in real world performance than DDR800 vs DDR677.

[cadjock]

Thanks to the 3 of you for the suggestions!!!

 

Technodanvan: I am using the latest DFI Bios. I have a typo in the sig which I will correct.

 

Kingcarlos: I did increase VCOR and set the memory timings to your suggestion. I was able to advance to 400 X 8 = 3.2GHz. Thanks!

 

Thasp: I reduced the PCI-E clock to 100 and left all other settings the same but the computer wouldn't post. I was able to get it running again with a setting of 110.

 

After achieving 3.21GHz I though I'd take your advise, moving to the 400 divider. I left the settings the same and entered a 440 FSB on the 400 divider but the computer wouldn't post. Actually, something happened with XP and I am forced to reload from scratch.

 

Are my other settings acceptable with the 400 mem speed or am I forgetting to adjust something?

 

CADJOCK