no overclock on dfi nf4 sli-d expert

[omegaman]

HI,

just built my system, i cannot get any overclock ,soon as i alter the bios fsb the system will not boot....any ideas!!!!!

amd x2 4800

mach II regasses to 507

ocz el ddr pc-4000 gold vx

xfx 7800 gtx 216 in sli

2 x raptors

on my dfi nf4 sli-dr i could get 12 x 250

 

[cheap]

what slots do you have your ram in? try changing the slots! also which bios are you using?

 

[omegaman]

using orange slots,using 704-2bt bios,turned of throttling, now getting 240 x 12 ....

any more suggestions will be helpful

thanks

 

[scorchio]

It would be helpful if you could list down all your bios settings that way we can see what timings you are runing and volts you are useing!

And what power supply.Isn't that bios for the non expert board?

 

[omegaman]

power supply is seasonic s12 600 will let youy have the bios asap

 

[scorchio]

This is the latest bios for the expert you might want to try this first.

http://eu.dfi.com.tw/Support/Download/bios_download_us.jsp?PRODUCT_ID=3872&CATEGORY_TYPE=LP&STATUS_FLAG=A&SITE=UK

Also something i do is run a bare system ie 1 card and 1 stick of ram the shouldnt be any power issues.

The ram should take 3.6v safely and the cpu should be fine at 1.6-1.65v.try setting the other ram timings to auto at first you can allways tweak a bit after.

And keep useing the orange slots.

 

[maverik-sg1]

as scorchio says set ram to auto all the way down the settings and add a divider in make sure you can get the CPU to overclock (without worrying about the ram).

The problem most people have is that this board does NOT overclock the same as the old non expert unit and I have found it to be very twitchey.

That BIOS you are using is okay but the new BIOS is better.

Also go to OCZ support forums as they post some BIOS setting to use there with VX ram.

 

[omegaman]

at last ...3000 (250 x 12), the board does not like 1.5v, so i used 1.4 v plus he 109% option and everything is okay now,will keep pushing to see how far it will go

 

[scorchio]

So what was the problem in the end matey and by the way no problem

 

[omegaman]

my board would not boot with cpu voltage at 1.55 , soon as i changed it to 1.4v with 109% everything ran smoothly.Now to get the water cooling on the graphic cards set up.

Thanks to everyone for the advice...will try benching now ....keep you informed

 

[scorchio]

You can push it to 1.65v for max overclock.

 

[omegaman]

got fsb to 3120 (12 x 260),voltage at 1.60 and all stable,pcmark 2005 at 14345,graphic cards at 490/1300 will start to overclock these now, whats the best coolbits or riva tuner?

Thanks

 

[scorchio]

Riva in my opinion make sure you adjust your LOD it will improve your scores!

 

[maverik-sg1]

Riva is good too as you can (in teh power user settings) disbale the clock test (in Nvidia oiverclocking and global overclocking sections) that throttles your overclocks and find your own overclock limits.

256MB GTX's are good for 500/1400 or higher.

Cheers

Mav