Abit Fatal1ty AN8, that great for OC?

[Amblin]

Hi!
I have postboned all my replies and threads until I was able to get ahold of my new gear. I´ve hung around on both this one and some Swedish sites that involves around OC to read up as much as I can.

I just got my gear the other day that consists of:

Abit Fatal1ty AN8
A64 3000+ Venice
2x512 Twinmos BH-5
Sonata 2 chassi

I got everything working today and I was so pumped up to start overclocking a bit. The first thing I wanted to do was to smack a lock on PCI so my drives won´t crash when I clock. I also wanted to set the memorydividers to around 200mhz.

But this is when it all stopped. I have checked SEVERAL times around the bios to actually find the place where you lock the PCI busses and set the memorydivider but I haven´t found anything.

I was looking around on the net for some hints what to do and I found a screenshot of a user displaying his choosable BIOS settings with the Fatal1ty AA8XE: http://techreport.com/reviews/2005q1...-overclock.gif
My choices in the BIOS looks nothing like that.

I have upgraded to the latest bios but now I´m really stuck. Extremely embarrassing to get a bump right here in the start but I don´t really know what to do. If you are a Fatal1ty AN8 users then please guide me!

[cptwhite_uk]

you possibly need to set something to manual instead of auto or something, it would bring up a lot of other options normally hidden...

cpu frequency to 'user define' for example.

remember to tone down the HTT from 1000 to 800 (for upto 250mhz FSB) or 600 (for upto 333mhz FSB)

HTT is FSB x multiplayer

at 1000 multiplyer is 5
at 800 multiplayer is 4
at 600 multiplayer is 3

you want to keep the HTT at 1000, above this can crash the system - that's how i understand it from tests with my Asus A8V anyway.

[Dark Horse]

I was looking around on the net for some hints what to do and I found a screenshot of a user displaying his choosable BIOS settings with the Fatal1ty AA8XE: http://techreport.com/reviews/2005q1...-overclock.gif
My choices in the BIOS looks nothing like that.

I

The AA8XE is an intel board so thats probably why it doesn't look similar...

[Amblin]

yeah I saw that but I just meant that it´s got a nice setup there to configure your memorydivider.

I guess that I just can set the PCI on manual and set it to 100. That way it won´t dynamically jump around (I hope).

[zawer612]

The dividers can be set via the DRAM configuration page in the bios, using the DRAM Clock setting. The dividers are as follows;

DDR200 is 1:2
DDR266 is 2:3
DDR333 is 5:6
DDR400 is 1:1

(ratio is DDR FSB:CPU FSB)

i.e- to run the cpu fsb at 240mhz without overclocking the ram (200mhz) you'll need to set the DRAM Clock to DDR333 (5:6).

HTH

[BUFF]

The dividers can be set via the DRAM configuration page in the bios, using the DRAM Clock setting. The dividers are as follows;

DDR200 is 1:2
DDR266 is 2:3
DDR333 is 5:6
DDR400 is 1:1

http://www.xbitlabs.com/images/mainb...an8/bios-5.jpg

With a Venice or San Diego he will also have some others
DDR433
DDR466
DDR500

The PCI bus should be locked by default on nF4 but you can vary the PCI-E clock if you want.

Seeing as you have BH-5 I hope that is a Fatality SLI (3.55Vdimm) otherwise you only have 2.8V Vdimm to play with.