[Abit NF-M2 6150] - Cannot get FSB above 205

[DieCommie]

Hello,
This is my first foray into overclocking and I an not really getting anywhere...

The equipment:

MOBO: Abit NF-M2 w/ GeForce 6150
CPU: AMD 3800+ X2 (AM2, 89watt)
RAM: Patriot PC2-6400 800MHz, 2X1GB, 4-4-4-12, 2.2V
PSU: 450 Watt FSP

My problem is, as the title says, I just cant get my FSB above 205. At 205 it boots just fine with no adjustments to anything else. At 206 however, I get this in the POST screen
Warning! Now system is in safe mode
Please re-setting CPU Frequency in the CMOS setup[sic].
It then allows me to boot at 200 (the default) or go into the BIOS.

I have tried (with the FSB at 206)-
- upping the CPU voltage to 1.375, 1.400, 1.425 and it still wont let me boot.
- Lowering the multiplier from 10x to 9x and below on to 5x
- Changing the RAM timings. The default my board gives is 5-5-5-16, 1.8V. I adjusted it to the RAM's specification of 4-4-4-12, 2.2V. Nothing. I also tried running the RAM at 667 and 533.
- I even tried replacing the button battery

What should I try next!?!

Note: I dont think this mobo has what I read is a 'memory divider'... Is a memory divider the same as lowering the memory to 667 etc?

 

[corpsejockey]

Divider is the same as dropping the mem cloclk to 667.
Have you tried dropping the htt multipliers to 4x?

 

[DieCommie]

Thx for the reply.

I understand the RAM thing now and have it at 667. I also now have what you call the HTT multiplier at 3X, it didnt work well at 4X (my bios call it someting like K8 <-->NB).

I was confusing the CPU multiplier and HTT multiplier. I now realize they are two separate things and have adjusted them both.

So I am cooking along and testing for stability with a 280 fsb. Im am very pleased

Now I wonder if I should change the mobs ram timings from 5-5-5-16 to 4-4-4-12 that the package says. Also what is the difference between somthing known as 1t and 2t?

Thx!

 

[funnyperson1]

Well you will probably have to raise voltage to hit the 4-4-4 timings that you ram is rated for at 800mhz, with the 667 divider, you are probably running around 900+ mhz at 10x280.

Also the 1T/2T setting is the command rate setting, 1T is faster, 2T is slower but allows you to overclock further.