Please help with my A7N8X issues

[rommelrommel]

Here are my specs:

Asus A7N8X non-deluxe V1.04
1002A Bios
Successful Vdd mod, set to 1.85V
5V mod
Two 256MB sticks Corsair PC3200C2
1700+ JIUHB 0251
SLK-800
Enermax 365VE

I'm running at 188 x 12.5, 2.35gHz

Here are my problems:

FSB's over mid 170's cause an inablility to cold boot.

FSB over 188 causes instablility in stress tests.

FSB over 193 results in no boot.

Note that these issues occur regardless of multiplier and/or ram settings, or even if I go back down to one module in any slot.

I know Asus doesn't guarantee these boards to work up around 200FSB, but it seems that I've got a bit of a dud compared to a lot of other people. The cold booting is really pissing me off.

The only thing I can think to do is cut some bridges on my 1700+ to get higher multipliers, but I don't really want to lose the nice benefits of high FSB's.

Thanks in advance for any help.

 

[Soulkeeper]

how are yur voltage rails doing at 2.3ghz ??

 

[ChampionAtTufshop]

what revision is the northbridge?
a2/a3?

i ahve the same board (non deluxe and all) an ive gone as high as 220fsb (not sure if its 100% stable tho heh...but crappy ram ahd to be run at 80% or lower lol)

(this was on same psu i think)

 

[rommelrommel]

Originally posted by: Soulkeeper
how are yur voltage rails doing at 2.3ghz ??

3.3V @ 3.42V +3.6%

5.0V @ 4.87V -2.6%

12V @ 11.98V -0.2%

Those should really be in spec, but the lower 5.0V line does concern me a bit.

 

[rommelrommel]

Originally posted by: ChampionAtTufshop
what revision is the northbridge?
a2/a3?

i ahve the same board (non deluxe and all) an ive gone as high as 220fsb (not sure if its 100% stable tho heh...but crappy ram ahd to be run at 80% or lower lol)

(this was on same psu i think)

How can I tell what revision the NB is?

 

[Assimilator1]

Your 5v reading is fine,assuming your bios is accurate ,to be sure you really need to get a multimeter to check them.

ChampionAtTufshop
How did you get you mbrd to boot with RAM at less than 100%? ,even with my FSB at 133MHz it still wont boot with RAM at 83%

rommelrommel
I assume you've tried those FSBs with the cpu multiplier low to eliminate that possibilty?

 

[ChampionAtTufshop]

Originally posted by: Assimilator1
ChampionAtTufshop
How did you get you mbrd to boot with RAM at less than 100%? ,even with my FSB at 133MHz it still wont boot with RAM at 83%

i just changed it and badda bing badda boom
...was it not supposed to happen like that or something lol??

(what i do is save changes, THEN exit and save...i dunno if it makes a diff lol)

if you have cpu at 133, ram is at like 110 (if 83%) and that SHOULD work....
what about the other percentages?

btw, im on bios 1002.A

 

[ChampionAtTufshop]

Originally posted by: rommelrommel

Originally posted by: ChampionAtTufshop
what revision is the northbridge?
a2/a3?

i ahve the same board (non deluxe and all) an ive gone as high as 220fsb (not sure if its 100% stable tho heh...but crappy ram ahd to be run at 80% or lower lol)

(this was on same psu i think)

How can I tell what revision the NB is?

take off NB heatsink and there will be a string of letters/numbers
look at last 2: either A2 or A3
I have A2 for the non deluxe and i just got a deluxe with A3...imma see how this oc's tmr or maybe later

 

[Assimilator1]

Like I said 83% doesn't work ,but I haven't tried the others yet ,maybe they will?

I never had any problems just saving & exiting................yet!

 

[mechBgon]

Did you lock the AGP bus to 66MHz?

 

[Assimilator1]

Yep

Atm RAM/FSB is 178MHz works fine

 

[Jojo1971]

I know Asus doesn't guarantee these boards to work up around 200FSB

OC is a gamble what do you expect?

 

[ChampionAtTufshop]

Originally posted by: Jojo1971

I know Asus doesn't guarantee these boards to work up around 200FSB

OC is a gamble what do you expect?

both ive had have gone to 200fsb fine

 

[Jojo1971]

good for you