2.4C (SL6Z3) Overclock issues

[stealthrs]

Well guys, My computer expert friend TyphooN and I tried to figure this out, but we really can't....

Here's my setup...
Abit AI7 Mobo
P4 2.4 SL6Z3 @ 1.675V
SP-94 Heatsink w/ Artic Silver
92mm Tornado fan (lowest speed)
120mm fans at front and back of the case (Super LanBoy case)
Kingston 2x256mb PC3200 BH5 Ram stable till ~280mhz @ 3.2V (Typhoon tested)
460W Enermax

A previous owner of my SL6Z3 had it running at 3.36GHz @ 1.65V aircooled... I on the other hand, can't keep it stable at 3180MHz (265MHz FSB).. Using a 5:4 divider and ram is currently at 3.2 and that's overkill for the speed it's runniing at right now...

48 degrees under load when torturing by Prime95 @1.675...

Does anyone have the slightest clue as to why I can't get crap when trying to overclock my 2.4's? I've tried two SL6WF's and only got to be stable @ 3ghz... Now this is my third 2.4 I can't get CRAP out of, it's m0 stepping and everything....


WHO HAS A CLUE WHY I CAN'T OC WORTH CRAP?!

 

[AristoV300]

Intel's run best at 1:1. You need to get some PC-4400 memory. 2.4's usually hit 3.2's on stock vcore of 1.55. Alot of memory don't run well on the dividers, so I would think that is your problem.

 

[Duvie]

Originally posted by: AristoV300
Intel's run best at 1:1. You need to get some PC-4400 memory. 2.4's usually hit 3.2's on stock vcore of 1.55. Alot of memory don't run well on the dividers, so I would think that is your problem.

Actually as an ex owner of abit mobos i can tell you ram modules are a big thing.....My IC7 would not do 5:4 ratio after 255fsb no matter the stick of ram I tried and eventhough I had ran higher ram speeds. I could get 3:2 to work just fine and got the board all the way to 292fsb...

I would make sure you raise the vagp up to 1.6 or greater as it has been known with those boards to control the vcore for the northbridge chipset...

Also look at that chipset. Apply some AS to that and maybe a more active cooler may help. There is no temperature sensor for that chip no matter what ppl have told you. So you have no clue if it is too hot...

 

[Thor86]

What are your temperatures? Try relaxing the memory timings as well to find your max cpu/fsb overclocks first.

 

[stealthrs]

well... lemme mess with the dividers first... i do have temperature sensors though... Under full load for about 30 mins, I can get up to 49 degrees.

My ram is test to be stable till 284 though... shouldn't that mean that my timings are fine at 2-2-2-5?

I have AS applied.

My friend TyphooN who helped me install it is going to give me a new motherboard to try out... a Asus P4P.. We'll swap to see how it goes.. We just need to mod it some before we try anything

 

[stealthrs]

3:2 didn't help out ;(

 

[BonzaiDuck]

I tend to agree with Aristo. My memory modules are more modest than his -- at DDR500 "Gold".

Much of what I've read tends to lead me to the same conclusion, and I've had better experiences with both my 2.4C and my 3.0C. As to the limitations on my OC'ing, I have a power-supply that is pooping out under load on the 12V rail, and I await a replacement. I expect to get at least a stable 25% over-clock at the stock timings. I've had a "viable" setting at 30%, but PRIME95 revealed errors under load. That doesn't mean I can't loosen them to go higher and still maintain a 1:1 divider. But for now, no more boasting and no more attempts until the PSU swaps out for something with cleaner more stable power . . .

 

[Duvie]

Originally posted by: stealthrs
well... lemme mess with the dividers first... i do have temperature sensors though... Under full load for about 30 mins, I can get up to 49 degrees.

My ram is test to be stable till 284 though... shouldn't that mean that my timings are fine at 2-2-2-5?

I have AS applied.

My friend TyphooN who helped me install it is going to give me a new motherboard to try out... a Asus P4P.. We'll swap to see how it goes.. We just need to mod it some before we try anything

But do you have a a thermal sensor on the NB chipset??? There is not board sensor there so it would have to be your own....

 

[stealthrs]

No, I guess not on the Northbridge...

MBM5 reads my proc temps though