2.8c m0 with P4S800d-e deluxe

[SWT4ai]

I need some suggestions on how to overclock this sucker to 3.5ghz. The highest I got it to was 3.22ghz.
MY rig:

p4 2.8c sl6z5 m0 stepping
asus P4S800d-e deluxe
2x512 HyperX PC4000 in dual channel mode
Cooler Master Aero 4 with arctic silver 5
ATI Radeon 9600xt
2x180gb ibm deskstar on raid 0

The temperatures seem fine to me. Ranging from 29c to 38c for the processor and 30c to 36c for the mobo.
Will changing the passive cooling for the north bridge to a hsf help at all? I tried raising the vcore up to 1.7v. I even tried overclocking another 2.8c processor with the D1 stepping, but still got the same results.....
Please help.

 

[SWT4ai]

I forgot to add that I am using an Antec 450 watt power supply....

 

[myocardia]

You're gonna have to buy a motherboard with an Intel chipset to hit 3.5ghz. But hey, at least you can hit ~3.25 with what you have! That's higher than I would expect for that chipset.

 

[smahoney]

I run my M0 at 3.5GHz without issue on an Abit IC7-G. I tried with an Alpha before going to H2o, but it still ran at 3.5 just a bit warmer. CPU runs at 1.55V at 250FSB.

 

[myocardia]

Originally posted by: smahoney
I run my M0 at 3.5GHz without issue on an Abit IC7-G. I tried with an Alpha before going to H2o, but it still ran at 3.5 just a bit warmer. CPU runs at 1.55V at 250FSB.

An IC7 has not only an Intel chipset, but the best Intel chipset, the 875. His motherboard has a SiS 655TX chipset, which doesn't even have a pci lock.

 

[tallman45]

The p4s800 that you are using does not OC well, as others have pointed out. You are actually lucky to get your 2.8 as high as you did. The 655tx is an outstanding value over say a p4c800 but will never overclock to the levels that an 875 will. But for $70 less than a P4c800 you can step up to either a 3.0 or even a 3.2 proc and be in the same price point as a p4c800 and a 2.8c and not worry about oc'ing so much

 

[SWT4ai]

Did I just get a crap cpu??? I've seen reviews where people overclocked past 250 fsb on a 2.8c processor. Maybe I should just wait until asus updates the bios for the board....

 

[apoppin]

Originally posted by: SWT4ai
Did I just get a crap cpu??? I've seen reviews where people overclocked past 250 fsb on a 2.8c processor. Maybe I should just wait until asus updates the bios for the board....

No, it's your MB.

REread the posts above mine (again)

 

[Acanthus]

Originally posted by: apoppin

Originally posted by: SWT4ai
Did I just get a crap cpu??? I've seen reviews where people overclocked past 250 fsb on a 2.8c processor. Maybe I should just wait until asus updates the bios for the board....

No, it's your MB.

REread the posts above mine (again)

 

[SWT4ai]

I guess this mobo is going to be sold on ebay....

 

[MichaelZ]

You're doing the right thing SIS based motherboards are still the entry level chipsets even though they're better engineered than a few years ago. Overclocking them is still a weakpoint and the memory bandwidth rather low compared to intel solutions.

2 years ago I decided to give SIS a go with their latest 645 chipset which, at the time was apparently: 'great value for money with performance to match'. What a load of trash. Right now it's the same story, 655FX and 655TX - great value chipsets to rival intel. I won't fall for that again...

Not to mention the OC I got on that SIS645 board was a ground breaking 10mhz or so on top of the stock 133FSB for P4 northwood 533 models. Bringing my 2.4B to an amazing... 2.5... WOW

 

[koolkase]

Nah ... the SIS TX chipset is pretty good and ASUS boards are as well built as any. I've had a 3.0c running stably @3.6 for a month now. The December Anand review of this board just prior to its release had it running around 265 fsb and Hardcop had it a little beyond 250. I've never been able to manage this, however, and I haven't seen any reports except those in review articles beyond 240 fsb.

However, in reading hundreds of posts about the board, several have noted BIOS issues that are keeping the commercial release from hitting the high notes that the Anand reviewer got. I've considered returning the board for the ASUS p4c800, but I'm going to hold out a while longer and see if there is a BIOS fix. Some recent threads by more sophisticated oc'ers than me have noted that the board has much more potential if known memory timing issues are resolved by future BIOS releases.