The Maximus Formula Thread - Help/OCing/Guide/Rampage conversion

[aussie-revhead]

OK , benching now with 1006 but it hasnt helped my clocks , Im still stuck at 400mhz max.

Hopefully ram will fix this tomorrow .

[beard]

OK , benching now with 1006 but it hasnt helped my clocks , Im still stuck at 400mhz max.

Same here. Can't get 450 stable.

EDIT: Rampage bios (0308) is still the best one. With identical settings, (manual voltage, also cpugtlref is same) at 447x8, MF1006 couldn't even load windows but RF0308 is nearly occt stable (30min but it tells something).

[ChaosMinionX]

So seems that fix for 45nm clocking on x38/48 is FUD?

[panfist]

So seems that fix for 45nm clocking on x38/48 is FUD?

I'm trying to figure out what you mean...but my head just sploded.

[ChaosMinionX]

I'm trying to figure out what you mean...but my head just sploded.

Overclocking limitations of X38/48 chipsets with 45nm Penryn chips (X3350, Q9450) especially of the Asus variety have a really hard time breaking 440FSB.

It was said that Asus was working on this issue according to a Dutch forum, and someone who had contacted Asus BIOS Engineers to figure out the problem.

Nothing has been seen of this since about 2 weeks ago.

[panfist]

Overclocking limitations of X38/48 chipsets with 45nm Penryn chips (X3350, Q9450) especially of the Asus variety have a really hard time breaking 440FSB.

My FSB has no problem breaking 440MHz, but my E8400 isn't a very good one because past 3.4 or 3.5GHz, it needs 1.36V or more to stay stable...which is more than I want to feed it 24/7. If they do release a BIOS that let's me drop my vcore that would be awesome, but I'm pretty happy with 3.4GHz @ 1.3Vcore.

Anyway I just got my GSkill 2x2GB PC8000 kit and I'm beginning to mess around. It would not boot at 800MHz 4-4-4-12 2.1V, but it will at 2.14V. That's in the motherboard, I'm going to measure with a multimeter tomorrow because I don't want to feed too much past the rated 2.1V. The bad performance at 800MHz leads me to believe that maybe it won't boot at the rated 5-5-5-15 1000MHz, if so then I will RMA the pair.

I just did some brief benchmarks in Everest...at 780MHz 4-4-4-12 my latency is 66ns. At 800MHz 4-4-4-12 my latency is 72ns. I haven't messed with the subtimings yet, but if I'm stable overnight at 4-4-4-12 800MHz (and they actually boot at the rated speed tomorrow) I will begin messing with the subtimings.

I hope that I can find some settings around 420MHz FSB (x8 multi) with latency at or under 66ns. Those would be my ideal 24/7 settings.

EDIT: I still would like to know two things...1.) is the vdroop mod reversible if I don't like it....2.) where the heck do you measure vcore with a multimeter??? CPU-Z is reading that my voltage fluctuates by up to 16mV under load. It could be more, I think the smallest change it registers is 8mV. This seems like a lot to me...

[ChaosMinionX]

My FSB has no problem breaking 440MHz, but my E8400 isn't a very good one because past 3.4 or 3.5GHz, it needs 1.36V or more to stay stable...which is more than I want to feed it 24/7. If they do release a BIOS that let's me drop my vcore that would be awesome, but I'm pretty happy with 3.4GHz @ 1.3Vcore.

Anyway I just got my GSkill 2x2GB PC8000 kit and I'm beginning to mess around. It would not boot at 800MHz 4-4-4-12 2.1V, but it will at 2.14V. That's in the motherboard, I'm going to measure with a multimeter tomorrow because I don't want to feed too much past the rated 2.1V. The bad performance at 800MHz leads me to believe that maybe it won't boot at the rated 5-5-5-15 1000MHz, if so then I will RMA the pair.

I just did some brief benchmarks in Everest...at 780MHz 4-4-4-12 my latency is 66ns. At 800MHz 4-4-4-12 my latency is 72ns. I haven't messed with the subtimings yet, but if I'm stable overnight at 4-4-4-12 800MHz (and they actually boot at the rated speed tomorrow) I will begin messing with the subtimings.

I hope that I can find some settings around 420MHz FSB (x8 multi) with latency at or under 66ns. Those would be my ideal 24/7 settings.

EDIT: I still would like to know two things...1.) is the vdroop mod reversible if I don't like it....2.) where the heck do you measure vcore with a multimeter??? CPU-Z is reading that my voltage fluctuates by up to 16mV under load. It could be more, I think the smallest change it registers is 8mV. This seems like a lot to me...

I probably should have been more specific..... they dont do well at all when clocking a quadcore 45nm.... thats where the 440FSB comes in, and I highly doubt its the chip as almost everyone has run into the same problem.

@Tony - Awesome info man , think you could explain a little what exactly the channel clock skew option does?