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[THUGSROOK]

NanoMem im not using the 3:4 ratio when hunting for FSB speeds with the dipswitches.

ill try to get the rest of them identified tonight.

 

[christoph83]

This is sweet! I did the mod at 155Mhz FSB at 1.75v on the core (true voltage)

How are you able to get 1.75v in jumper mode? Are you using the wire trick?

 

[NanoMem]

Thugs, I think you'll find this of interest to your current focus on pivot 166 cuz intel is about to certify DDR333 with upcoming chipset releases and the addition of P4 2.66 which is probably a core of 133 mulitplied by 20. Note also the mention of DDR333 support in BIOS. Intel is just going to hardcode those ratios into NB and label it their new 845GE/PE. Check it out!

 

[NanoMem]

Originally posted by: THUGSROOK
NanoMem im not using the 3:4 ratio when hunting for FSB speeds with the dipswitches.

ill try to get the rest of them identified tonight.

Sorry, I got carried away! You're right you did mention this to me yesterday that you were just making sure that the value was hardcodable with the dipswitch in 1:1 mode and once found you'd drive it into 3:4.

Peace.

 

[THUGSROOK]

christoph83 yes we are using the 1.7v wire mod.
it gives us 1.74-1.76v in windows using jumper mode.

NanoMem yep i already knew months ago that intel is going to a 166fsb. they will also be going to a 200fsb shortly afterwords. probably with DDRII. both platforms "officially" use 1:1 DDR ratios.

obviously intels realizes the importance of high fsb and 1:1 ratios and are going to capitalize on it.
they are basically overclocking their own chips - just like we are

 

[THUGSROOK]

no 166fsb ... did we miss one?

*i updated the main post

 

[NanoMem]

OK! Going back to the list at the very top of the thread looks like FSB switch settings for 66 and 170 are twins. Could it be????
Regardless, the following 3 are missing:
OFF ON ON ON OFF
ON OFF ON ON OFF
ON OFF ON ON ON

Peace.

 

[Mage]

Anyone know what the PCI/AGP speeds are for the 143 or 145 FSBs? I really hope setting the system to Turbo1 (locking the speeds at 36/72) is retained in jumper mode...

 

[THUGSROOK]

NanoMem oops sorry bout that typo. <fixed> all this ON OFF ON has me fried :disgust:

Mage
143fsb 71AGP/35PCI
145fsb 72AGP/36PCI
150fsb 75AGP/37PCI
155fsb 77AGP/38PCI

 

[Acanthus]

thugs just wire mod the ram sensor and run it at 3v youll need to watercool ur ram, but ill bet on some nice clocks i can send ya some 33k ohms if ya need the 20 cents lol

 

[THUGSROOK]

Acanthus HAHAHAHAHA ....no thx

im not exactly unhappy running 170fsb 1:1

 

[Mage]

Thanks thugsrook

Too bad Cas settings are locked above DDR300

 

[THUGSROOK]

Mage actually 2.5/3/3/7 aint bad at all for 400DDR speeds.
the SiS645 boards toss it back as far as 2.5/4/4/7 @ only 333DDR :|

NanoMem im all done with the dipswitches - no 166fsb

here's screenshot of my P4A @ 1063mhz 66fsb :Q

 

[CrawlingEye]

In a couple hours I'll see if this works with my P4S333.
Wouldn't that be nutso if I could get 135fsb or 140 with a 3:5 divider?

 

[oldfart]

Mage actually 2.5/3/3/7 aint bad at all for 400DDR speeds.

Pretty much true. DDR400 needs cas2.5 with currently available ram. I can run 3/2/6 which is only a very slight performance improvement from 3/3/7.

 

[SupermanCK]

There are 3 133FSB settings???

 

[THUGSROOK]

yep - quite a few speeds are duplicated.

here's the CPUz program so you can see your actual DDR speed and Cas settings.

here's the HardForum thread for those that want more to read.

 

[SupermanCK]

Thugsrook Have you tried adding Vmem? I read in the mobo manual you can change it with jumpers...stage1 = 2.6v...stage2 = 2.7v

 

[THUGSROOK]

yes i was using 2.7v when testing the 3:4 ratio.

 

[oldfart]

You tried all of those?? You must have worn out the dip switches on that board!

 

[THUGSROOK]

oldfart lol - no

Deke from HardForum got it started.
i filled in the official jumper settings.
NanoMem figured out which combinations still needed to be tried.
i tried those combos and finished the chart

 

[NanoMem]

ThugsRook, that's all of there is to the list! I guess at the time that Asus was engineering the P4B266, they just didn't program 166 in the hardware but they did use this board up to 180 obviously.
Peace.

 

[THUGSROOK]

166fsb may be one of those 2 combos that wouldnt boot for me
weird that i had no problems booting 170 & 180fsb tho.
thx for the help NanoMem.

 

[SupermanCK]

3:4 at 170FSB = meaning DDR453.33....have you try running this set up? I know you did 1:1 at first EDITnm...i just saw it at your beginning post
can you imagine 3:4 @ 180FSB = DDR480...if this is possible...bet it will beat out most RAMBUS...

 

[THUGSROOK]

yea 170fsb 3:4 wouldnt even boot.

even todays best DDR cant run much over 420DDR 100% stable.
most PC3200 is nothing more then OCed PC2700.
why have we not seen 4.5ns DDR yet?