ncch-dl not hitting 200 mhz fsb - any ideas?

mbentley · 02-14-05, 01:22 PM

okay, here is my setup:

asus ncch-dl
2 x intel xeon 2.4 c1's
2 x corsair pc3200 @ 2-2-2-5
2 x mcx603v's cooling the xeons

i run fine when i am at 18 x 166, but when i run my multi at 15 and try to boost the fsb via clockgen to 200, i start to get prime95 errors around 180 - 185. i have my memory set to 266 so it should run at full speed when at 200 mhz fsb... any ideas?

mbentley · 02-14-05, 01:53 PM

well, i actually set the jumper to 200 mhz this time and it worked... i guess clockgen will only take you so far... hehe

now when i boot every couple of times i get a bios rom checksum error... any thoughts?

majestic · 02-14-05, 02:51 PM

C1 stepping? maybe thats your problem

mbentley · 02-14-05, 02:56 PM

Quote:

Originally Posted by majestic

C1 stepping? maybe thats your problem

...and that helps how in this situation?

ajrettke · 02-14-05, 03:10 PM

doesn't the ncch-dl boot up at max multiplier X FSB until it reads the BIOS? (so if you got 533 chips it's booting at 3.6ghz, and 400mhz chips would be 4.8ghz)
If so you might need to do the volt mod.

Also make sure RAM voltage is maxed (2.8 on your board i think) and try loose timings as well.

mbentley · 02-14-05, 03:13 PM

i went ahead and flashed the bios to the latest 1003 bios from the asus website and cleared the cmos before and after... that seemed to make it so the system would boot fine every time... who knows...

dustybyrd · 02-14-05, 03:59 PM

Quote:

Originally Posted by mbentley

i run fine when i am at 18 x 166, but when i run my multi at 15 and try to boost the fsb via clockgen to 200, i start to get prime95 errors around 180 - 185.

i think i read over at 2cpu.com that if the fsb jumper is set to 166 then the pci bus lock doesn't work...but if the fsb jumper is set to 165, then the pci lock works...

therefore, if you set the fsb jumper to 166 and then increase the fsb with clockgen in windows, your pci bus could be causing problems...

also, you might have to increase the vcore using the socket pin mod method for 1.6v to be stable at 3+ghz (especially with C1 chips)....

particularly to boot at 200mhz fsb...since, intially that will be 3.6ghz for your 2.4ghz 533mhz chips with 18x bootstrap multiplier...then as long as you've changed the multiplier to 15x previously, once it gets past the intial post it will boot at 3ghz instead of 3.6ghz...in any case, you will likely need 1.6v vcore

mbentley · 02-14-05, 04:11 PM

Quote:

Originally Posted by dustybyrd

i think i read over at 2cpu.com that if the fsb jumper is set to 166 then the pci bus lock doesn't work...but if the fsb jumper is set to 165, then the pci lock works...

therefore, if you set the fsb jumper to 166 and then increase the fsb with clockgen in windows, your pci bus could be causing problems...

also, you might have to increase the vcore using the socket pin mod method for 1.6v to be stable at 3+ghz (especially with C1 chips)....

particularly to boot at 200mhz fsb...since, intially that will be 3.6ghz for your 2.4ghz 533mhz chips with 18x bootstrap multiplier...then as long as you've changed the multiplier to 15x previously, once it gets past the intial post it will boot at 3ghz instead of 3.6ghz...in any case, you will likely need 1.6v vcore

thank you for your informative post. that makes quite a bit of sense. i am still not sure why clockgen couldn't get me to 200 mhz... i was actually using the 165 in the bios and then using clockgen to change it to 166 initially on booting up... oh well... i am at 200 mhz and haven't had any crashes or anything like that...

mbentley · 02-14-05, 09:06 PM

well i've done a 1.6v mod with the wires (confirmed to work in the bios) and now i am having some stability issues. i figured it would cause the opposite effect.

right now i am running the chipset at 1.5v (stock) and the memory at 2.6v (stock). i don't know if this might be a northbridge cooling issue or what. i know the chips can run ~3.0 at 18*165 rock stable so that is one reason i might think it could be the northbridge with the sink not making good contact or something...

what should i try now?

ajrettke · 02-14-05, 09:20 PM

well take off the northbridge heatsink and apply some thermal epoxy or non conductive paste if it has a retention mechanism.

bump RAM voltage to 2.8 cuz that shouldn't be close to too much voltage....what were your temps at your max OC (appears 3.0) and what are your temps now at 3.0?

mbentley · 02-14-05, 09:34 PM

Quote:

Originally Posted by ajrettke

well take off the northbridge heatsink and apply some thermal epoxy or non conductive paste if it has a retention mechanism.

bump RAM voltage to 2.8 cuz that shouldn't be close to too much voltage....what were your temps at your max OC (appears 3.0) and what are your temps now at 3.0?

i just removed the northbridge, cleaned it and the heatsink and applied some as5. as for the temps with this board, i can't be certain as i haven't found any program (including mbm) that will find sensors on this thing... i bumped ram voltage up to 2.8.

right now i am having issues even getting into windows... gah

mbentley · 02-15-05, 08:37 AM

is there any difference having HT on or off?

*edit: it appears that the vmod to 1.6 from 1.5 has made my overclock unstable... i don't see why this would happen but i can't even overclock 18*165 anymore without erroring out in prime... ideas anybody? here are my chips sspec info:
http://processorfinder.intel.com/scr...ALL&CorSpd=ALL

greenman100 · 02-15-05, 01:26 PM

what power supply?

mbentley · 02-15-05, 01:30 PM

Quote:

Originally Posted by greenman100

what power supply?

fortron 550w eps model FSP550-60PLN

greenman100 · 02-15-05, 01:34 PM

Quote:

Originally Posted by mbentley

fortron 550w eps model FSP550-60PLN

18Amps on the CPU rail

12*18=216 watts available

assuming 80% efficency, that's 172 watts available to the CPUs, assuming that no other power is drawn from the CPU rail

172/2=86 watts

I'm pretty sure a xeon at 1.6v will pull more than 86 watts. check the CPU rail with a multimeter. Make sure you're not checking the wrong rail.

diehrd · 02-15-05, 02:21 PM

Quote:

Originally Posted by mbentley

fortron 550w eps model FSP550-60PLN

I knoiw another member had an OCZ that was 18a on the 12v rial and 18a on the second rail.IT WOULD NOT POWER THE RIG...I have no clue what these processors chew up for amperage but I am convinced you need as close to 27a available to the processors from the 12v rail..

DaveB · 02-15-05, 04:05 PM

Quote:

Originally Posted by greenman100

18Amps on the CPU rail

12*18=216 watts available

assuming 80% efficency, that's 172 watts available to the CPUs, assuming that no other power is drawn from the CPU rail

172/2=86 watts

I'm pretty sure a xeon at 1.6v will pull more than 86 watts. check the CPU rail with a multimeter. Make sure you're not checking the wrong rail.

I'm running my Vcore modded 1.6LVs at 3.12 GHz in a PC-DL with a 6800 128MB AGP, 2 x 512MB PC3200 DDR, a SATA 80GB hard drive, DVD-ROM, and DVD Burner from an AMS Mercury EPS12V PS. The AMS has split +12V rails with 18A dedicated to the motherboard and CPUs. It runs rock stable, no problems. The BIOS reads the +12V potential at +12.20V. The other +12V rail has 15A available for drives.

DaveB · 02-15-05, 04:11 PM

Quote:

Originally Posted by mbentley

well i've done a 1.6v mod with the wires (confirmed to work in the bios) and now i am having some stability issues. i figured it would cause the opposite effect.

Wires? The 1.5V to 1.6V mod requires a single u-wire in each socket bridging D2-D3. By "wires" did you mean one in each socket? If you used more than one per socket, the mod wasn't done correctly.

greenman100 · 02-15-05, 04:19 PM

Quote:

Originally Posted by DaveB

I'm running my Vcore modded 1.6LVs at 3.12 GHz in a PC-DL with a 6800 128MB AGP, 2 x 512MB PC3200 DDR, a SATA 80GB hard drive, DVD-ROM, and DVD Burner from an AMS Mercury EPS12V PS. The AMS has split +12V rails with 18A dedicated to the motherboard and CPUs. It runs rock stable, no problems. The BIOS reads the +12V potential at +12.20V. The other +12V rail has 15A available for drives.

the 6800, HDs, and opticals dont matter

all I was asking him to do was check the CPU line with a multimeter

Rpkole · 02-15-05, 04:25 PM

Quote:

Originally Posted by ajrettke

well take off the northbridge heatsink and apply some thermal epoxy or non conductive paste if it has a retention mechanism.

Quote:

Originally Posted by mbentley

i just removed the northbridge, cleaned it and the heatsink and applied some as5.

I was just wondering if AS5 was non conductive

02-14-05, 01:22 PM	Thread Starter #1
mbentley Gloriously Lead Overclockix Chief Architect Join Date: Sep 2002 Location: indianapolis, indiana	ncch-dl not hitting 200 mhz fsb - any ideas? okay, here is my setup: asus ncch-dl 2 x intel xeon 2.4 c1's 2 x corsair pc3200 @ 2-2-2-5 2 x mcx603v's cooling the xeons i run fine when i am at 18 x 166, but when i run my multi at 15 and try to boost the fsb via clockgen to 200, i start to get prime95 errors around 180 - 185. i have my memory set to 266 so it should run at full speed when at 200 mhz fsb... any ideas? __________________ intel i5-750 -- msi p55-gd65 -- 4 x 4096mb ddr3 1600 -- msi gtx550 ti cyclone oc 1gb -- antec p182 -- ocz fatal1ty 750w -- win8 x64 intel i5-3330 -- msi z77a-gd65 -- 4 x 8gb ddr3 1600 -- intel hd graphics 2500 -- chieftec bravo ba-01b-b-b -- debian wheezy amd64 forum rules \| overclockix \| overclockers geforce survey \| mbentley.net
	QUOTE Thanks

02-14-05, 01:53 PM	Thread Starter #2
mbentley Gloriously Lead Overclockix Chief Architect Join Date: Sep 2002 Location: indianapolis, indiana	well, i actually set the jumper to 200 mhz this time and it worked... i guess clockgen will only take you so far... hehe now when i boot every couple of times i get a bios rom checksum error... any thoughts? __________________ intel i5-750 -- msi p55-gd65 -- 4 x 4096mb ddr3 1600 -- msi gtx550 ti cyclone oc 1gb -- antec p182 -- ocz fatal1ty 750w -- win8 x64 intel i5-3330 -- msi z77a-gd65 -- 4 x 8gb ddr3 1600 -- intel hd graphics 2500 -- chieftec bravo ba-01b-b-b -- debian wheezy amd64 forum rules \| overclockix \| overclockers geforce survey \| mbentley.net Last edited by mbentley; 02-14-05 at 02:02 PM.
	QUOTE Thanks

02-14-05, 02:51 PM	#3
majestic Registered Join Date: Feb 2003	C1 stepping? maybe thats your problem
	QUOTE Thanks

02-14-05, 03:10 PM	#5
ajrettke Member Join Date: May 2002 Location: Colorado Springs	doesn't the ncch-dl boot up at max multiplier X FSB until it reads the BIOS? (so if you got 533 chips it's booting at 3.6ghz, and 400mhz chips would be 4.8ghz) If so you might need to do the volt mod. Also make sure RAM voltage is maxed (2.8 on your board i think) and try loose timings as well. __________________ Q6600@390x9 (3.5 and 1.400v) WC'd MSI P35 Neo2-FR 2x2 gb of DDR2 800 2 x Vertex 2 SSD's RAID 0 Sennheiser HDR-120's 2405FPW+2x2001FP "Computer games don’t affect kids; I mean if Pac-Man affected us as kids, we’d all be running around in darkened rooms, munching magic pills and listening to repetitve electonic dance music..." - Kristian Wilson, Nintendo Inc, 1989 "Is it worth overclocking? That's like asking if sex is enjoyable!" -cw823
	QUOTE Thanks

02-14-05, 03:13 PM	Thread Starter #6
mbentley Gloriously Lead Overclockix Chief Architect Join Date: Sep 2002 Location: indianapolis, indiana	i went ahead and flashed the bios to the latest 1003 bios from the asus website and cleared the cmos before and after... that seemed to make it so the system would boot fine every time... who knows... __________________ intel i5-750 -- msi p55-gd65 -- 4 x 4096mb ddr3 1600 -- msi gtx550 ti cyclone oc 1gb -- antec p182 -- ocz fatal1ty 750w -- win8 x64 intel i5-3330 -- msi z77a-gd65 -- 4 x 8gb ddr3 1600 -- intel hd graphics 2500 -- chieftec bravo ba-01b-b-b -- debian wheezy amd64 forum rules \| overclockix \| overclockers geforce survey \| mbentley.net
	QUOTE Thanks

ncch-dl not hitting 200 mhz fsb - any ideas?

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02-14-05, 09:06 PM	Thread Starter #9
mbentley Gloriously Lead Overclockix Chief Architect Join Date: Sep 2002 Location: indianapolis, indiana	well i've done a 1.6v mod with the wires (confirmed to work in the bios) and now i am having some stability issues. i figured it would cause the opposite effect. right now i am running the chipset at 1.5v (stock) and the memory at 2.6v (stock). i don't know if this might be a northbridge cooling issue or what. i know the chips can run ~3.0 at 18*165 rock stable so that is one reason i might think it could be the northbridge with the sink not making good contact or something... what should i try now? __________________ intel i5-750 -- msi p55-gd65 -- 4 x 4096mb ddr3 1600 -- msi gtx550 ti cyclone oc 1gb -- antec p182 -- ocz fatal1ty 750w -- win8 x64 intel i5-3330 -- msi z77a-gd65 -- 4 x 8gb ddr3 1600 -- intel hd graphics 2500 -- chieftec bravo ba-01b-b-b -- debian wheezy amd64 forum rules \| overclockix \| overclockers geforce survey \| mbentley.net
	QUOTE Thanks

02-14-05, 09:20 PM	#10
ajrettke Member Join Date: May 2002 Location: Colorado Springs	well take off the northbridge heatsink and apply some thermal epoxy or non conductive paste if it has a retention mechanism. bump RAM voltage to 2.8 cuz that shouldn't be close to too much voltage....what were your temps at your max OC (appears 3.0) and what are your temps now at 3.0? __________________ Q6600@390x9 (3.5 and 1.400v) WC'd MSI P35 Neo2-FR 2x2 gb of DDR2 800 2 x Vertex 2 SSD's RAID 0 Sennheiser HDR-120's 2405FPW+2x2001FP "Computer games don’t affect kids; I mean if Pac-Man affected us as kids, we’d all be running around in darkened rooms, munching magic pills and listening to repetitve electonic dance music..." - Kristian Wilson, Nintendo Inc, 1989 "Is it worth overclocking? That's like asking if sex is enjoyable!" -cw823
	QUOTE Thanks

02-15-05, 08:37 AM	Thread Starter #12
mbentley Gloriously Lead Overclockix Chief Architect Join Date: Sep 2002 Location: indianapolis, indiana	is there any difference having HT on or off? edit: it appears that the vmod to 1.6 from 1.5 has made my overclock unstable... i don't see why this would happen but i can't even overclock 18165 anymore without erroring out in prime... ideas anybody? here are my chips sspec info: http://processorfinder.intel.com/scr...ALL&CorSpd=ALL __________________ intel i5-750 -- msi p55-gd65 -- 4 x 4096mb ddr3 1600 -- msi gtx550 ti cyclone oc 1gb -- antec p182 -- ocz fatal1ty 750w -- win8 x64 intel i5-3330 -- msi z77a-gd65 -- 4 x 8gb ddr3 1600 -- intel hd graphics 2500 -- chieftec bravo ba-01b-b-b -- debian wheezy amd64 forum rules \| overclockix \| overclockers geforce survey \| mbentley.net Last edited by mbentley; 02-15-05 at 12:51 PM.
	QUOTE Thanks

02-15-05, 01:26 PM	#13
greenman100 Disabled Join Date: May 2003 Location: trying to keep all the magic smoke in	what power supply?
	QUOTE Thanks

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