cpu settings/fsb settings

Schlumpf · 02-11-2001, 11:19 AM

I´m planning to buy a cusl2 but i have a few questions about the cpu and ram settings.
i have a p3 667 and 256mb kingmax 150.
now my question:
how can i set the cpu clock and the ram?
i need 166 mhz bus for the cpu. what are the possible settings for the ram?

garnet_abx · 02-11-2001, 12:52 PM

What do you mean "i need 166 mhz bus for the cpu"? Do you mean 133?
The settings that you require can all be done in the bios, providing you install the mobo in jumperless mode. (the CUSL2 is set up default jumperless when you get it) Your manual will provide you with the info you need to get started. Once you're up and running, post back in this forum for any additional help you may need.

Schlumpf · 02-11-2001, 03:45 PM

my p3 667 (133) runs at 750 (5*150) mhz. my mainboard does not support any higher setting than 150 mhz bus. therefore i want to know wich ram settings are possible when the cpu (in my case) runs at 166mhz bus! or are there higher possible settings for the cpu?
i don't like that my ram runs at 166 or higher because it may not work.
150 3-3-3 is slower than 133 2-2-2. because of that i would like to run the cpu at 166 and the ram at 133. you understand me now?

rdmpe · 02-11-2001, 04:15 PM

Yes, you can set the ratio of cpu/ram/pci to 133/100/33. Then your ram will be running slower than 166, while your cpu is running on a 166 fsb.

I read a review that did just this. However, they said that the performance with fsb at 166 and ram at 3/4 ratio (like you want to do) was simlar to a system with fsb and ram at 150, so no real advantage in their opinion except to see how high the cpu can go.

Before buying an 815 chipset mobo, try to find out all you can on the "cold boot problem". This is the biggest problem I have with the mobo. On a cold boot, the higher vcore does not get applied at the beginning of the post process. So the cpu has to post at default vcore.

The result is that I can run a stable system PIII700E@1000 all day including warm reboots. But if I turn it off, and then turn it back on again, it will not post.

The fastest I can post at is 973. Good luck!

fragmaster666 · 02-11-2001, 05:18 PM

hi,

if u want your cpu running @ ~166 and up
your ram will be running @ ~125 and up
and it's pci freq. will be @ ~41 and up

fsb will go all the way up to 216mhz if your components will run @ more than 41mhz

good luck!

garnet_abx · 02-11-2001, 05:20 PM

Yes, I understand what you mean now. Randyminer has answered you. You'll be able to set you fsb at 166 and your ram will be 133. I think that's right!
I'll add that I'm running 700@1015 with no cold boot problem. My setting is 145/145/36. Not all CUSL2's have that problem!

rdmpe · 02-12-2001, 01:09 PM

garnet:
I think that the problem is due to the cpu rather than the motherboard. I think that you got a good cpu that can post at the lower vcore. AFter the post, the vcore gets changed to whatever you set it at, so if your cpu posts, you'd never know the vcore was lower.

This is how I understand it, but I may be wrong. If you know of more info on this (web, reviews, etc.) please let me know as I am very interested in getting this cpu over 1000. Thanks!

martin_abx · 02-12-2001, 03:00 PM

randyminer explenation of the coldboot problem is correct.
If you set the vcore at somthing else than the default for your cpu and power down the system. The cpu will run at default vcore while executing the bios. The vcore is set right before the bios starts loading the OS.
So if your cpu can execute the bios at the default volt and the selected speed, you will never see the coldboot problem, but its there.

rdmpe · 02-12-2001, 04:04 PM

Just as I suspected. What in the world causes this limitation? I bet the intel chipset makes it work that way so that they (intel) can get a handle on overclockers.

garnet_abx · 02-12-2001, 06:52 PM

I stand corrected and will change that line........"not all CUSL2's have that problem" to - not all CPU's have that problem!
Thanks for the info.

martin_abx · 02-12-2001, 06:53 PM

That might be the case or Asus just did a mistake. This could be fixed by always starting at the last known voltage or by delaying the fsb change, so that the new vcore is set and then the new FSB is set.

Starting with the last known vcore setting could damage your CPU if you upgrade to a CPU with a lower volt tolerance then the one you had, and you had already pushed your old CPU to the vcore limit (and forgot to set the vcore to default when upgrading).

I don't know what rules apply to the bios execution order, but it should be possible to move things around. The limited space might be a problem when making serious changes.

I don't really know if these suggestions would be possible to implement in to the bios or not.

rdmpe · 02-12-2001, 09:39 PM

I've heard about some guys revising their bios. Sure would be nice to make the vcore take effect then the fsb. Never thought of that. So who knows how to decompile and edit a bios file? Probably safer to do the wire trick!

02-11-2001, 11:19 AM	#1
Schlumpf Registered User Join Date: Feb 2001 Posts: 2	I´m planning to buy a cusl2 but i have a few questions about the cpu and ram settings. i have a p3 667 and 256mb kingmax 150. now my question: how can i set the cpu clock and the ram? i need 166 mhz bus for the cpu. what are the possible settings for the ram?
(Offline)

02-11-2001, 12:52 PM	#2
garnet_abx SEXpert Join Date: Feb 2001 Location: Nova Scotia, Canada Posts: 16,182	What do you mean "i need 166 mhz bus for the cpu"? Do you mean 133? The settings that you require can all be done in the bios, providing you install the mobo in jumperless mode. (the CUSL2 is set up default jumperless when you get it) Your manual will provide you with the info you need to get started. Once you're up and running, post back in this forum for any additional help you may need. __________________ Abit NF7-S 2500+ mobile 1.86g@2.4g OCZ 3500 EL Dual Channel Memory BFG GeForce 6600 GT OC My Computer Compare - 3DMark 2003; 3DMark2001 Folding will help save lives.........................maybe your own!
(Offline)

02-11-2001, 03:45 PM	#3
Schlumpf Registered User Join Date: Feb 2001 Posts: 2	my p3 667 (133) runs at 750 (5*150) mhz. my mainboard does not support any higher setting than 150 mhz bus. therefore i want to know wich ram settings are possible when the cpu (in my case) runs at 166mhz bus! or are there higher possible settings for the cpu? i don't like that my ram runs at 166 or higher because it may not work. 150 3-3-3 is slower than 133 2-2-2. because of that i would like to run the cpu at 166 and the ram at 133. you understand me now?
(Offline)

02-11-2001, 04:15 PM	#4
rdmpe A sandwich in every glass Join Date: Feb 2001 Location: Orlando, Florida Posts: 2,609	Yes, you can set the ratio of cpu/ram/pci to 133/100/33. Then your ram will be running slower than 166, while your cpu is running on a 166 fsb. I read a review that did just this. However, they said that the performance with fsb at 166 and ram at 3/4 ratio (like you want to do) was simlar to a system with fsb and ram at 150, so no real advantage in their opinion except to see how high the cpu can go. Before buying an 815 chipset mobo, try to find out all you can on the "cold boot problem". This is the biggest problem I have with the mobo. On a cold boot, the higher vcore does not get applied at the beginning of the post process. So the cpu has to post at default vcore. The result is that I can run a stable system PIII700E@1000 all day including warm reboots. But if I turn it off, and then turn it back on again, it will not post. The fastest I can post at is 973. Good luck! __________________ Check out my auctions!
(Offline)

02-11-2001, 05:18 PM	#5
fragmaster666 Registered User Join Date: Feb 2001 Location: Germany Posts: 43	hi, if u want your cpu running @ ~166 and up your ram will be running @ ~125 and up and it's pci freq. will be @ ~41 and up fsb will go all the way up to 216mhz if your components will run @ more than 41mhz good luck! __________________ CUSL2 rev 1.02 /w 1012tw // Celi-T 1000@1550 1,65V // Alpha PAL6035 lapped // 2x 256MB Infineon PC133@155 2-2-2 // Win2k SP3 Abit IC7-G 1.3 // 2.4C @ 3240 1.65V// stock cooling // 2x original Samsung DDR400@216 3-8-4-4 // WinXP pro SP1
(Offline)

02-11-2001, 05:20 PM	#6
garnet_abx SEXpert Join Date: Feb 2001 Location: Nova Scotia, Canada Posts: 16,182	Yes, I understand what you mean now. Randyminer has answered you. You'll be able to set you fsb at 166 and your ram will be 133. I think that's right! I'll add that I'm running 700@1015 with no cold boot problem. My setting is 145/145/36. Not all CUSL2's have that problem! __________________ Abit NF7-S 2500+ mobile 1.86g@2.4g OCZ 3500 EL Dual Channel Memory BFG GeForce 6600 GT OC My Computer Compare - 3DMark 2003; 3DMark2001 Folding will help save lives.........................maybe your own!
(Offline)

02-12-2001, 01:09 PM	#7
rdmpe A sandwich in every glass Join Date: Feb 2001 Location: Orlando, Florida Posts: 2,609	garnet: I think that the problem is due to the cpu rather than the motherboard. I think that you got a good cpu that can post at the lower vcore. AFter the post, the vcore gets changed to whatever you set it at, so if your cpu posts, you'd never know the vcore was lower. This is how I understand it, but I may be wrong. If you know of more info on this (web, reviews, etc.) please let me know as I am very interested in getting this cpu over 1000. Thanks! __________________ Check out my auctions!
(Offline)

02-12-2001, 03:00 PM	#8
martin_abx Registered User Join Date: Feb 2001 Posts: 41	randyminer explenation of the coldboot problem is correct. If you set the vcore at somthing else than the default for your cpu and power down the system. The cpu will run at default vcore while executing the bios. The vcore is set right before the bios starts loading the OS. So if your cpu can execute the bios at the default volt and the selected speed, you will never see the coldboot problem, but its there.
(Offline)

02-12-2001, 04:04 PM	#9
rdmpe A sandwich in every glass Join Date: Feb 2001 Location: Orlando, Florida Posts: 2,609	Just as I suspected. What in the world causes this limitation? I bet the intel chipset makes it work that way so that they (intel) can get a handle on overclockers. __________________ Check out my auctions!
(Offline)

02-12-2001, 06:52 PM	#10
garnet_abx SEXpert Join Date: Feb 2001 Location: Nova Scotia, Canada Posts: 16,182	I stand corrected and will change that line........"not all CUSL2's have that problem" to - not all CPU's have that problem! Thanks for the info. __________________ Abit NF7-S 2500+ mobile 1.86g@2.4g OCZ 3500 EL Dual Channel Memory BFG GeForce 6600 GT OC My Computer Compare - 3DMark 2003; 3DMark2001 Folding will help save lives.........................maybe your own!
(Offline)

02-12-2001, 06:53 PM	#11
martin_abx Registered User Join Date: Feb 2001 Posts: 41	That might be the case or Asus just did a mistake. This could be fixed by always starting at the last known voltage or by delaying the fsb change, so that the new vcore is set and then the new FSB is set. Starting with the last known vcore setting could damage your CPU if you upgrade to a CPU with a lower volt tolerance then the one you had, and you had already pushed your old CPU to the vcore limit (and forgot to set the vcore to default when upgrading). I don't know what rules apply to the bios execution order, but it should be possible to move things around. The limited space might be a problem when making serious changes. I don't really know if these suggestions would be possible to implement in to the bios or not.
(Offline)

02-12-2001, 09:39 PM	#12
rdmpe A sandwich in every glass Join Date: Feb 2001 Location: Orlando, Florida Posts: 2,609	I've heard about some guys revising their bios. Sure would be nice to make the vcore take effect then the fsb. Never thought of that. So who knows how to decompile and edit a bios file? Probably safer to do the wire trick! __________________ Check out my auctions!
(Offline)

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