I have the Intel D845EBG2 motherboard with a 2.4GHz Pentium 4 processor. How do I change my FSB from 100MHz to 133?

[AntMendo]

I've been searching through my BIOS for a setting that will change the FSB speed, but I have yet to find it. I also looked on the actual motherboard for a jumper to change the speed, but no luck there either. How do I go about changing it? Thanks for the help.

 

[Ceides]

Could you add a little more info ... like mobo.....

 

[nightowl]

Your not going to be able to change the FSB in the BIOS on an Intel board. Intel does not have any overclocking options on thier boards. You may be able to find some software that will change the FSB bet that is the only way.

 

[AntMendo]

There must be some way to get the FSB to 133MHz because the description of the processor says "2.4GHz and 533MHz FSB," so it wouldn't even be overclocking, just running at the advertised speed. Guess I'm going to have to call Intel, I'm just surprised no one has had the same problem.

 

[Pabster]

The chip isn't the problem. The board is. It isn't going to allow you to set a 133MHz FSB frequency, regardless of the fact that the processor supports it.

 

[AntMendo]

The motherboard says that it supports the exact processor (2.4GHz with 533MHz FSB) that I own. In fact, I bought the motherboard and processor in a combo, so they must be compatible.

 

[CZroe]

Intel boards automatically run at whatever the CPU is rated at (Intel boards are like that). You must have a 100/400Mhz FSB CPU there (There is a 2.4 100/400Mhz and 133/533Mhz FSB P4.) I think the 133/533Mhz FSB one is really 1.43GHz. Oh, and simply bumping from 100 to 133Mhz will not overclock the memory in any 533FSB board like boards of the past, though faster memory speeds are what a faster FSB is really for

 

[dexvx]

I think heres a clearer explanation.

There are 2 types of 2.4 p4's. One is 24x100 = 2400Mhz (2.4)and the otehr is 18x133 = 2400 Mhz (2.4B). If you try putting the 2.4 regular on a 533FSB, then you are overclocking it to 24x133 = 3200Mhz, which most likely isnt going to happen, even on overclocker boards.

 

[AntMendo]

The processor that I have is the 2.4B. Do you know a way I can make the FSB run at 133MHz?

 

[apoppin]

Originally posted by: AntMendo
The processor that I have is the 2.4B. Do you know a way I can make the FSB run at 133MHz?

Yes, buy an overclocking-friendly MB.

There might be some software solutions- but I am unaware of them if your MB doesn't support o/c'ing.

EDIT: If your CPU is a 133FSB CPU it IS running at 133FSB. If it's 100FSB and you want to O/C, you are SOL.

 

[smp]

Originally posted by: AntMendo
The processor that I have is the 2.4B. Do you know a way I can make the FSB run at 133MHz?

I guess you haven't been reading the responses that people have been giving you?


What makes you so sure that your's is running at 100 right now?

If your processor is indeed a 133mhz model and it is booted and running right now, then it's probably running at 133, not 100. If it is indeed running at 100 mhz right now, but it is a 133mhz part, then your clock speed would be 1800mhz right now.

again;
What makes you so sure that your's is running at 100 right now?

 

[AntMendo]

I'm not completely sure that I am running at 100, but that's the only solution that makes sense. I called the company I bought the processor from and they confirmed that they sent the correct 2.4B/533MHz FSB processor. In my System Information it says that my processor is the 2.4GHz version, but also says that I am only running at 1800MHz. I used an Intel utility which said that my processor should be running at 2.4GHz with a 533Mhz FSB, but is actually only running at 1.8GHz with a 400MHz FSB. The only solution to this problem would be the fact that I am running at 100MHz rather than 133. This makes the most sense because all the numbers would line-up if this problem was fixed.

 

[apoppin]

Do you have the latest BIOS for your MB?

Have you read the MB manual (the long version)?

Have you read all the web support pages from your MB mfg?

EXACTLY which MB do you have?

 

[dexvx]

It sounds like a BIOs problem.

You should flash it to the newest BIOs, and the motherboard will auto-detect it as a 2400Mhz (if its 2.4B) and set the FSB to 533. If that still doesnt work, you might want to look at your CPU again (the physical CPU) and look at the markings to make sure you didnt get ripped off or anything, but I highly doubt it will come to that step.

 

[smp]

Originally posted by: AntMendo
I'm not completely sure that I am running at 100, but that's the only solution that makes sense. I called the company I bought the processor from and they confirmed that they sent the correct 2.4B/533MHz FSB processor. In my System Information it says that my processor is the 2.4GHz version, but also says that I am only running at 1800MHz. I used an Intel utility which said that my processor should be running at 2.4GHz with a 533Mhz FSB, but is actually only running at 1.8GHz with a 400MHz FSB. The only solution to this problem would be the fact that I am running at 100MHz rather than 133. This makes the most sense because all the numbers would line-up if this problem was fixed.

Thank you, and that's the kind of information you should have given us in the start, that helps a lot.
Do what the others have said, flash your bios and see if it autodetects then.

 

[AntMendo]

I have the newest BIOS, but what does it mean to flash it? I already went to Intel.com to make sure I have the newest BIOS out and it seems like I am totally up to date.

 

[Wolfsraider]

ok newest bios as in later than p03 is necessary and you can find p04 or newer here

from intel:
Intel® Chipset Software Installation Utility
Do I Need to Upgrade to the Latest Version of the Intel® Chipset Software Installation Utility?

Periodically, Intel releases updates for the Intel® Chipset Software Installation Utility. These updates are primarily to address new Intel chipset releases. From time to time, a new version of the Intel Chipset Software Installation Utility might be released that could contain a bug fix. Intel generally recommends that you do not update to the newer version if you are not experiencing issues with the version of the Intel Chipset Software Installation Utility that is currently installed on your system.

sounds viable in this case.drivers are here

for the latest info on your motherboard go here

got the info from hereand here

if this doesn't help then get in contact with their support services go here

hope this helps
mike

 

[AntMendo]

Thanks for all the help. Unfortunately, everything is up to date. I really can't figure out what the problem could be...

 

[FishTankX]

I guess with all of this frustration, there's only one option left. Call intel directly, and ask their tech support lines what the heck is going on. You might have a bad mobo. Why not call them and ask them if there is any way to detect which part is at fault?