[Adidas72]

Ok. This is my first post here so bare with me. I have an Asus P4T533 motherboard with 512mb of 1066 RAMbus ram. I had a P4 2.4 processor and all was well. Now I went and bought a P4 2.6 Hyper Threading processor and swapped the processors out on this same board. I had changed no settings when I did this, but for some reason, my Bios says I have to manually set the settings for the processor speed. Well, I can not seem to get the processor to run at the full 2.6ghz, but only around 2.0 stabley. If I change the core clock speed to 200 which would put the processor at 2.6, I get an error saying that the current mode does not support that configuration. If the clock speed is set between 190 and 199, the processor works fine for a bit, but I get blue screens with memory dumps and random errors, depending on what I was doing. Anything below 190, and all is well. Now the motherboard temp is usually around 105°F and the processor temp is around 96°F-101°F. I am not sure if that is too high, but I am thinking about getting a better heatsink and fan anyway. All I need to know is how I can get my CPU set to run at the full speed. My P4 2.4 was running just fine and my Bios showed it set to Auto. When I try and change the setting from Manual, I just get 2 speeds to choose from, 1200 somthing mhz and 1766mhz. Hopefully I am making sense. Please help if you can and if you need anything else, let me know. I am pretty computer Literate, but obviously do not know it all. Thank you.

Michael

 

[SPEEDO]

Welcome to Tech Support Forums Adidas72...........

First your motherboard is for a 533FSB not a 400FSB.

The CPU you have is a P4 2.6 400Mhz. FSB.

Unless it's the 2.6C which is for 800Mhz. FSB

I don't think your motherboard even supports hyper-threading.

Introduction
The ASUS P4T533 incorporates the Intel® 850E chipset with high-bandwidth 1066MHz RDRAM support to deliver the best performance for latest 533MHz FSB Pentium 4 processors. A maximum 2GB of RDRAM is supported with a peak bandwidth reaching up to 4.2GB/s. Play the most advanced 3D games without a glitch, and get the best performance out of today's memory intensive applications. The ASUS P4T533 and Pentium 4 combine to provide an ideal scalable, high performance platform for desktops and workstations.

Here's a list of processors.

 

[Adidas72]

Hi and thank you for the info. The processor I have is on the list you gave. It is the p4 2.6C (800mhz FSB) Hyper Threading processor. As far as I know, the Hyper Threading processors only come in the 800mhz FSB flavor. I had also made a mistake in my post. I was talking about changing the core clock speed in the post, but I meant the processors Frequency(mhz) in the bios setup. It allows me to choose from 100mhz all the way to 200mhz ( with 200mhz setting the processor to run at 2.6ghz). Also, Hyper threading is enabled so I am not having trouble with that. Here is a break down of the things I have set in the bios:

*Cpu Speed=Manual (other choices=1300mhz or 1733mhz)( With my other processor P4 2.4 this field said Auto. I do not get to set it to Auto now)
*CPU Frequency Multiple=13x but I can not change this one at all.
*CPU External Frequency=165mhz ( other choices=100mhz-200mhz)(this is the one I change to get the various processor speeds with 200 being the 2.60ghz setting)
*CPU/Memory Freq. Ratio=Auto (other choices=3x or 4x)( I have no idea what this does)
*AGP/PCI Freq. Setting=Auto ( when set to manual other choices range from 67/33 to 105/52)
*CPU Vcore Setting=Auto ( when set to manual choices start at 1.525V
*Hyperthreading=Enabled ( disabled is the other choice here)

Now I know that by changing some things here allow me to over clock my processor, but I do not want to do that. I just want to know how I can make the processor run at it's intended speed without the crashing and errors. Like I said before, I can change thew Frequency to 200mhz which puts the processor at 2.6ghz, but I get an error at boot up stating that it is not supported in the mode I am currently running. When I change the External Freq. to 199, the computer infor shows the processor running at 2.59ghz, but again it is unstable even though the comp boots up. So if anyone can help with this, whether it be changing a jumper on the motherboard or just getting a better heatsink, I am willing to try anything.

Thanks again for all the help.
Michael

 

[SPEEDO]

What is the bios version on that motherboard? There are a couple of upgrades here. One of them allows support of hyper-threading technology. So if yours is older than 1005 you should upgrade to the newer ones.

I could be wrong but it seems like you have a mismatch with your hardware. CPU=800 Mhz. FSB, Ram=1066 and motherboard=533.

The ram and the motherboard match but the CPU is not a match it should also be 533.

I could be wrong on this tho...............

 

[SPEEDO]

Here is a list of Asus Motherboards that support your CPU.

 

[Adidas72]

Thanks for the info. I am thinking the same thing. I would think that the processor would still work, but am not sure. I will contact Asus and see what they have to say. My bios version is 1006. I updated it when I installed the motherboard. Looks like I may be buying a new motherboard and memory:no: Oh well, thanks again SPEEDO. I will let you know what happens with Asus.
Late