P4 2.6 ghz running at half speed

[cstitt]

I replaced a celeron 2.6 ghz in a Gateway ESSEX2 desktop computer with a P4 2.6 ghz 512/800 CPU and it runs at half speed.  Also tried it in Compaq Presario with 2.66 GHZ Celeron and same thing happened.  Is there a solution for this problem?

[Sodde]

I think it may have something to do with the BUS speed of the MB and the chip you are trying to fit.
You might want to check the specs of both for compatability.

[cstitt]

I think it may have something to do with the BUS speed of the MB and the chip you are trying to fit.
You might want to check the specs of both for compatability.

I don't have any documentation for the MB's and so far unable to get any info for them but I think 400 is the max and thanks for responding.

[Computer_Commando]

I don't have any documentation for the MB's and so far unable to get any info for them but I think 400 is the max and thanks for responding.

Find it here:  http://support.gateway.com/support/default.aspx

[cstitt]

Find it here:  http://support.gateway.com/support/default.aspx

Thank you, I found this info on CPU "Support for Intel® Pentium® 4 and Celeron™ processors
400/533-MHz System Data bus 478-pin ZIF socket"

The CPU in question is P4 512/800-MHZ.  Would this be my problem?

[Computer_Commando]

Download, install and run CPU-Z:  http://www.cpuid.com/
Post ta screenshot from the CPU tab.

[cstitt]

Download, install and run CPU-Z:  http://www.cpuid.com/
Post ta screenshot from the CPU tab.

I took the P4 out and put the Celeron back in.  Do you want the read out from the problem cpu (P4)?  If so, I will reinstall it and get the read out.

I have screen shot for the Celeron but how do I post screen shot?  (how do I get screen shot)

[Computer_Commando]

I took the P4 out and put the Celeron back in.  Do you want the read out from the problem cpu (P4)?  If so, I will reinstall it and get the read out.

I have screen shot for the Celeron but how do I post screen shot?  (how do I get screen shot)

1.  Capture image - with app or window "active"; ALT-PrntScrn copies it to Clipboard, paste into Paint or any graphics app, save as jpg.  BTW, "Shift-PrntScrn" captures entire desktop (don't do this).
2.  Below CH Message Box click on Additional Options:  Attach image you just created.

[Merlyn]

Could this have anything to do with the bios and hyperthreading? (just a thought)

Merlyn

[Merlyn]

800MHz is sure to have HyperThreading... 

[Computer_Commando]

It's probably because the bus speed is 400 and the P4 is 800, so effectively it's being under-clocked by 1/2.  Motherboard probably does not have capability of adjusting bus speed.

[cstitt]

This is the Attach of screen shot for CPU in question

[recovering disk space - old attachment deleted by admin]

[Merlyn]

It has Hyper threading (YES  )

Well maybe the Processor in question has has ESD? (Electrostatic discharge/damage)

the clock speed should e alot higher?

do you have Motherboard Details?

[Computer_Commando]

http://www.cpu-world.com/info/Intel/Intel_Pentium_4.html
I see 2 Northwood Socket 478's at 2.60GHz
RK80532PC064512; BX80532PC2600D, 400MHz, 26;  This P4 would give you 2.6GHz
RK80532PG064512; BX80532PG2600D, 800MHz, 13  This is probably your P4; part number is on the top of the cpu

Your Bus Speed is 100, Celeron's multiplier is 26, P4 multiplier is 13.

It's a lot more involved than you were thinking (LOL).  There's nothing you can do unless the motherboard has the ability to be reconfigured, which most all branded computers cannot.  Retail motherboards are much more configurable.

[Merlyn]

Well that's interesting...
Maybe it's the Hyper Threading that's doing it? Try turning off Hyper Threading inside the BIOS settings? It could be that the motherboard doesn't support Hyper Threading technology... If we had a Name and Make of the motherboard we may be able to tell if it has the support for hyper threading....

Computer Commando, Help me with this?

Merlyn