Intel P4 2.6 HT 800Mhz running on 533Mhz mobo.

[Phoebus]

Hi.

I just bought a Pentium IV 2.6Ghz with HT at 800Mhz FSB.

The problem is that while my mobo supports HT, it is only a 533Mhz FSB mobo.

The motherboard is a Gigabyte GA-8ST800-L (http://tw.giga-byte.com/MotherBoard/...A-8ST800-L.htm).

Currently my system runs - realtively - ok but at 1.74Ghz. I know I probably have to buy a new motherboard that supports 800Mhz FSB but for the time being, could someone please help me to try and get the most out of my new CPU?

The related settings in BIOS are as follows (in the Frequency/VoltageControl menu):

Linear Frequency Control - Disabled/Enabled (I currently have it at disabled)
xCPU Clock (Mhz) - 100 (100-355)
xDRAM Clock (Mhz) - AUTO
xAGP Clock (Mhz) - AUTO
xPCI Clock (Mhz) - AUTO

AGP Voltage Control - Normal (currently) / +0.1V
DRAM Voltage Control - Normal (currently) / +0.1V
CPU Voltage Control - Normal (currently) / +5% / +7.5% / +10%

The four choices under Linear Frequency Control are greyed out unless I Enable that.

I also have enabled HyperThreading from within BIOS.

I would REALLY appreciate any thoughts on this.

Many, many thanks!
Phoebus

PS In case you're interested my RAM is one 512Mb DDR333 module.

[confus-ed]

Having had 'umpteen' goes at writing an answer

You have tried the Easy tune utility that should have come with the main board? he suddenly realises on page 53 of the mannual ? I think that'll fix you right up !

[hudsonsmith]

As near as I can tell, you either need a new mobo or a new cpu. See the cpu support table http://tw.giga-byte.com/Motherboard/...A-8ST800-L.htm for your mobo. As the cpu is multiplier locked, you need to provide it with an 800 fsb if you want 2.6G. Alternatively, you could get the 2.66G P4 w/ the 533 fsb.

[Fubarian]

get a 400mhz ram chip, that should help your stability. For the asus p4pe (845 chipset) you needed a bios update and a 400+mhz stick of mem for it to run right. That could be your issue.

[hudsonsmith]

get a 400mhz ram chip, that should help your stability. For the asus p4pe (845 chipset) you needed a bios update and a 400+mhz stick of mem for it to run right. That could be your issue.

What are you babbling about? Its a gigbyte board w/ an sis chipset. It does not support 800mhz fsb

[meatwad]

My personal recommendation would be to just upgrade the motherboard and RAM. Unfortunately that may not be an option for you. I don't know what the hell confuse-ed is babbling about, but that usually means he's on the right track.

[Ya_know]

What are you babbling about? Its a gigbyte board w/ an sis chipset. It does not support 800mhz fsb

He must have been replying to a different thread...

[confus-ed]

My personal recommendation would be to just upgrade the motherboard and RAM. Unfortunately that may not be an option for you. I don't know what the hell confuse-ed is babbling about, but that usually means he's on the right track.

The easy tune utility I was 'waffling' about is an included 'overclocking tool' specifically for that motherboard - so I couldn't get straight in my head what all the best timings were so I figured just running the tool might very well produce the best/fastest result immediately, which is what the questioner wanted - as he already knows he has a 'bad' mobo/cpu combo