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P4 running at 1.8ghz instead of 2.6ghz

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January 9, 2004 12:35:41 PM

Hi, I just replaced my P4 2.4ghz 533mhz processor in my Asus P4T533 mobo with the P4 2.6c 800mhz Hyperthreaded. I am uncertain why but the speed is currently 1.8ghz. Multiplier is locked at 13 and no other option to bring the CPU to 2.6C seems to be available besides raising the fsb and voltage. Is this an incompatiblitity of the cpu fsb (800 vice 533) or is there something I can do to get this processor to function at its stated speed? Appreciate your help!

More about : running 8ghz 6ghz

January 9, 2004 1:07:45 PM

Your CPU is running at 133 clock instead of the 200 clock that cpu should be doing. That Mobo you have is rated for only 133 (133x4=533) and I highly doubt you can safely OC the northbridge to accomodate the 200 clock (200x4=800). The bottom line you need to have your system do the 200 clock to get the 2.6ghz speed.

Barton 2500+ @ 2200mhz (10x220 vcore @ 1.8)
Asus A7N8X Dlx 440 FSB
1gb Geil GD pc3500 Dual Channel (2-3-3-6)
Segata 80gb SATA 8.5ms seek
ATI Radeon 9800 Pro(420/720)
January 9, 2004 1:25:01 PM

That sucks, so much for a spontaneous purchase. Well, I was planning on building my brother a computer anyways so I can use my current mobo for that. Any suggestions of a new hyperthreaded mobo to go with my new processor:-) Thanx!
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January 9, 2004 1:47:26 PM

Abit IS7 is good for the money.

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<font color=red>Those of you who think you know everything are annoying to those of us who do.</font color=red> :wink:
January 9, 2004 3:54:31 PM

ASUS makes the best one in my opinion. Abit is good for the price. Dont touch the others.

Barton 2500+ @ 2200mhz (10x220 vcore @ 1.8)
Asus A7N8X Dlx 440 FSB
1gb Geil GD pc3500 Dual Channel (2-3-3-6)
Segata 80gb SATA 8.5ms seek
ATI Radeon 9800 Pro(420/720)
January 9, 2004 4:50:30 PM

Best bang for the buck Abit IS7.
January 9, 2004 4:51:23 PM

Next question what Ram are you using?
January 9, 2004 5:07:22 PM

With the P4T533, I am using RIMM PC4200 2 x 256. Not as impressed with it as I thought I would be.
January 9, 2004 5:36:02 PM

keep the PC4200 ram and use it on your new MB, you could probably OC that 2.6C upto 3ghz with stock HS/Fan.

I would recommend the Abit IS7, just got one myself, and I am very happy with this board so far!
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January 9, 2004 10:37:43 PM

Against my own advice I bought a P4C800-E instead of the Abit IS7. Wishing I would have gotten the IS7.

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January 9, 2004 10:44:22 PM

I like the reviews i've found on the Abit AS7 but how does it compare to the Asus P4P800 deluxe? I would have asked this question in the mobo section but this thread is already started.
January 9, 2004 10:57:57 PM

The pc4200 is rimm ( rd ) ram. It is not supported at this time for any 800 fsb mobo. He will have to get DDR ram.
Macoulombe, the problem with the P4c boards from asus stems from cpu voltage regulation. The Abit boards are generally better. (that from someone who owns mostly asus boards, three out of three at home right now.)
January 10, 2004 3:18:19 AM

Intel has 2 diffrent 18x chips, one with 100fsb Quad pumped, another with 133fsb , and finally the 200fsb.

P4 1.8ghzA(100x18)
P4 2.4ghzB(133x18)
P4 2.6ghzC(200x13)
January 10, 2004 12:56:42 PM

A bit off topic:
Quote:
and I highly doubt you can safely OC the northbridge to accomodate the 200 clock

If he could lock FSB:AGP:p CI ratio and had the right memory what would have stopped him from OCing to 200, the NB?

Got a nice overclocked overvolted system to keep you warm at night? That's great. Guess I'll have to settle for a woman...
January 11, 2004 3:44:49 AM

Thats right, the NB is designed to do 133 and going to 200 wouldnt make it, well not without voltage mods to the NB. Id bet the chip could ti, just a matter of how much Vcore is required. He'd be getting software corruptions and random blue screens. Ive had nothing but bad news with OCing 533fsb mobos to 800fsb.

Naturally you have to make sure the PCI and AGP bus is locked anyways.

And yes I have a over-volted system for the damn CPU would not do anything over 210 clock without at least 1.8 volts or Id get software glitches once in a while. At least it stays below 45 degrees celsius. The steppings for this chip supposed to bring great OC with little effort so Id wonder if AMD put the wrong stepping sticker on my chip for one of those crappy OEMs.

Barton 2500+ @ 2200mhz (10x220 vcore @ 1.8)
Asus A7N8X Dlx 440 FSB
1gb Geil GD pc3500 Dual Channel (2-3-3-6)
Segata 80gb SATA 8.5ms seek
ATI Radeon 9800 Pro(420/720)
January 11, 2004 6:40:00 AM

Did you change your nb heat sink? With my A7N board the hotest part is the area of the mobo around the north bridge. I checked it all out with an infrared thermometer. Heat dissapation to and from the nh hs sucks bigtime. Wish asus had used active cooling. Some thermal paste on the bridge would help to.
January 12, 2004 12:49:53 PM

The NB stay around 27-30c which is pretty cool.

Barton 2500+ @ 2200mhz (10x220 vcore @ 1.8)
Asus A7N8X Dlx 440 FSB
1gb Geil GD pc3500 Dual Channel (2-3-3-6)
Segata 80gb SATA 8.5ms seek
ATI Radeon 9800 Pro(420/720)
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