Tbird 850/100=8.5; 133x8.5=1,130.5MHz; Will Global Win FOP32-1 cool enough?

[bupkus]

Tbird 850/100=8.5 133x8.5=1,130.5MHz. Will Global Win FOP32-1 provide enough cooling?

If I don't change the multiplier, will I have enough cooling power from the FOP32-1, or do I need to either change the multiplier to 6.5 or get a better HSF?

 

[skay]

I severely doubt that you will be able to get the Tbird to run well at any FSB speed past 110-112Mhz. With some extreme cooling you might get it to 115, but most people have had very little luck pushing their FSB speeds very high. They just don't react the same way that the Pentiums do.

 

[todays]

The new DDR boards and several KT133A boards have run fsb up to 155Mhz. One place I saw got one to 158Mhz on a new KT133A. But yes, I agree, If you have the older KT133 you won't get past about 110-112 Mhz fsb.

 

[bupkus]

I'm waiting for a KT133A mobo now. I haven't ordered the cpu yet, but the best price seems to be the 850 TBird. I wonder why the prices on pricewatch for the 800 & 850 TBird are so close.

I'm just curious how high I can take that cpu with the Global Win FOP32-1 whatever the mobo is. The question for me is, "will that HSF take me to a reasonable level of overclocking of the 850 TBird?"

Given that I can use that HSF to take a TBird to about a Gig, then I can ask which multiplier I should use combined with my new Mushkin Rev. 1.5 dimms?

You may have guessed that I haven't overclocked before, and you'd be right. I'm hoping I understand what I'm talking about and not just guessing, which I suppose I am.

 

[kylebisme]

the heastsink is a good choice, however you will probably have to lower the mutiplier unless you go with some realy serious cooling. it would probably be best to start with 133x6.5 but then shoot for more out of the multiplyer you might well see x8, but if you get x8.5 your very lucky. then it would be best to back off the multipier to give yourself some room to push the front side bus and see how far the ram can go.

 

[kn7671]

The problem with the Athlon/Duron CPU's for running at 133mhz FSB is not the CPU!!!!! Let get that cleared up. The problem is with the current Via KT133 chipset. This chipset was designed to support PC133 RAM, not the 133mhz FSB, although it is an option in the BIOS. The KT133 chipset is usually limited to around 110mhz, some better, some worse. It has been found that this is probably a cooling issue for the slight variance, but the chipset is still limited to the range of 110mhz FSB. The KT133A, "A", is the newest chipset that does infact support the 133mhz FSB option for CPU's... The current Durons and TBird's will run at 133mhz, and faster FSB speeds, depending on memory and other components being able to run above specified bus speeds. The only kicker here is that in some cases the multiplier will have to be lowered to accomadate the higher FSB since the CPU's still have a limit to maximum speed. For instance, a Duron 850, which is 8.5 x 100mhz, would have to run at 1133mhz on the 133mhz FSB, not possible. The Duron 700, 7.0 x 100mhz, would run on a 133mhz FSB with no problems, in most cases, bringing the speed to 933mhz. The TBirds that are made in the aluminum process will be limited even more so, and will require the multiplier be set down more often than the Duron's multiplier.

 

[kn7671]

The problem with the Athlon/Duron CPU's for running at 133mhz FSB is not the CPU!!!!! Let get that cleared up. The problem is with the current Via KT133 chipset. This chipset was designed to support PC133 RAM, not the 133mhz FSB, although it is an option in the BIOS. The KT133 chipset is usually limited to around 110mhz, some better, some worse. It has been found that this is probably a cooling issue for the slight variance, but the chipset is still limited to the range of 110mhz FSB. The KT133A, "A", is the newest chipset that does infact support the 133mhz FSB option for CPU's... The current Durons and TBird's will run at 133mhz, and faster FSB speeds, depending on memory and other components being able to run above specified bus speeds. The only kicker here is that in some cases the multiplier will have to be lowered to accomadate the higher FSB since the CPU's still have a limit to maximum speed. For instance, a Duron 850, which is 8.5 x 100mhz, would have to run at 1133mhz on the 133mhz FSB, not possible. The Duron 700, 7.0 x 100mhz, would run on a 133mhz FSB with no problems, in most cases, bringing the speed to 933mhz. The TBirds that are made in the aluminum process will be limited even more so, and will require the multiplier be set down more often than the Duron's multiplier.

 

[DaddyG]

Bupkus,

You should really start off at 6 x 133mhz. Keep upping the fsb till you find the limits of your system, could be your Mushkin, could be the higher PCI bus. Be careful with your testing, overclocked PCI doesn't always fail hard, sometimes HDD get slower, error retries, before the fail completely. When you have determined the max FSB, up the multiplier SLOOOOOWLY.

Max performance of the FOP will come with lapping and Arctic Silver. Upgrading to the Delta Black Label 37cfm is an option if you can stand the noise. Good case cooling is a must.