Currently I have Asus P2B motherboard which states that it supports Pentium II and Celeron. I found the market sells Slot 1 Pentium III but will my motherboard be able to support it. Another question here, let's say I want to get a Celeron 800 or PIII 800 socket 370 of course I have to get the Slotkets to use either of the processors on Slot 1 but the problem is whether my motherboard supports Celeron 800 or PIII 800?Asus P2B can have 100 Mhz bus speed and if I get the Coppermine Celeron 800 Mhz which is 100 Mhz as FSB, does my mobo support it?If my mobo supports both the processors, i still don't know whether it can have the voltage lower than 2.0 the old celeron because the new celeron uses 1.5 i think..anyone please help..thanks a lot..
Celeron 800 / PIII 800
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chaotictech
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If you get a slotket from asus, abit or msi it(the slotket) will have voltage adjustments.
If you ever stop learning, YOU'ER DEAD!!
If you ever stop learning, YOU'ER DEAD!!
yes you need to update the BIOS so that it can correctly recognise the CPU, and get a good slotket, like the Asus S370-DL instead of going for a slot1 processor - it would be cheaper as well as flexible.
here is the Asus Techref page from Asus about processor compatibility and BIOS updates needed.
Hope it helps.
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
here is the Asus Techref page from Asus about processor compatibility and BIOS updates needed.
Hope it helps.
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
so my motherboard will follow the voltage set using the Slotket right?my revision is 1.03 ..i want to get a celeron 800 with 100 mhz FSB actually..so does it support this processor?
chaotictech
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Any good slotket will alow fsb coices of 66/100/133mhz fsb and voltage from 1.3-2.?. I'd go with the asus. Its the best one I've used.(out of the many). And yes your mobo will run the proc at whatever voltage and fsb you set on the slotket at as long as the mobo supports it.(officially or not). And I always update the bios if there is one more current than the one I'm using.
If you ever stop learning, YOU'ER DEAD!!
If you ever stop learning, YOU'ER DEAD!!
so that means... i don't have to update my BIOS in order to install the new celeron 800 or PIII 700? but i read from another forum a person told me...i must update BIOS in order for the mobo to detect the processor..
Yes, update the BIOS, then your P2B will recognise your brand new processor porpeply.
A good slotkey (like the Asus one) will tell you how to set voltage, fsb etc. or just set everything to auto.
If you buy Celeron, then it should be easy.
If you buy PIII, you may need to tackle the 133mhz fsb problem. If you buy PIII 800E, this is 100mhz fsb CPU, if you buy 800EB this is 133mhz fsb CPU.
More information for 440BX motherboards at 133mhz fsb here:
<A HREF="http://www6.tomshardware.com/mainboard/00q1/000308/index.html" target="_new">http://www6.tomshardware.com/mainboard/00q1/000308/index.html</A>
A good slotkey (like the Asus one) will tell you how to set voltage, fsb etc. or just set everything to auto.
If you buy Celeron, then it should be easy.
If you buy PIII, you may need to tackle the 133mhz fsb problem. If you buy PIII 800E, this is 100mhz fsb CPU, if you buy 800EB this is 133mhz fsb CPU.
More information for 440BX motherboards at 133mhz fsb here:
<A HREF="http://www6.tomshardware.com/mainboard/00q1/000308/index.html" target="_new">http://www6.tomshardware.com/mainboard/00q1/000308/index.html</A>
sorry, here is the linkified version:<A HREF="http://www.asus.com.tw/products/techref/Cpu/Coppermine/index.html" target="_new">Asus Techref page</A>
the processor will work with the voltage set on the slotket. for a motherboard, it appears to be a old slot1 processor obeying old specs. anyway the motherboard does not have to work with settings on the slotket, they are never used outside the processor. all you need is lower Vcore, that is core voltage. The I/O voltage is still 2.4~2.5V that the board is interfaced with, on socket370 or slot1 processors.
so now that the processor gets proper core voltage and it is connected to the motherboard with proper links now it needs to be identified correctly. A BIOS update will add the information about this processor and let the motherboard show it properly. Its like the processor is ready to work with the hardware, but it first needs to be introduced formally! 🙂
Most of the times, once the hardware part is done it works. but with newer processors and BIOSes probabely it wont boot at all! I had a old BX board that had a P-III 450 MHz, but it would show P-II at bootup. It worked but dint recognise the CPU properly.
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
the processor will work with the voltage set on the slotket. for a motherboard, it appears to be a old slot1 processor obeying old specs. anyway the motherboard does not have to work with settings on the slotket, they are never used outside the processor. all you need is lower Vcore, that is core voltage. The I/O voltage is still 2.4~2.5V that the board is interfaced with, on socket370 or slot1 processors.
so now that the processor gets proper core voltage and it is connected to the motherboard with proper links now it needs to be identified correctly. A BIOS update will add the information about this processor and let the motherboard show it properly. Its like the processor is ready to work with the hardware, but it first needs to be introduced formally! 🙂
Most of the times, once the hardware part is done it works. but with newer processors and BIOSes probabely it wont boot at all! I had a old BX board that had a P-III 450 MHz, but it would show P-II at bootup. It worked but dint recognise the CPU properly.
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
oh i c...
grish:u cleared all my doubts hehe but one thing if u go the site EdPhoon gave, my mobo only supports 100 mhz stuffs but if i update Bios is it possible?
EdPhoon: hmmmm to tackle that problem,me of coz need to get a pc 133 ram..but i don't know whether Geforce 2 GTS 32 mb can take the extra Mhz.. and my pci slots too
grish:u cleared all my doubts hehe but one thing if u go the site EdPhoon gave, my mobo only supports 100 mhz stuffs but if i update Bios is it possible?
EdPhoon: hmmmm to tackle that problem,me of coz need to get a pc 133 ram..but i don't know whether Geforce 2 GTS 32 mb can take the extra Mhz.. and my pci slots too
your board p2B does not officially support 133 MHz FSB, so you will need to overclock it. Getting a PC133 RAM wont make it work at 133 MHz, it will drop down to 100 that the processor supports. You will need to force it to ru a 133 or closer to that speed in order to run a 133 MHz FSB processor. You might need to improve the procesor cooling, and put a chipset cooler on the 82443BX chip on the motherboard.
If you have a FSB 100 MHz processor, your memory will run at 100 MHz even if its rated at 133. The GeForce GTS card is a 4X card but will run at 2X which the BX chipset supports but your PCI bus may not. You can set the FSB so that the PCI clock is about 38 MHz, i.e. 114 MHz so that the IDE controller on the PCI bus wont create a problem.
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
If you have a FSB 100 MHz processor, your memory will run at 100 MHz even if its rated at 133. The GeForce GTS card is a 4X card but will run at 2X which the BX chipset supports but your PCI bus may not. You can set the FSB so that the PCI clock is about 38 MHz, i.e. 114 MHz so that the IDE controller on the PCI bus wont create a problem.
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
i am going to get myself a celeron 800 and that has 100 mhz FSB
i don't think i have to change anything except for updating my BIOS, get a SlotKet and emmm that's all I guess. I do understand the memory part thanks for all of ur help.
i don't think i have to change anything except for updating my BIOS, get a SlotKet and emmm that's all I guess. I do understand the memory part thanks for all of ur help.
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If you overclock it to 133FSB, only your video card and processor are affected. The affect on the processor is desireable, in that you can overclock a PIII 700 to 933 that way. The affect on the video card is not worth worrying about if you have a newer video card, such as an MX, GTS, Radeon, etc. In fact it doesn't even seem to affect the TNT2.
I recommend the PIII 700@933 using the slotket, it will be much faster than any celeron. And becuase it needs a 133 bus to get it to 133, I recommend PC133. PC133 is cheap right now, you can get what you need for $20 including shipping.
Back to you Tom...
I recommend the PIII 700@933 using the slotket, it will be much faster than any celeron. And becuase it needs a 133 bus to get it to 133, I recommend PC133. PC133 is cheap right now, you can get what you need for $20 including shipping.
Back to you Tom...
why my PCI slots is not affected? i scared my HDD will lose all the data for some reason i forgot..
additional cooling?
additional cooling?
your PCI slots <i>are</i> affected. they now run at a frequency higher than normal - that is higher than 33.3 MHz. But they are overclockable to a certain extent. What isnt overclockable is the PCI-IDE controller that sits on the bus. It cant usually go past 38 MHz, so you have to limit your FSB to under 3x or 4x of 38 depending on the FSB.
If there are no IDE controllers on the PCI bus, it just might get to 40, people have got their IDE working at 40 but its very rare.
BTW a onboard PCI-IDE does use a slot on the board but you dont have a physical slot on the motherboard. Its a logical slot - set of PCI signals from the chipset that are supposed to be connected to a slot soldered on the motherboard. Most chipsets support 6 or more PCI slots, some give out 3~5 PCI slots on the board while the rest are used to work onboard devices. Sice PCI clock speed is common to all, even a single device that refuses to work at higher speed would make you to speed it down.
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
If there are no IDE controllers on the PCI bus, it just might get to 40, people have got their IDE working at 40 but its very rare.
BTW a onboard PCI-IDE does use a slot on the board but you dont have a physical slot on the motherboard. Its a logical slot - set of PCI signals from the chipset that are supposed to be connected to a slot soldered on the motherboard. Most chipsets support 6 or more PCI slots, some give out 3~5 PCI slots on the board while the rest are used to work onboard devices. Sice PCI clock speed is common to all, even a single device that refuses to work at higher speed would make you to speed it down.
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
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Girish made a mistake. The BX shipset was designed in the days when certain old PCI cards were made to run at 25MHz. So the engineers included a 1/4 PCI divider. At 1/4 133MHz, the PCI will run at 33MHz. At 100MHz, the 1/3 divider is used, giving you 33MHz again. At 66MHz, the PCI divider of 1/2 is used, giving you 33MHz still! So the BX can run your PCI at 33MHz at any of these bus speeds.
No such precautions were taken with the AGP bus. It runs at either 1/1 (designed for a 66MHz FSB) or 2/3 (designed for a 100MHz FSB). So at 133 the AGP is running 89MHz, but the PCI is still at 33MHz. Most video cards can take this minor amount of abuse.
Back to you Tom...
No such precautions were taken with the AGP bus. It runs at either 1/1 (designed for a 66MHz FSB) or 2/3 (designed for a 100MHz FSB). So at 133 the AGP is running 89MHz, but the PCI is still at 33MHz. Most video cards can take this minor amount of abuse.
Back to you Tom...
girish mentioned about PCI-IDE..how about that?and whether any additional cooling needed after overclocking from 700 to 933?
Yes, there were <i>some</i> PCI cards running at 25 MHz and they were being phased out. Care was taken so that the PCI runs at 25 or 33 MHz which are standard PCI frequencies (the FSB was upped to 33 from 25 in 486 times). The key device on the issue is the PCI-IDE controller, which resides in the PIIX4 Southbridge 82371EB of the 440BX chipset, which natively supports 33 MHz operation, so 25 MHz PCI was just for legacy support. The BX chipset was made to run with 100 MHz FSB, <i>and</i> had to be backward compatible with the LX/EX chipsets. So the PCI speed was by default 33 Mhz and not 25 MHz. This speed could not be overclocked to beyond 38 MHz which most overclockers have succeded but faster than that is extremely rare. The culprit is the IDE controller, which would run fine when undersped at 25 MHz or its rated speed 33 MHz but wont run much beyond that. Probabely this has to be attributed to the inability of the IDE interface which most disks implement that cannot transfer data that fast. Its actually a limitation in there!
I guess those who have succesfully run their IDE controllers at 40 or more MHz had better hard drives that supported this overspeeding, or just plain lucky!
Actually the BX chipset was never intended to run at speeds higher than 100 MHz, so the AGP divider was probabely skipped. Yet, even at 89 MHz, thats overclocking by about 30% modern cards are fine. But not the older AGP2X cards which in fact were rarely even exposed to such stresses in the reign of the BX.
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
I guess those who have succesfully run their IDE controllers at 40 or more MHz had better hard drives that supported this overspeeding, or just plain lucky!
Actually the BX chipset was never intended to run at speeds higher than 100 MHz, so the AGP divider was probabely skipped. Yet, even at 89 MHz, thats overclocking by about 30% modern cards are fine. But not the older AGP2X cards which in fact were rarely even exposed to such stresses in the reign of the BX.
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
so is it possible to overclock 700 to 933 using my Asus P2B mobo and not affecting anything like my HDD?
Actually, PCI clock is a fraction of the FSB so even if you have it set to CLK/3, for 100 MHz FSB it would be actually just 44.3 MHz at 133 which still is way too high. You will need to set this divider to CLK/4 so that it it stays at around 33.
That is why I said FSB must be 3x or 4x of 38 whatever needed. That means it could be 114 MHz or 152 MHz to run the PCI at 33 MHz. This is a major limiting factor since, if you attemp to run the FSB at 133, only then the PCI will run at 33 MHz! If your processor is running fine at 133, then its okay, but <b>should you need to reduce the FSB</b> to under 133, CLK/4 would run the PCI too slow (<font color=red><</font color=red>33), CLK/3 would make it too fast (<font color=red>></font color=red>38).
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
That is why I said FSB must be 3x or 4x of 38 whatever needed. That means it could be 114 MHz or 152 MHz to run the PCI at 33 MHz. This is a major limiting factor since, if you attemp to run the FSB at 133, only then the PCI will run at 33 MHz! If your processor is running fine at 133, then its okay, but <b>should you need to reduce the FSB</b> to under 133, CLK/4 would run the PCI too slow (<font color=red><</font color=red>33), CLK/3 would make it too fast (<font color=red>></font color=red>38).
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
yes thats no problem, you might need to get a better cooler, for both the processor and the chipset and probabely need to increase the core voltage a bit.
the PIIX4 southbridge wont support PCI speeds faster than 38 MHz as overclockers database shows, but modern IDE controllers on 82801AA/AB/BA ICHs do work at 40+ MHz! Since you have a older chipser, you must be careful with that. In fact you could experiment with a spare IDE disk you have until it starts getting errors. ;-)
For 133 MHz FSB, we could use the CLK/4 divider (originally intended for 100/4=25 MHz PCI bus) to get it work at 33 MHz, that no problem there!
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
the PIIX4 southbridge wont support PCI speeds faster than 38 MHz as overclockers database shows, but modern IDE controllers on 82801AA/AB/BA ICHs do work at 40+ MHz! Since you have a older chipser, you must be careful with that. In fact you could experiment with a spare IDE disk you have until it starts getting errors. ;-)
For 133 MHz FSB, we could use the CLK/4 divider (originally intended for 100/4=25 MHz PCI bus) to get it work at 33 MHz, that no problem there!
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>
according to crashman, i thought my motherboard will handle the dividing part automatically?i am pretty confused over here still..
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