Best speed/price ratio PIII/Celeron for 440bx slot 1 mobo?

[zulu]

O.k. I have:
Aopen ax6bc SLOT 1 mobo (can run at 100MHZ FSB Stable, Multiplier up to 8.5)
196MB Huinday RAM AT 100MHZ
Radeon 32 DDR (LOVE it)
OLD p2 333 @ 411
Question: what Pentium 3/ Celeron will take me as high as 800-900, with my MOBO?
Pentium 3 800Mhz Slot 1 is very expensive, and Celerons don't match SLOT1.
What would you suggest?
Thanks.

[Bigwave]

p3 700,plain and simply the best bang for the buck p3

[marty]

The multiplier in your BIOS or on any dip switches on the motherboard will have no effect on any current Pentium or on any Celerons. The multiplier is locked by the chip (Intel did this to discourage mismarking of chips that is falsely labeling a chip with say a 3 multiplier as a chip with a 3.5 or 4 multiplier. People did this to cheat unsuspecting chip purchasers.)

As for your question you will be better off trying to up the FSB from 66 to 100 or something in between. To do this you would purchase a Celeron and a Slot 1 to Scoket 370 adapter.

It also helps if your motherboard allows you to raise the CPU voltage a bit. You may also be able to control the voltage with the Slot 1 to Socket 370 adapter.

I am sure someone will suggest the best adapter for you and as far as the best Celeron my guess is a 600 but use someone else's suggestion or look at posts to see if I am correct. (See if others on this board and similar boards have had luck with the Celeron 600.) On this site there is a CPU database. The average overclock result for the Celeron is 913. Notice that many of the overclock results show a voltage setting of 1.85 more or less. More than 1.85 is more likely to fry your new Celeron. Some are running the Celeron at 2.1 volts. This is very high for a chip designed to run at 1.65 volts!

Also don't forget to get a good heatsink/fan combo. I don't know which is best for a Slot 1 to Socket adapter, but you have to be careful about how much space you have on your motherboard for the adapter plus fan!

It also may help to have intermediate FSB selections available for your motherboard. Does your board so 75 or 87 FSB ? If the chip won't make 100 you can sometimes still get a lot for your money by using an intermediate FSB. An 87 FSB with a 9 multiplier will give you about a 783 MHz system.

[marty]

I assumed that your 100 FSB comment meant that you can't run the motherboard at 133 FSB. If you can run at 133 and can choose speeds between 100 and 133 then I agree with Bigwave. The PIII 700 is the way to go. I am typing this on a 700 overclocked to 933 that I tested last night at 959.

If you get a 700 make sure it is a cCO. Mine is a cBO which was an earlier chip and I believe the cCO is reported to overclock more easily.

Some vendors will try the chip for you to see if it will overclock. They then charge a bit more for those that will as compared to discounting a bit for those that won't.

[zulu]

As I know, my MOBO's max. multiplier is 8.5, but Celerone 600 is 9*66MHZ.
Is it O.K? Does the MOBO accepts higher mult. than it designed?
Or a slotkey eliminates this problem?

[marty]

The motherboard can't control the multiplier. It is set by the Intel chip. See my previous post.

What is the highest FSB? Is it 100 or 133? Are there steps between 66 and 100 and 133???

[batboy]

What Z is worried about is that his BIOS only supports up to a 8.5 multiplier. Some motherboards have BIOS updates available, most of the time a good slotket adapter takes care of that problem if you're looking at using the Celeron. Otherwise, just get a 700 slot 1 P-III like was suggested.

Ok, I just reread the first post. He wants 800-900, so maybe finding a Celeron 566 brfore the supply runs out. They are 8.5X and most will overclock to 100 bus speed for a total of 850 MHz. You might have to raise the default CPU core voltage a little. Even with having to buy a converter slotket, it's still really cheap. If you want to use a nonoverclocked P-III, then 850e would be the max you could use.

[GauntMan]

I have the exact same MOBO. I´m running a
Cely2-600@900 with a MSI 370 to Slot 1 converter. The converter allows setting the voltage from 1.5V - 2.0V. I´m currently runnig mine at 1.75V. No problems. I might go higher. With version 2.55 of the BOIS you can set the fsb to:

66, 68, 74, 83, 100, 104, 112, 124, 133.

/GM