440ex

[Guest]

Hi got a motherboard with intel 440ex chipset, says in manual you can ownly run a Pent 2 233-330MHZ CPU, does any one know if it is possible to run a Celeron 700MHZ[with convertor card]?
thanks for help

 

[jlanka]

Depends on the motherboard, not the chipset. What kind of board is it? What does the manual say as far as clock speed, FSB speed, core voltage, etc?

 

[Guest]

The mother board is a J-ZXB
FSB=66,68,75 or 88Mhz
cpu ration is 3/3.5/4/4.5 or 5X

 

[jlanka]

So I think the answer would be 88 * 5 = 440 Mhz. Better than a 233 but not what the processor is rated for. You make the call.

 

[Guest]

jlanka
I wasn't asking if I could overclock the exisisting chip. i was asking if I could replace it with a Celeron 700mhz chip

 

[jlanka]

>I wasn't asking if I could overclock the exisisting chip. i was asking if I could replace it with a Celeron 700mhz chip

And thats what I was answering. You would be running your 700 Celeron at 440.

 

[Guest]

I thought that Celeron were locked at 66mhz

 

[jlanka]

I think its the clock not the bus speed thats locked. Could be wrong.

 

[jlanka]

I guess the bottom line is that you'll be able to run it, just not at 700 Mhz.

 

[Crashman]

NO, it won't work, your motherboard will not support Coppermine chips YOu might be able to use a 533 PPGA in a converter card. Since these are clock locked, the multioplier shouldn't even matter.

Cast not thine pearls before the swine

 

[jlanka]

>your motherboard will not support Coppermine chips

True. Forgot about that.

>YOu might be able to use a 533 PPGA in a converter card

Probably th best you can do. Since your board won't drive it that fast anyway, it will save you some money.

 

[Guest]

Thanks for your help jlanka and crashman
Think I'll end up replacing motherboard and chip sometime when I've got enough cash.

cheers

 

[jlanka]

duh. I just read the Intel web site. Turns out the 440EX is a derivative of the 440LX, for MicroATX. I thought it was a derivative of the 440BX. Thats where I made my mistake. Sorry about that.

 

[Crashman]

You are most likely mistaken. I threw one in an old AST LX motherboard that was only supposed to go to 333, and it worked at 533. These things have internal multipliers. They will always run at whatever multiplier they have internally. You cannot clock them down. BIOS might not give the right number on the POST screen, but that is only because it doesn't recognise a higher number-a CPU test will tell you the true speed.

Cast not thine pearls before the swine

 

[jlanka]

Interesting. I was always under the impression that the MB multiplier firmware couldn't be "penetrated" by a higher clock locked CPU. Learn something new every day. Thanks Crash.

 

[jlanka]

Wiat a minute. If thats true, then the "Clock Locking" that Intel instituted to defeat overclocking and supposedly spur more sales actually has the reverse effect. Because the clock is locked HIGHER than the MB is able to go, it is forced into running at that speed. If the CPU wasn't locked, the MB would only be able to drive it at it's highest clock multiplier. Therefore you can squeeze some more life out of an older MB. HAHA. The jokes on you Intel!

Good one.

 

[Crashman]

Hey, it works with AMD K6-2's two. When you set the multiplier on a Pentium motherboard to 2x, it enables an internal 6x multiplier-for those, when BIOS reads 133, WCPUID reads 400!

Cast not thine pearls before the swine

 

[jlanka]

That rocks!

 

[girish]

hi
intel cpus are multiplier locked, AMD cpus arent.
so its the multiplier you cannot change, but as long as the fsb is 66, all multipliers should work.
just that the bios wont display the right number. if you use a higher multiplier cpu that the bios doesnt recgnise, you arent exactly overclocking you board, its still working at 66 MHz, and cpu is doing its stuff as programmed by intel.



<font color=blue>die-hard fans don't have heat-sinks!</font color=blue>

 

[Crashman]

Well put, except for the minor detail of the K6-2 having an OPTIONAL 6x multiplier that has to be enabled by setting the multiplier to 2x. But that is irrelavent for slot 1 boards, which can only accept Intel CPUs.

Cast not thine pearls before the swine

 

[fuSEboX]

Intel processors are multiplier locked, but, it really doesen´t matter if the mb doesn´t support teh correct multiplier. I Have a p2b with a celeron 533, The mb doesn´t habe the 8x multiplier i need, but it won´t matter the celeron is still running at 533. You can actually overclock the processor by changing the fsb instead, without regards to multiplier lock

 

[Crashman]

Yes, all of mine are overclocked in this fashion.

Cast not thine pearls before the swine