Fastest Celeron for an LX motherboard?

[RedRooster]

I'm pretty much out of the loop when it comes to Celerons/slockets and what they're all compatible with.
I need to find out what the fastest celeron I can put on this board is. I emailed the company to ask, but they don't seem to want to answer customer's emails. So, based on your experience, would I be limited to:

1) Whatever slot 1 chip I could put on there(Celeron 400 would be upper end?)
2) The fastest PPGA Celeron I could(533 with slocket)
3) The fastest 66Mhz FSB Celeron(766 with slocket)

 

[Adul]

Fastest I been able to go was a 366 in a LX MB. I sure other where able to get a faster chip in there. I doubt that you will be able to run anything aboove 533

 

[RedRooster]

Anyone have any more input?
The outlook isn't looking good.

 

[oldfart]

Maybe a C533 (not C533A). This is the fastest 66 MHz, 2.0 Vcore Celeron.

 

[Jhhnn]

Gotta go with the oldfart, a ppga 533 celeron is probably the fastest that board will handle. The 533 was the end of the line for the original 2.0v celerons. You'll probably need a socket adapter, a generic will run about $9.

 

[blackhawk]

The ppga 533 with a slotkit looks like it for you.

 

[thomsbrain]

<< The ppga 533 with a slotkit looks like it for you. >>

 

[FatMan42]

If you're assuming that the celeron will be used in a slocket adapter, does it matter what the v-core of the original CPU was? I mean, is it important whether you fit another 2.0V core processor, when the slocket will deliver lower voltages if demanded? So - using the voltage control on the adapter, what's to stop you using any random Cu-mine chip? It can't be that simple, can it?

 

[RedShirt]

Get a slocket adaptor

And a Celeron 766.

That is the fastest you could possibly go. (In spec)

 

[majewski9]

you cant go over 533! I know I have an LX board and that is the highest the multiplier will go. I got a 400 celly with a slockit!

 

[Jhhnn]

Hhmmm...

A normal slotket doesn't actually change the v-core, it just tells the mobo what v-core to provide. Most older boards won't go any lower than 2.0v, it's a design limitation. That's pretty hot for a fcpga processor, their normal voltage is considerably lower, 1.6 to 1.7v, IIRC.

While some older BX boards have been known to run fcpga processors without a bios update, I haven't heard of that being true for even older LX boards.

I don't think that the multiplier is an issue at all- modern Intel processors set their own multiplier, they're locked, this setting can be changed in the bios without effect. The multiplier can be 3x or 12x within the processor, this information is immaterial to the operation of the memory and other busses. I could be in error about this last bit, don't really think so.

Going beyond a ppga 533 celeron is a big risk, because of both the voltage and microcode issues. It seems unlikely that it would work.

 

[FatMan42]

OK- it's probably just my mis-understanding.

I thought that regardless of what the mobo is delivering (assuming the V-core [mobo] is >= V-core [slocket]) that the slocket would deliver what you've selected. i.e. the mobo thinks it's delivering 2.0v, you dial-in 1.7v to the slocket. The slocket delivers 1.7v to the CPU and dumps 0.3v. Electronics gurus - is this feasible? Surely that would be like a rheostat we use on fanbus's, wouldn't it? Hmm (new ideas...) - how about an on-the-fly variable V-core! Any takers... ?

Even if it's not how slockets work (but it would be great if that's what they did do!), does anybody think they could be 'modded' to behave this way. Or, or that beyond simple modding - the level that requires a new PCB device, start-from-scratch like?

 

[Damascus]

Were LX boards even around when the first Celeron 266 came out? I seem to
recall they weren't.

 

[AndyHui]

If the slotket requests a particular voltage, then that voltage will be delivered by the motherboard through the slotket to the processor without change. If the motherboard is incapable of delivering the voltage that either the processor, or the slotket request, then the system will not boot.

If you want the motherboard to deliver one voltage, but the slotket to deliver another to the processor, then you need one of those products from PowerLeap, which has an onboard VRM and transformer. A standard Slotket will not do the job.

In this case, I concur with the above: the fastest processor you could upgrade to is a PPGA Celeron 533MHz.