Max multiplier on BX6r2

[Ein]

The highest multiplier in my bios is 9, but will something with a 10x multiplier work as well? It seems some mobos will support multipliers that are higher than listed because the board will simply default to the locked cpu multiplier.

The reason I ask is because I'm debating a p3 1000e which I might o/c to 1333 or a c2 900/1000 which I WILL o/c to 1200/1333 since those things are dogs as 100fsb. Can anybody comment on how much slower the c2's are with the same fsb but half the cache of a p3?

Any help from you guys would be great...

 

[Johan]

The mobo will pick up the correct multiplier like you said.

Can't directly comment on C2 vs E-series P3s as I only ran a Celly 900 for a week or so. I'd expect the Celly to lag a bit in benchmarks but doubt most real world apps would show a difference.

 

[Ebola]

I had a p3 1000E cdo on my bx6 2. that chip had a 10 multiplier. worked fine. I got it up to 1290mhz.

if you can find an p3 1000E for a reasonable price then go with it.

 

[Overclocker550]

dude..........if that board doesnt have a 1/4 pci divider than you *will* not get it to 133fsb. 124 if yer lucky

 

[jazztrumpet216]

Yeah, overclocker is right, if you don't have the 1/4 divider you prob. won't get it up there. But Ebola's gotten it to 129, so it can be done.

C2's are rumored to be on par with a P3 around 200MHz faster (this means that a 900MHz Celly is about equal to a 700MHz P3, due to cache size mainly, but other things do affect it on a smaller scale).

 

[Ein]

I was pretty sure that bx6r2's could do 1/4 dividers... I better check.

I'm probably going with that 1.1A celeron with that mod that allows you to run it in bx boards. 1.5 ghz here I come! I love my bx board....

 

[Ebola]

it has a 1/4 divider for 117, 124, 133, 145?

 

[RainMaQer]

it has a 1/4 divider for 117, 124, 133, 145?

Yeppers... the fsb goes over 150 I believe and it has 2 117 FSB options.. one at 1/3 pci and one with 1/4 pci... everything above 117 FSB is 1/4 pci. It does have a limiting factor of the agp only having a 2/3 divider. Therefor at 133 the agp would be 89 Mhz. I was able to run 133 fsb on my P3B-F (same 440bx chipset) with a P3 750@1000. It can be done and its not that difficult. Most modern vid cards (agp) can handle the high agp bus speeds. With Ebola's BX6r2 and 1000e I was able to hit 129 fsb but with only air cooling I wasn't able to go any further. I was watercooling the 750@1000. So with good cooling you can do it

 

[Peter007]

I can help

I got a Celeron 900 Overclock to 1287mhz on my Abit BX6,Rev2

1. Although my Multiplier only support up to 9x, the board
will do 10.5x and beyond. So don't worry about the multiplier setting. I'm running a Celeron 700 right now with multiplier of 10.5X, way beyond the Motherboard claim support of maximum of 9x.

2. Abit BX6-R2 definitely have 1/4 PCI divider

3. I was able to overclock my Celeron 900 to 1200mhz at default voltage. and 1287mhz with slight voltge jump, and post at 1333mhz

Hope that clarify some confusion

 

[Overclocker550]

and what about the chipset limitation? I doubt the clock generator can go so high

 

[Ein]

Doesn't seem like a problem, people have gotten their bx chipsets pretty high, about 1.8 ghz.

 

[Overclocker550]

im talking about fsb. my abit bh6, which is only a few months older than the bx6-2 wont do 124fsb and its not my other hardware, since ive ran 124fsb on a newer mobo no problem with 1/3 pci

 

[Ein]

The thing is that I'm pretty sure the clock generator is separate from the chipset.

I recall the bx6r2 being more stable than the bh6, but that was a long time ago that I knew my bx stuff, so I'm not sure.

 

[Peter007]

I owe both Abit BH6 as well as the BX6-R2, and I can clarify the differences.

1. ABIT BH6 has the fellowing FSB: 66/75/83/100/112/124/133 (103-turbo) and a FIXED PCI 1/3 Divider

2. ABIT Bx6r2 has the same 66/75/83/100/112/124/133, as well as the 117mhz, 124mhz, 138mhz, 143mhz, 148mhz, and 153mhz.
However, Abit Significantly improve over the BH6 by adding a 1/4 PCI Divider

This is evident in the BIO in which you actually have 2 choices for 117mhz. (1) 117mhz - PCI /3 or (2) 117mhz - PCI /4

In Bx6-R2, anything above 117mhz automatically get the PCI Divider of 1/4. This is a great thing
because in the BH6 - PCI 1/3 Divider make its 124/mhz and 133mhz unuseable!

Here is what I mean, the table indicate the acutal PCI speed:

FSB BH6 (1/3) BX6-R2 (1/4)
124mhz 41mhz 31mhz
133mhz 44mhz 33mhz
153mhz not available 38mhz

As you can see, the Bx6-R2 has FSB all the way to 153mhz that is useable

Which is why it also cost around $40 more at the time of its introduction.

 

[Overclocker550]

then explain, smart guy howcome I can run 83fsb on a lx mobo just fine with 1/2 pci divider? also bx boards should support a 1/2 pci divider for 66fsb! and a few people have reported success using 124fsb on a bh6. and I have a MSI mobo with 1/4 pci divider, yet above 135fsb, it locks up or wont boot and its not my cpu!!!!!!!!!

 

[Ebola]

the lx chipset came out before the bx chipset and I believe it was ment for 66 mhz frequency processors.

I had a celeron 466 that I could run at 582 mhz. yes thats 83 fsb 1/2 pci on a bx board. it was somewhat unstable. 41 pci is generally bad for your hardware and wont always work. whats your point Overclocker550?

 

[Lyron]

It's not fixed at 1/3, it only goes up to 1/3...
124mhz fsb works fine with my hardware...
@ 133mhz the ide controller and/or hard drive is unstable...

 

[Peter007]

Overclock 550
howcome I can run 83fsb on a lx mobo just fine with 1/2 pci divider

You're compare Apple to Oranges. I don't know what kind of LX motherboard you're talking about and I have no reference to that motherboard.

the relevant topic here is FOCUS only on the Abit BH6 versus the BX6-Rev2. I own them and I can explain their differences, as well as testifying to the fact that BX6-Rev2 is indeed superior to the BH6 in that the 124, 133, and the higher FSB are useable. That is all

As for your LX motherboard and its ability to run 1/2 PCI divider,
and why your abit BH6 failed at such speed.....is something I cannot comment on.

There are just too many factors to be isolated
1. It could be your PCI components in your BH6 not liking 41mhz PCI speed. or
2. It could also be your Maxtor/IBM hardrive which reports to have some problem at 41mhz pci bus speed, since fsb affect the IDE channel as well
3. It could also be just your ABIT BH6 is inferior to other's ABIT BH6 around the Forum. I did notice tha the ABIT's quality isn't what it used to be.

Just remember that if someone else' ABIT BH6 can do 124fsb reliably doesn't mean you can do the same as well. The main culprit is that 1/3 PCI divider.

I think ABIT is smart and recognize this deficit and release the ABIT BH6 rev 1.1 and the Bx6-rev2 to have the 1/4 PCI divider update.

As fo EIN, I hope everything works out well for you
Which CPU have you decided to settle on?
Some people have success modding the Tualatin to work on the ABIT Bx6-rev2, perhaps it is worth a look

 

[Ein]

Yep I'm definately going with a 1.1A Celeron and modding it. Not worth it for me to spend 130 on a p3 when it's pretty much the same chip.

Thanks for all the clarification though. I'm glad my BX6r2 can go for another year or so before I retire it to server use or something...