Older ASUS board - RAM + CPU problem

[Guest]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Hi all ASUS users..

I don't suppose anyone has tried to ressurect an older P2B-F board?
I'm assembling a clunker from spare parts and have accumulated a P2B-F (rev
1.0) board, a PIII 600EB Slot 1 CPU and assorted pieces of PC 100 SDRAM.
totalling 576 MB

The problem is getting the sytem to recognize the correct CPU with all the
RAM.
If I set the jumpers as indicated in the manual, the BIOS will report the
CPU as a PIII 450.
If I fool around with the frequency multiplier/bus frequency jumpers so the
system reports the correct CPU speed, it will only see 320MB RAM
It should be 100Mhz x 6.0, but that will only give me 450Mhz!!?
RAM is all double-sided PC 100 and tested OK.
BIOS is the latest from ASUS for that model......(113A I think)
By tweaking the jumpers I'm able to get it to recognize the CPU as a 515 MHz
processor with all RAM recognized - and that's it.
It actually runs not too bad. It's usable, even with XP PRO, but the fact
that there's another 85 Mhz going to waste is annoying.

Anyone know of a fix?
Cheers

Doug

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

The 600EB uses a 133 MHz FSB (front side bus), and runs at 4.5X133.

I don't know about the P2B-F board, but some mainboards using the 440BX
chipset permit setting the PCI divider to 4. Set the bus frequency to 133,
and the divider 4 sets the PCI bus to the normal 33 MHz. (The AGP bus
divider can't be set to the proper number, so it's overclocked at 89 MHz.
That's OK for some graphics cards, like a Geforce 4200.)

If you want the maximum performance, you'd need PC133 RAM. If you're using
256 MB DIMMs, they must be low density. (All of the low density 256 MB DIMMs
I've seen used 16 chips, but I don't know that is required.) It may also be
possible to set a memory ratio so that PC100 will work at its usual
frequency.

If you don't wish to mess with all that, find a CPU with a 100 MHz FSB.
You'll still need low-density DIMMs, though.


Address scrambled. Replace nkbob with bobkn.

"Doug Leal" <Dougie@lealhouse.com> wrote in message
newsHtPe.1420$Rc.429543@news20.bellglobal.com...
> Hi all ASUS users..
>
> I don't suppose anyone has tried to ressurect an older P2B-F board?
> I'm assembling a clunker from spare parts and have accumulated a P2B-F
> (rev 1.0) board, a PIII 600EB Slot 1 CPU and assorted pieces of PC 100
> SDRAM. totalling 576 MB
>
> The problem is getting the sytem to recognize the correct CPU with all the
> RAM.
> If I set the jumpers as indicated in the manual, the BIOS will report the
> CPU as a PIII 450.
> If I fool around with the frequency multiplier/bus frequency jumpers so
> the system reports the correct CPU speed, it will only see 320MB RAM
> It should be 100Mhz x 6.0, but that will only give me 450Mhz!!?
> RAM is all double-sided PC 100 and tested OK.
> BIOS is the latest from ASUS for that model......(113A I think)
> By tweaking the jumpers I'm able to get it to recognize the CPU as a 515
> MHz processor with all RAM recognized - and that's it.
> It actually runs not too bad. It's usable, even with XP PRO, but the fact
> that there's another 85 Mhz going to waste is annoying.
>
> Anyone know of a fix?
> Cheers
>
> Doug
>
>
>
>

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Doug Leal wrote:

> Hi all ASUS users..
>
> I don't suppose anyone has tried to ressurect an older P2B-F board?

You must be joking.

> I'm assembling a clunker from spare parts and have accumulated a
> P2B-F (rev 1.0) board, a PIII 600EB Slot 1 CPU and assorted pieces of
> PC 100 SDRAM. totalling 576 MB
> The problem is getting the sytem to recognize the correct CPU with
> all the RAM. If I set the jumpers as indicated in the manual, the
> BIOS will report the CPU as a PIII 450. If I fool around with the
> frequency multiplier/bus frequency jumpers so the system reports the

As Bob said, you have the FSB133 Katmai.
BX is maximal FSB100. Officially.

> correct CPU speed, it will only see 320MB RAM It should be 100Mhz x
> 6.0, but that will only give me 450Mhz!!? RAM is all double-sided PC
> 100 and tested OK. BIOS is the latest from ASUS for that
> model......(113A I think) By tweaking the jumpers I'm able to get it
> to recognize the CPU as a 515 MHz processor with all RAM recognized -

Would do well for XP.

I actually use (for other purposes) a P3B-F with an old P2 Xeon at
300MHz and 100FSB. I tried XP too, to see how it do and it if is fast
enough with 300MHz. Well, a Xeon is a very special CPU, I know now.
Sometimes I when I copy from one partition to the other, seemingly
nothing happens, but it does

> and that's it. It actually runs not too bad. It's usable, even with
> XP PRO, but the fact that there's another 85 Mhz going to waste is
> annoying.
>
> Anyone know of a fix?
> Cheers

If you are not in need of the latest 3D things you could use a PCI VGA
and clock the system with FSB133. But I think you will get troubles
with your RAM.
PC133 Cl.3 is just working up to 112MHz at Cl. (The same goes with
PC100 Cl.2), otherwise you would have to buy some new SDRAM´s :-(

More otherwise, it would also be a waste not to use the new AGP drivers
shipped with XP SP2.



Best Regards,

Daniel Mandic

usin ASUS P2B-F Version 1,0; 786MB PC133/3, Matrox Millenium G450 at
68MHz AGP
Intel Pentium III-S 1400MHz Tualatin (solid stable!?)

>
> Doug


P.S. I´ve tried a 4200ti Gfx, whew.... thats BX power - snappy like
californian fruits.
Outperformed a Palomino XP1800 with the same GfX (ATARI NwN) in a
second. No jerking, no dazzling anymore. Even while loading from disk,
thats quad-pumped!

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Whew, I think I did not wake up very well.



sorry, made some errors.

Probably you have a Coppermine P3. 133x4.5. I thought to a 450 Katmai...

"You can clock the AGP with 89MHz, using a GeForce......"

133MHz RAM with Cl.2 is (SDRAM PC133 Cl.2, 16Mx8!!! High Density
structure) required for the FSB133. Double or single sided. Just watch
for 16Mx8, thats important.

Cl.3 I would not recommend you, better stay at FSB100 or little more
with Cl.2.
2-2-2 in the BIOS. And don´t forget to set DRAM Idle Timer to infinite.



Kind Regards,

Daniel Mandic

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Thanks to all who responded.
I've left it as is and it's now running at 515MHz with 576MB RAM.
It's stable and running suprisingly well.
I did upgrade the BIOS to ver 1014 - but of course it made no difference...
I tried all combinations of all jumpers and 515 is the highest it will run
with all RAM recognized.
I realize that I should have matched a CPU's FSB to the capabilities of the
board, but with freebies you can't be picky.

I have a P3C2000 board that is coming my way, so when I get it, I'll swap
everything over so I can use all 600MHz.

Cheers
Doug


"Bob Knowlden" <nkbob@comcast.net> wrote in message
news:MsWdnYsbQN6k8pPeRVn-gg@comcast.com...
> The 600EB uses a 133 MHz FSB (front side bus), and runs at 4.5X133.
>
> I don't know about the P2B-F board, but some mainboards using the 440BX
> chipset permit setting the PCI divider to 4. Set the bus frequency to 133,
> and the divider 4 sets the PCI bus to the normal 33 MHz. (The AGP bus
> divider can't be set to the proper number, so it's overclocked at 89 MHz.
> That's OK for some graphics cards, like a Geforce 4200.)
>
> If you want the maximum performance, you'd need PC133 RAM. If you're using
> 256 MB DIMMs, they must be low density. (All of the low density 256 MB
> DIMMs I've seen used 16 chips, but I don't know that is required.) It may
> also be possible to set a memory ratio so that PC100 will work at its
> usual frequency.
>
> If you don't wish to mess with all that, find a CPU with a 100 MHz FSB.
> You'll still need low-density DIMMs, though.
>
>
> Address scrambled. Replace nkbob with bobkn.
>
> "Doug Leal" <Dougie@lealhouse.com> wrote in message
> newsHtPe.1420$Rc.429543@news20.bellglobal.com...
>> Hi all ASUS users..
>>
>> I don't suppose anyone has tried to ressurect an older P2B-F board?
>> I'm assembling a clunker from spare parts and have accumulated a P2B-F
>> (rev 1.0) board, a PIII 600EB Slot 1 CPU and assorted pieces of PC 100
>> SDRAM. totalling 576 MB
>>
>> The problem is getting the sytem to recognize the correct CPU with all
>> the RAM.
>> If I set the jumpers as indicated in the manual, the BIOS will report the
>> CPU as a PIII 450.
>> If I fool around with the frequency multiplier/bus frequency jumpers so
>> the system reports the correct CPU speed, it will only see 320MB RAM
>> It should be 100Mhz x 6.0, but that will only give me 450Mhz!!?
>> RAM is all double-sided PC 100 and tested OK.
>> BIOS is the latest from ASUS for that model......(113A I think)
>> By tweaking the jumpers I'm able to get it to recognize the CPU as a 515
>> MHz processor with all RAM recognized - and that's it.
>> It actually runs not too bad. It's usable, even with XP PRO, but the
>> fact that there's another 85 Mhz going to waste is annoying.
>>
>> Anyone know of a fix?
>> Cheers
>>
>> Doug
>>
>>
>>
>>
>
>

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Doug Leal schrieb:

> I have a P3C2000 board that is coming my way, so when I get it, I'll swap
> everything over so I can use all 600MHz.

The system may, however, not necessarily be any faster - the i820 with
MTH is restricted to PC100 operation and not exactly a speed deamon.
(According to old Sisoft Sandra memory benchmark results, it's about on
par with a BX at 66 MHz.) And then there's the buggy MTH, so don't be
surprised if the board has a tendency to freeze. If this weren't enough,
even some pure RDRAM i820 boards showed instability, apparently due to
grounding issues. (Tne P3C-D appears to be solid though.) This fiasco
was also called "Caminogate"...

Stephan
--
Home: http://stephan.win31.de/
PC#6: i440BX, 2xP3-500E, 704 MiB, 250+80 GB, R9k AGP 64 MiB, 110W