run 22x100 or 15x133 (2000) ??

[jmc2]

Have given up trying to get my KT7E to run 133 FSB with
my T-bred/b 2400+. It would do it with my T-bird 1.333.

So I seem to have a choice of running 22x100 (2200)
on the abit Mboard (2300 is unstable) OR

put in my ECS k7S5A Mboard and run at 15x133 (2000)
ECS is not a overclocking board.

I'm tending to want to put in the ECS board (2000/133)
BUT will be really put out if it is slower then 2200/100.

Thought welcome !!
Thanks,
jmc

 

[svol]

Your mobo support a 22x multiplier?!?

I would go for the ECS mobo, because you biggest bottleneck is memory bandwith. And you might be able to run it at a 16x multiplier instead of a 15x.

My dual-PSU PC is so powerfull that the neighbourhood dimms when I turn it on

 

[phsstpok]

Got some benchmarks at 22 x 100?


<b>99% is great, unless you are talking about system stability</b>

 

[jmc2]

Benchmarks... only Norton system benchmark...
2000 Mhz around 1000+
22-23 Mhz about 1200+

The system is getting flaky... Can't do a
partition image with verification and not get errors.
Fought with it all yesterday. Swapped out memory etc.

Probably go to the ECS Mboard and take my lumps if any.

jmc

 

[jmc2]

Supports 22x multiplier... well not in the bios no.

But the real multiplier is set by the cpu.
I can set my bios to 7x and get 15x 100.
Set it at 7.5x and get 22.5x 100.
Bios setting...
5x = black screen
5.5 = same
6 = same
6.5 = same
7 = 15x
7.5 = 22.5x
8 = 16x
8.5 = 16.5x
9 = 17x
9.5 = 18x
10 = weird... bootup says 252Mhz x 1.0 (252 times ONE)
norton info say 2300Mhz (1.85 volts)
10.5 = black screen
11 = same
11.5 = 19x
12 = black screen
12.5 = 20x

Trial and error.

The ECS mobo does not allow adjustments. I would have
to mod the chip.
There is a modded bios that I may try someday tho.

Thanks,
jmc

 

[phsstpok]

Bummer, I can't compare Norton benchmarks to anything I've seen recently. I was just curious how much of performance hit is taken with 100 Mhz FSB.

I have an old copy of Norton 3.x and my Tbird scores 718 @1.33 Ghz and 807 @1.5 so your scores, 1000 and 1200, are looking pretty good if I've got the same benchmark.

By the way, was is the default mulitiplier for an XP 2400+ ?

<b>99% is great, unless you are talking about system stability</b>

 

[phsstpok]

I'm saving that table you just posted. I've got a KT7 here and I might give an Tbred a go. The multiplier remapping should be the same. I wonder if it's the same for all KT133, KT133E, and KT133A chipsets. My primary board is an Epox 8KTA3PRO which is KT133A.

That 252 x 1 is funny sh*t. Imagine that, 252 Mhz FSB with a KT133E chipset.

Thanks for the info.

<b>99% is great, unless you are talking about system stability</b>

 

[Crawler]

Go with the ECS board. Flash it to the oc bios and with a little luck you may get it running as high as 15 X 150 mhz. It doesn't give you all FSB increments to play with, but enough to get a modest overclock. Unfortunately there is no way to up the voltages or multiplies without tinkering with the bridges.

 

[svol]

The default XP2400+ multiplier is 15x.

I think I've got the explanation for this. The L10 bridges on the XP determine if you got a <12.5x or 13X< multiplier... with the default L10 birdge setup for the XP2400+ a lot of low multipliers will function as high ones.

My dual-PSU PC is so powerfull that the neighbourhood dimms when I turn it on

 

[phsstpok]

With Tbred 2100+ and higher the high multiplier bit is set by default. On older motherboards the multipliers become remapped. 5x-12.5x become 13.5x and higher. Unfortunately the remapping is not in sequence. That's why I'm saving JMC2's table.

If you close the 5th L3 bridge on the Tbred this changes the mapping back to the conventional 5x-12.5x. Useful on older motherboards if one wants to attempt ultra high FSB speeds without high overclocks. Not sure if any older motherboards can get much past 166 Mhz FSB though. Perhaps with a voltage mod they can.

I've been reading the Abit forum at Google Groups (usenet). Wes Newell has been helping people get Tbreds running on KT7 mobos (FSB at 100 to 116). That's KT133 (not KT133A). Seems Tbreds, the higher multiplier ones, are easier to run on these old boards than the Palominos were. The multiplier remapping plus being factory unlocked makes the process so much easier to run the CPUs at the correct speed (but with underclocked FSB).

If you use the lower speed Tbreds, below 2100+, you have do more mods, just as you say.

I may have to get me one of those Tbred 2100+.

<b>99% is great, unless you are talking about system stability</b>

 

[jmc2]

Hmmm, OK I've noticed something odd!!
I thought my Hard drive sounded different when
I installed the 2400+.

When I put a Duron 700@1000 in to test the stability
problem I was having there WAS a sound change!

And the errors (no 133 bus speed-blackscreen)
verifying partition image always failed
errors in large file copies.
went away!!

133 bus speed works fine

I am totally guessing but am wondering if
the FSB was off (the bios read 15x100)
So all should work but DID not.

That would explain the hard drive errors
(and definate sound change in hard drive)

Just a thought and warning to watch out for.

(oh yes, Duron @ 1000(133 FSB) norton utilities
4.0 System bench mark... 260
with 2400+ was 1000-1200 (2000 and 2200 Mhz)

Good luck
jmc2

 

[phsstpok]

Sound change in your hard drive? That sounds like a voltage problem. Did you notice if your fans were changing sound/speed too?

Install some motherboard monitoring software (I like Motherboard Monitor) and keep an eye on both the +12 volt and +5 volt rails. Watch your fan speeds too. Try with the Duron and then with the XP 2400+. If your fan speeds drop and your voltages vary signifcantly from previously when using the 2400+ then I would definitely suspect the power supply. ECS K7S5A really need a top quality power supply for stability (or so that's what I have heard). What do you have for a PSU?

<b>99% is great, unless you are talking about system stability</b>

 

[svol]

ECS K7S5A really need a top quality power supply for stability (or so that's what I have heard). What do you have for a PSU?

Well i built a system with a ECS K7S5A with Athlon XP1600+, 256MB PC2100 RAM and GeForce2 MX with 1 HD and 2 CDROMs for my uncle and it runs perfect with a 300W not very expensive PSU.

My dual-PSU PC is so powerfull that the neighbourhood dimms when I turn it on

 

[phsstpok]

Well i built a system with a ECS K7S5A with Athlon XP1600+, 256MB PC2100 RAM and GeForce2 MX with 1 HD and 2 CDROMs for my uncle and it runs perfect with a 300W not very expensive PSU.

That may be true but have you seen all the posts to the contrary?

The Geforce2 MX is a 10 watt video card. Try a Radeon 8500, 30+ watts. Or an old Geforce256, about 40 watts. Geforce4 Ti4600 must be pretty close to the same. Try 2 DIMMS. See if it's still easy to keep that K7S5A stable.

JMC2 is trying to run a Tbred at 2.0-2.2 Ghz. Big difference compared to your uncle's system at 1.4 Ghz. Stable power is essential.


<b>99% is great, unless you are talking about system stability</b>

 

[svol]

Yes, I've seen them a lot back in the days that I posted in the mainboard forum. And I know the PC dusn't draw much, but it prooves that you don't need a high-end PSU on every system... it uses 2*128MB as RAM BTW.

My dual-PSU PC is so powerfull that the neighbourhood dimms when I turn it on