Help :) Setting AMD 1333 (Long Specs!)

J

JonasSteele

n00b
Joined
Jul 20, 2004
Messages
29
Greetings and Hello,

I have many times read and found answers among these boards, but this time I feel I need a little more direct help. I need help properly setting (clocking) the processor in my old secondary pc for peak performance and stability. Rather than the default 1g the boards bios runs it at. I am fairly good with hardware but not very knowledgable at manually configuring processors.

I know most posts request as much information as possible so here goes:

Processor Die Information

AMD Athlon
A1333AMS3c
AYHJA0126WPFW
96582440178
®©1999

Information from AMD

A Processor Core Architecture AMD Athlon Processor
1333 Model Number 1333MHz
A Package Type Ceramic
M Operating Temperature 1.75v
S Max Die Temperature 95C
3 Size of L2 Cache 256 Kbyes
C System-Bus 266 MHz

Additional Information

Processor Multiplier 10x
Max Theoretical Thermal Power 70.0w
Max Current (Icc) In Amperes 40.0A
Package Type PGA

Memory

(1) SEITEC 512M DDR-333 MHz CL2.5
(1) Unknown 256M DDR-333 MHz

Mainbaord
SOYO KT-333 Dragon Plus

Chipset Type
VIA KT333CF
Chipset Description
VIA KT333CF / 8235 chipset Supports 266/333 MHz FSB
Graphics Info
AGP slot supporting 4X AGP Adjustable voltage from 1.5v to 1.8v
Memory Type
DDR400/333 SDRAM.
Memory Description
Three DDR 2.5V DIMM sockets support up to 3GB (DDR 333/266/200, 2GB for DDR 400)
184-pin PC3200/PC2700/PC2100/PC1600 non-ECC, unbuffered DDR SDRAM memory

Memory Speed CPU/FSB Support

CPU Front side bus---DDR266---DDR333---DDR400
200MHz----------------Yes--------Yes---------No
266MHz----------------Yes--------Yes---------Yes*
333MHz----------------No---------Yes---------Yes**
400MHz----------------No---------No----------Yes

AMD Processor FSB Support

CPU Type------------------Thunderbird
Board Type----------------200MHz---266MHz
KT333 Dragon Plus!-------Yes--------Yes

Maximum AMD CPU Speed Support

Model----------------------Thunderbird
KT333 Dragon Plus!------1.4GHz

BIOS OPTIONS

CPU Frequency Mode
Manual
---Manual Options
-----Frequency 1MHz Stepping (0-255)
-----CPU to PCI Divider /3 /4 /5 /6
100
120
133
140
150
166
200
Auto
DRAM Clock
By Spd
133
166
200
CPU Ratio Select
5X-18X
5.5X-13.5X & 16.5X

CPU Voltage Select
1.850 - 1.475 in .025 increments

DDR (2.5v) Voltage Select
Default
2.6 2.7 2.8

AGP (1.5V) Voltage Select
Default
1.6 1.7 1.8

There are additional memory options available if needed. I hope I have provided enough information for you to assist me in setting these options without drowning you in too much detial...

Sincerely

HuserX

Soyo KT333 Dragon Plus!
AMD 1333 Mhz T-Bird
Maxtor 20g 7200RPM HDD
768M DDR Ram
Nvidia TI-4200 64M AGP
 
While the Thunderbird is a bit old, it is still a solid performer. For default speed, you need to change your frontside bus speed to 133. RIght now it is set at 100. 10x100=1000. You want 10x133=1330 (there is more past the decimal point, but you get the idea.)

Some KT333 motherboards allowed you to use a 1/5 divider to hit 333 MHz FSB. Some didn't allow that. You ought to find out if you can set the FSB to 166. Your CPU is unlocked (all 1333 Thunderbirds were), and setting your machine to 8x166=1328 would be a noticeable improvement over 10x133.
 
Yes it is a a few years old , it is my secondary pc and I haven't really messed with it too much.. Changing the FSB to 133 I assume would be the CPU Frequency Mode? Then CPU Ratio to 10.5?

Some KT333 motherboards allowed you to use a 1/5 divider to hit 333 MHz FSB
Click to expand...

There is a CPU to PCI diver /5 option under manual settings.. is that what you mean by a 1/5 divider to hit 333 MHz FSB?

You ought to find out if you can set the FSB to 166
Click to expand...

166 is an option under the CPU

Your CPU is unlocked (all 1333 Thunderbirds were), and setting your machine to 8x166=1328 would be a noticeable improvement over 10.5x133.
Click to expand...

Frequency Mode... So Should I set it to 166 and the CPU ratio to 8X.. ?

If so what should the DRAM clock be set to (choices listed above)?

Thanks Again

Huserx

Soyo KT333 Dragon Plus!
AMD 1333 Mhz T-Bird
Maxtor 20g 7200RPM HDD
768M DDR Ram
Nvidia TI-4200 64M AGP
 
Yes, for best performance set the CPU frequency to 166, and the ratio to 8x. My understanding is that AMDs perform best with the memory at a 1:1 ratio with the CPU, so set the DRAM clock to 166 as well. This is assuming you have PC2700 RAM. If you have PC2100, go with 10.5x133, with the DRAM clock set the same.

I'm not sure why 200MHz is shown as an option. While I was able to run my KT333 Epox 8K3A+ that high and faster, the PCI bus is pretty far from specifications at 200 MHz.
 
I'm not sure why 200MHz is shown as an option. While I was able to run my KT333 Epox 8K3A+ that high and faster, the PCI bus is pretty far from specifications at 200 MHz.
Click to expand...

This board seems to have been desinged to be very OC friendly :D

Yes, for best performance set the CPU frequency to 166, and the ratio to 8x. My understanding is that AMDs perform best with the memory at a 1:1 ratio with the CPU, so set the DRAM clock to 166 as well. This is assuming you have PC2700 RAM. If you have PC2100, go with 10.5x133, with the DRAM clock set the same.
Click to expand...

Well I have on 512 PC2700 and one 256 PC2100 so right now it's at 10.5x133 with DRAM clock set the same 133..

Can the pc2100 module be run on a 166mhz bus.. I suppose this would be OC'ng the one ram stick but can it be done with relative safety or is it better to leave things at the 10.5x133 & 133 settings..

Thanks A Bunch,

Huser

Soyo KT333 Dragon Plus!
AMD 1333 Mhz T-Bird
Maxtor 20g 7200RPM HDD
768M DDR Ram
Nvidia TI-4200 64M AGP
 
Since this is your backup system, I don't know how much time you want to spend squeezing performance out of it. Your PC2100 might handle PC2700 speeds, but it will almost certainly need a bit of extra voltage to do it. Can you change the memory voltage on this board?

I'd try it without the PC2100, then add that memory back in and try your luck.
 
I am not so much worried about the increase in performance of the one memory chip but the whole unit as a whole running at 166 or 133.. Although this is a secondary unit I am trying to utilize it to run a secondary gaming accout and the gaming account is a little resource intensive so I am just trying to.. Improve things even marginally..

The only memory voltage setting I see in the bios is:

2.5 (Default)
2.6
2.7
2.8

Huser

Soyo KT333 Dragon Plus!
AMD 1333 Mhz T-Bird
Maxtor 20g 7200RPM HDD
768M DDR Ram
Nvidia TI-4200 64M AGP
 
Greetings again,

Well, I have it running currently at a CPU frequency of 166 with an 8x multiplier for 1336MHz and a DRAM bus of 166, at default voltages, and have run the Prime 95 torture test (Maximum heat mode) and Masaki Kawase Direct x9 Shader Demo for about 20 hours with no errors, freeze up's or reboot's with the side panel on it stabalized at a 63C max load temp. (Idle is 51c with the side on 46c without).

I have changed the direction of the side fan for positive pressure, and added an additional intake fan in the front of the case, (no rear exhaust available).

Unless there is any need to push things further this seems to be a stable, and faster setup. Using everest home edition the memory timings have gone from:

Read 1430
Write 433
Latency 182.6ns

To:

Read 2159
Write 620
Latency 133.7ns

Oh and from another guide, I have slightly tweaked the ti-4200 to a 300 clock / 500 memory setting. Thus the reason for using the Masaki Kawase Direct x9 Shader Demo.

Unless theres anything else...

Thanks Again,



Huser

Soyo KT333 Dragon Plus!
AMD 1333 Mhz T-Bird
Maxtor 20g 7200RPM HDD
768M DDR Ram
Nvidia TI-4200 64M AGP
 
That's a nice improvement in performance for the price of changing a few settings. Glad it worked out for you.
 
That KT333CF is actually an early KT400 before it was renamed. I used to have one of them. They don't like going much above 170 MHZ fsb (at least with my Athlon XP 2500+, now on a kt880 @210FSB), but do have the same deviders and memory support the KT400 has.
 
Just before it gets mentioned again, the T-Bird 1.33 runs with a 10x multiplier stock, not the 10.5 that was mentioned here. I should know, I still have one myself that used to be run at 10x157 completely stable. That was a nice processor for it's time.

 
Yep, everything that needs to be said, has been said already.

10x133=1.33GHz, 1.75V
Your PC2100 and 2700 side-by-side is still only guaranteed to run 2100, so don't bother with 166.

I just got my hands on a Tbird1200, so I can also vouch for their solidarity. Mine runs a solid 1400 on a semi-custom heatsink, although anything higher looks like a no-go on any amount of cooling.
 
Sworkhard said:
That KT333CF is actually an early KT400 before it was renamed. I used to have one of them. They don't like going much above 170 MHZ fsb (at least with my Athlon XP 2500+, now on a kt880 @210FSB), but do have the same deviders and memory support the KT400 has.
Click to expand...

You probably needed better northbridge cooling.I couldn't get my 8K3A+ past about 175 until I replaced the stock northbridge cooler, which was insulating the chip more than it was cooling it. Once I did that, the only thing limiting me was the out of spec PCI and AGP speeds. I ran it at 209 for close to a year. The resulting 41.8 MHz PCI caused no problems. Once it got to 42, my CDRW wouldn't burn correctly.

The same memory I had in my 8K3A+ at 209 won't do above 200 MHz FSB in my Nforce 8RDA3+. I'd go back to my 8K3A+, but I have an ATI card now, and I know it won't tolerate an 84 MHz AGP bus the way my Ti4200 did.
 
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