Overclocking my computer

[TeTE]

I want to overclock my system, but my motherboard only has an option to modify fsb/pci clocks. It has the following options (fsb/pci):
- 100/33
- 110/37
- 115/38
- 120/30
- 122/30
- 129/32
- 133/33
- 138/35
- 147/37

I don't want to run the pci bus at a lower speed. So only left 110/37, 115/38, 133/33, 138/35 and 147/37. But I suppose that 133, 138 and 147 are too high for the cpu. What do you think?

Is dangerous to overclock with only this option (no Vcore, fixed FSB/PCI clocks, etc)? Should I try with the lower speeds (110/37, 115/38) or may I fry the pci cards or the ram?

Here is my system:
AOpen AK33, KT133
Athlon Thunderbird 1.3
Taisol CGK760092
256 (Siemens) + 128 (Trascend Information) SDRAM PC133
Asus GeForce2 MX 32 SDRAM
HD Fujitsu 20GB 7200
Pioneer DVD-105
AOpen CD-RW 2440
Realmagic Hollywood+
Creative ModemBlaster V92 PCI
Creative SoundBlaster PCI128

Thanks.

 

[JC]

What FSB is your Tbird? 100 or 133? My 1.4/266 Tbird would do 150FSB, but it's unlocked, and I used a lower multiplier. Under 40MHz on the PCI bus prolly won't scramble your hard drive, but your PCI cards may/may not like it. I've run my PCI up to 41MHz and gotten away with it.

JC

 

[TeTE]

My Tbird's fsb is 100. But I can't change the multiplier.

 

[JC]

Prolly 115FSB (1495MHz) is gonna be the most you'll get out of it, IMHO.

JC

 

[TeTE]

And what do you think about the ram (it's normal ram, from siemens and trascend). Will it survive? It's pc133 and with pci=37 (fsb 110) it will ran at 37*4=148. (115/38 -> 152.)

 

[JC]

Originally posted by: TeTE
And what do you think about the ram (it's normal ram, from siemens and trascend). Will it survive? It's pc133 and with pci=37 (fsb 110) it will ran at 37*4=148. (115/38 -> 152.)

?

The RAM should run at the FSB speed. Where do you get 37*4?

 

[ChampionAtTufshop]

its a kt133 board, which for the most part, had troubles over 110fsb or so....

best bet would be to unlock cpu and up fsb, then up the mult
(its really easy on tbirds/durons anyways lol, just connect up the L1 with a pencil)

 

[TeTE]

My ram runs at 133 and my fsb is 100 (x2) so ram doesn't runs at fsb speeds.
In the bios I can select the clock of the ram to be pci*3 or pci*4. So I supposed that if the ram is pc100 it's speed is pci*3 and if it's pc133 it'll be pci*4. That's where I get 37*4. But I'm not sure if it works that way (may be I should overclock and look what says the bios at startup). Another possibility is that the mb has an independent clock for the mem, that is independent of the fsb or pci clocks, but I don't think because of the pci*3 or 4 option. Anyway I'll try it tomorrow.

ChampionAtTufshop, the motherboard doesn't has an option to change the multiplier (at least with the cpu locked). What will happen if I unlock the cpu? Will the bios show a new option to change the multiplier? If not, what speed would I get if I can't change the multiplier in the bios?

 

[ChampionAtTufshop]

Originally posted by: TeTE
My ram runs at 133 and my fsb is 100 (x2) so ram doesn't runs at fsb speeds.
In the bios I can select the clock of the ram to be pci*3 or pci*4. So I supposed that if the ram is pc100 it's speed is pci*3 and if it's pc133 it'll be pci*4. That's where I get 37*4. But I'm not sure if it works that way (may be I should overclock and look what says the bios at startup). Another possibility is that the mb has an independent clock for the mem, that is independent of the fsb or pci clocks, but I don't think because of the pci*3 or 4 option. Anyway I'll try it tomorrow.

ChampionAtTufshop, the motherboard doesn't has an option to change the multiplier (at least with the cpu locked). What will happen if I unlock the cpu? Will the bios show a new option to change the multiplier? If not, what speed would I get if I can't change the multiplier in the bios?

the mult is either accesible thru the bios, or via dip switch/jumper
look at the manual for more informatino regarding the matter

 

[TeTE]

Originally posted by: ChampionAtTufshop

Originally posted by: TeTE
My ram runs at 133 and my fsb is 100 (x2) so ram doesn't runs at fsb speeds.
In the bios I can select the clock of the ram to be pci*3 or pci*4. So I supposed that if the ram is pc100 it's speed is pci*3 and if it's pc133 it'll be pci*4. That's where I get 37*4. But I'm not sure if it works that way (may be I should overclock and look what says the bios at startup). Another possibility is that the mb has an independent clock for the mem, that is independent of the fsb or pci clocks, but I don't think because of the pci*3 or 4 option. Anyway I'll try it tomorrow.

ChampionAtTufshop, the motherboard doesn't has an option to change the multiplier (at least with the cpu locked). What will happen if I unlock the cpu? Will the bios show a new option to change the multiplier? If not, what speed would I get if I can't change the multiplier in the bios?

the mult is either accesible thru the bios, or via dip switch/jumper
look at the manual for more informatino regarding the matter

Well, I don't have any option in the bios and there aren't jumpers in the mb. So if it doesn't appears in the bios when the cpu is unlocked, I can't change the multiplier.