Simple Q. about Upping my FSB...

[Zim Hosein]

I have an XP1800+ & Epox 8K3A+ which allow me to up my FSB in 1 MHz increments. I don't want to fry my system and was wondering if upping the FSB by a MHz or two will affect my system. I just went from 133 to 134 and have not noticed any rise in CPU Temps. Can I continue to up the FSB till I notice an increase in CPU Temp w/o damaging my system? Thanks for your time.

Zim

 

[CrazySaint]

Nice overclock, you are now the proud owner of an Athlon XP 1801.5+ Yeah, you should be fine. If your board has a PCI/AGP lock or a 1/6 divider you should use it.

 

[BuddyAtBzboyz]

Yeah going up in 1mhz increments is the best way. When overclocking I usually keep going up in small increments till it crashes or locks up then I drop the speed down a bit 2-5 mhz for stability.

 

[Zim Hosein]

Originally posted by: CrazySaint
Nice overclock, you are now the proud owner of an Athlon XP 1801.5+ Yeah, you should be fine. If your board has a PCI/AGP lock or a 1/6 divider you should use it.

CrazySaint, guess I'll have to look into a 1801.5+ case badge As for the PCI/AGP lock or 1/6 divider, what does that do for me, do you perhaps any links a newbie like me could read? Thanks in advance.

BuddyAtBzboyz, thanks for the response, upping in small increments is the plan, just wanted to make sure I was on the rught track

 

[grunjee]

Do you know which stepping your chip is?

Also, what are your temps like? As long as they don't exceed 60-65 you should be fine (before anyone yells at me, the 8k3a+ reads the diode temp, not the socket).

Experiment with your chip like the other guys have said. Bump it up 2-3 MHz at a time. Unless you have some extremely cheap, crappy hardware, OC'ing won't fry a thing.

At a certain point, if you notice you can't OC any further, you'll need to feed the chip more voltage. Take it up one step at a time in the bios... try it, and if it doesn't budge, up the Vcore again. I wouldn't recommend going over 2.0 Volts though if you're air cooling.

Good luck and keep us posted.

 

[Zim Hosein]

Originally posted by: grunjee
Do you know which stepping your chip is?
Also, what are your temps like? As long as they don't exceed 60-65 you should be fine (before anyone yells at me, the 8k3a+ reads the diode temp, not the socket).
Experiment with your chip like the other guys have said. Bump it up 2-3 MHz at a time. Unless you have some extremely cheap, crappy hardware, OC'ing won't fry a thing.
At a certain point, if you notice you can't OC any further, you'll need to feed the chip more voltage. Take it up one step at a time in the bios... try it, and if it doesn't budge, up the Vcore again. I wouldn't recommend going over 2.0 Volts though if you're air cooling.
Good luck and keep us posted.

grunjee, I don't know what stepping my XP is, I totally forgot to write it down before I mounted the AX-7 to my MB last Thursday I don't have an "extremely" cheap components in my sytem [At least I don't think I don't], so a few more MHz's or so will be cool w/ me as I want to keep this rig quiet but just looking at producing WU's a bit faster. Oh, I am air cooling so I will definately keep the vcore under 2.0 volts. Thanks for your assistance

 

[CrazySaint]

Originally posted by: Zim Hosein

Originally posted by: CrazySaint
Nice overclock, you are now the proud owner of an Athlon XP 1801.5+ Yeah, you should be fine. If your board has a PCI/AGP lock or a 1/6 divider you should use it.

CrazySaint, guess I'll have to look into a 1801.5+ case badge As for the PCI/AGP lock or 1/6 divider, what does that do for me, do you perhaps any links a newbie like me could read? Thanks in advance.

BuddyAtBzboyz, thanks for the response, upping in small increments is the plan, just wanted to make sure I was on the rught track

Actually, I did my math wrong, so that's actually a 1817.25+ As for the PCI/AGP lock and the 1/6 divider, your PCI and AGP busses are supposed to operate at 33 and 66MHz respectivily and are calculated as a fasctor of the FSB speed. Athlons have a 133MHz FSB so AGP would use a 1/2 divider (AGP = 1/2 FSB) and the PCI would use a 1/4 divider (PCI = 1/4 FSB). But when you increase your FSB, you also increase your PCI and AGP busses, essentially overclocking every component in your system which will wear them out faster. So some motherboards have a PCI/AGP lock which locks the PCI/AGP speeds at their stock 33/66MHz settings. Others have a 1/5 or 1/6 PCI divider (instead of 1/4) so that you can increase the FSB more before your PCI bus goes too far out of spec. So if your motherboard has a PCI/AGP lock, go a head and turn it on. If it doesn't have a lock but has a 1/5 or 1/6 divider you should use it once you take your FSB past a certain point (somewhere in the 140s FSB speed, I think) without overclocking your PCI bus too much. I think that most systems are fine with PCI/AGP speeds up to something like 38/72, so you don't have anything to worry about.

 

[Parabol]

The 1/6 divider will kick in automatically once his FSB hits 166. The nice thing about the Bios w/ the 8k3a is that it shows you the effects on the PCI and AGP as you change the FSB.

 

[Zim Hosein]

Thanks for the correction on my new XP1817.25+ CrazySaint

As for the post explaining the PCI/AGP lock, I appreciate it a lot, you actually made it so clear that I feel I fully understand it, thank you for taking the time to post such an informative response, again thanks

 

[CrazySaint]

Originally posted by: Zim Hosein
Thanks for the correction on my new XP1817.25+ CrazySaint

As for the post explaining the PCI/AGP lock, I appreciate it a lot, you actually made it so clear that I feel I fully understand it, thank you for taking the time to post such an informative response, again thanks

You're welcome, glad I helped

 

[BuddyAtBzboyz]

To tell you the truth I usually go up in 5mhz increments till i lock up but going in 1mhz increments is safer. Not that I think your chip will fry just by overclocking the fsb by 5mhz but it could.