Question about multiplyer and FSB

[omni99]

I just bought a celly 633 and a BX133 RAID...Its the perfect combo for the OC i want to acheive(950mhz) ..I researched everything i could..and this combo suites the job i want perfectly..since i wont be wanting to go higher than 100FSB..
..now I noticed some people do what i think is strange...by getting to 950mhz ive seen that some people get this by doing like 112FSB and like 8.5x multiplyer..why not just do 100FSB and 9.5x???? now ive seen this many many times...it just seems to me the best settings are always the easiest? I know most pci and agp run best at 2/3 1/3 @100fsb
I plan on putting together my new puter tomarrow..and just want the lowdown on "un" even FSB to xmultiplyer? thanx guys! :)

[DaveB]

You can't change the multiplier on an Intel CPU. It's built into the CPU and all the motherboard does is read if from the CPU. You O/C by increasing the FSB and increasing the core voltage as necessary.

[Ozzy]

And i don't wanna be a pain in the arse , but will the bx-133 actually allow you to change the voltage ?
I thought i read somewhere that you couldn't ? :(

[omni99]

yup..the board has a full array of settings :) voltage FSB amd multiplyer...and i thought you can adjust the multiplyer on a celeron II 633??

[wild_andy_c]

I just bougt a Celly 633 and a BX133RAID - it's the perfect combo for overclocking..............oh dear.

If you wanted an 8.5 times multiplier - this was not the chip to buy. The 566 was.

My prime sentence should read "I'm thinking of buying a Celeron for overclocking but aren't too sure about what I'm doing, could anyone point me in the right direction please? Could someone also recommend me a motherboard"

To which I would have recommended a celeron 566 or 600 cC0 and any new ASUS or Abit motherboard.

Nice motherboard, shame about the chip.

[omni99]

actually i did read alot on the bx133 and the celeron633...it looks happy to reach 950 or even lower(and in alot of cases higher! ;). The bx133 has all the stepups that i need to adjust to get any speed from 633+ ..the xmiltiplier goes up to 11 and i will never need that high.....

[Carmine_Paterno]

You probably can hit 950 +- with that setup, but andy is right, you should have posted and asked, u could have had a better setup maybe hitting 1 ghz.

[omni99]

well im a lil confused. Why would I want a 8.5x and 566? i only want to go as high as 950(if that high)..i know the 633 can acheive that easily(well we will see in a few hours ;) but i just am wondering whats wrong with the setup i have? i thought it was perfect for what my goals are

[omni99]

omni99 (Feb 16, 2001 06:17 p.m.):
well im a lil confused. Why would I want a 8.5x and 566? i only want to go as high as 950(if that high)..i know the 633 can acheive that easily(well we will see in a few hours ;) but i just am wondering whats wrong with the setup i have? i thought it was perfect for what my goals are
I also..even though i did the research i needed...i didnt know about not being able to adjust the multiplyer (only previous to '98 can do that).
ok heres another question....if i run the bus a little lower than 100mhz and at 1/3 agp and 2/3 pci..well that will be an underclock to the busses...will that degrade to underclaock any?

[e laursen]

OK, let's clarify some basics. Your CPU speed is the FSB x CPU Multiplier. Current Intel chips are multiplier locked, period. Celerons are spec'd to run at 66MHz FSB, therefore, your 633 celeron has a 9.5 multiplier.
If you increase to 100MHz FSB, you get your CPU to 950MHz. When you see FSB of 112, they have a 566 celeron running 950 (112x8.5=952). If you were EXTREMELY lucky and got the 633 to 112FSB, you would have 1064 (112x9.5). Make sense?

[omni99]

Yupperz..make perfect sense :) im just waiting on my case now..hurry up damn ups!!! grrrrRRRRrr

[wild_andy_c]

The reason I suggest the 566 is the greater parity between memory bus and CPU speed when overclocked. This improves the lower the mutlplier is.