running at 150 fsb a bad idea?

potac

Member
Jul 10, 2000
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Is it really going to cut down the life of my components. Don't really want my puter to crap out in a month but I still want the o/c.
Thanks
 

Painman

Diamond Member
Feb 27, 2000
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Start out with quality components and you will be ok. Achieving 150 MHz bus speed isn't just a matter of going into the BIOS and selecting it.

Most importantly you need top quality RAM (Crucial CAS2 PC133, Mushkin Mosel Vitelic rev. 2, EMS HSDRAM, etc.)

Then you'll need a mobo known to run at that speed, you'll need a vid card that can handle the AGP overclock (different video chips interact better or worse with different motherboard chipsets), and last but not least you need a CPU that's going to actually make the target speed. That's probably the trickiest part right there. You can buy everything else having a good idea of what it'll achieve for you, but the CPU is more of a crapshoot.

Right now, to be safe, stick with a retail PIII with cB0 stepping rated at 650 MHz or less to have the best chance of getting it to run on a 150 MHz bus. That won't get you over a GHz, but the extra system bandwidth you get running a 150 bus more than makes up for not having a whiz-bang 4 digit CPU speed.

Good luck, hope you get there. Let us know if/when you need help.

-Pain
 

Painman

Diamond Member
Feb 27, 2000
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When Intel makes engineering changes to their CPU fab lines, it is refered to as a new stepping. The old stepping on the PIIIs was the cA2 stepping, cB0 is the current one. They overclock much better on average than the older stepping does. When you go CPU shopping you aren't going to find "cA2" or "cB0" printed on the boxes, but you can still tell which is which... every Intel proc has a 5 character code printed on it known as the s-spec... on the outside of a retail cpu box it is the last 5 characters of a much longer alphanumeric sequence that looks like this: BX80526F700256ESL45Y

Note the last 5 characters: SL45Y. A retail chip with cB0 stepping will always have the last 5 digits of this code in this format: SL4xx. An OEM (bare, no box, no nothing) chip with the cB0 stepping will always have the 5 character s-spec listed by itself on the actual CPU or its plastic casing and it will be in this format: SL3Xx.

Anyway, that's the deal with the stepping stuff.

-Pain
 

biohazard2

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May 1, 2000
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Cooling is key too. Even at default speeds things will end up FUBAR if you don't cool them properly.

I know this may not sit as the recomended board around here... but I'm using an Asus (which is one of the best brands, they won't argue that) P3C 2000. There are several features to this board that I like. 1: bus settings upto 180mhz :D 2: voltage tweaks 3: 1/2 agp divider, which allows me to use ANY agp video card even if I go past 150mhz (which I do) 4: selectable ram settings, which means I can be lazy/cheap and still use my pc100 while running my cpu at 150mhz. Now for the drawbacks of this board (you'll find this with most boards). i820 chipset, using SDRAM. Asus ordered a full recall of this board, as did almost all companies with a similar setup. A little slow in the ram department, but not too bad when you consider most people can't get 150mhz bus on thier cpu. AGP pro/4x... a plus and a minus all at the same time. V5's HATE agp pro, but you can really go nuts and use the higher end 128mb and 256mb Quadro cards :D, or a regular old geforce 2 and it won't bother it. Hard to find now :( since the recall they hardly exist on the open market, people for some reason or another just yanked em out, even if the board was fine.
 

Quickfingerz

Diamond Member
Jan 18, 2000
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a 150 bus isn't that bad at all. That's only about a 4 mhz overclock on your PCI components. It's much better than running at 124 from 100 on a board that only had a 1/3 PCI divisor. That one cause a 8 mhz overclock which is pretty darn high.
 

potac

Member
Jul 10, 2000
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Am I really stressing out my vid card then by having o/ced along with the high bus settings?