pentium 3 1 ghz o/cing

[BiLLyXkiNG]

Obviously I have a pentium3 1ghz and and run it at 1150(140FSB) w/ total stability at 1.70 volts and it's perfect. As soon as I up it to 145 there is a file error upon booting windows. At 150FSB the computer boots up windows correctly but it's SO SLOOWWWW AHHH. Anyway I put the voltage to 1.75 samething,1.80 same thing. After it loads the temps read out at 34 or 33 celcius. I have a ABIT VH6-II mobo. 256 RAM. ATA66 20gb hard disk. Any help would be greatly appreciated, thanks...

[Pinky]

I can actually help with this one.

There are 2 factors here: the voltage and memory.

You have already played with the voltage settings correctly, but you never mentioned anything about your memory. I have good overclocking memory, some other brands run fine at default 133/100 speeds, but don't go much higher. I suspect the memory is the cause.

Also, there's a CAS latency setting in the motherboard (should be under chipset features in the BIOS). Make sure it's set to 3 when overclocking, even if it is CAS 2 memory (you can always try to set it back to 2 later). If you have (2)128MB RAM chips, try removing one and see if it will work then, I've learned issues arise from having too many ram chips...

With that chip and motherboard you should be able to hit 150mhz bus rather easily...

[outhouse]

I think Pinky has something here, there is setting in BIOS that will let you run at minus,stadard or plus clock speed set yours to minus clock speed, i also had trouble at around 150 because i did not disable sideband in registry if you have not done that you might give it a try. After you run your PC playing games or a burn in program [when its stable] what are your full load temps? I dought its a problem but when overclocking mine i found that temps are critical if mine gets to 34C or 35C i can exspect a lock up, this will be different since your not as high but i hoped this would get my point about temps across.

[BiLLyXkiNG]

well, i got the FSB up to 158 at 1.90v, I didn't disable sidebanding, no clue about how to do that one?? after 3d aciton gaming temps just above 40c. Idle is usually 34 or 35c. And do you mean HOST-CLK to HCLK-PCICLK??

[outhouse]

Well the sideband disabling can be found in the tips section under video card performance it should help you get higher if nothing else is holding you back. and yep thats what i ment host-clock. it should be in the first menu in BIOS. If you get your temps down you should get even higher but again it depends if anything else is holding you back. Do you have a HSF on your northbridge? this may help a little too and some people will put a small HS on there clock generator you can find this small chip if you look in your manual. To keep your bandwidth up in memory since you may be running at minus clock try setting it to cas 2 if it's stable and then set your memory to turbo as long as its stable if cas 2 is stable but when you set it to turbo it gets unstable then go down below turbo until its stable and then you will have bandwidth maxxed for your system unless you go out and get pc150 or better memory.

[Godfodda]

Woohoo! Another VH6-2 buddy!! :cool:

What outhouse said about the host-pciclk is true. I have to use this option at 160 or above thanks to my "excellent" choice in buying DIMMs. Between that and a voltage bump, I'm good for several more MHz of FSB before I need to up the CV again.


I hope your planning on sticking around the forums a while. We need more VH6-2 owners in here so we can pool our knowledge. (Translated, that means, "So I can pick your brains... and BIOS settings.") :D

[BiLLyXkiNG]

I disabled Sidebanding in the WinMe registry. Changed to hstclk-pciclk or whatever i'm running it right now at 157 FSB and when I start NHL 2001 demo off the hard drive it gives me stupid little pety errors like "Tsystray caused and error in user.exe" "realplayer has done the same" "Sidewinder did it too" then it runs perfectly. my idle temps are < 35 C and my full load < 39 it hit 4 once. MY voltage is 1.90. When I start Mirosoft Word it give me an error but then i restart it and i runs perfectly?

[BiLLyXkiNG]

i need alittle help here

[Godfodda]

I don't know how much help I'll be, but I'll play surrogate until outhouse, Pinky, and Placid drop in. :) ( I gotta get me a damned 1G.)

I know it sounds strange, but maybe temps are playing a role. Mine gets a little cranky in the mid 30s with a high PCI bus. You might run it with the case side off and see if that helps.

Also, I've noticed lately that when I go on marathon clock changes, my system turns to garbage. I end up having to reset to default and work back up, letting it sit for a while at the new speed. (I know better than to make all those changes, but I just can't stop myself. :( )

Something else I try to do is keep my PCI bus in somewhat even increments. I prefer full units, but will settle for half. Usually stay away from quarter settings. I have absolutely zero evidence that this helps, though.

Yet another thing I've done is completely skip a FSB freq that's giving me hell. Went from 160 to 166 that way, since the others were no go at the time.

And finally, you might try another bump in voltage. I don't know what the others' experiences are, but my voltage increments haven't been linear with respect to FSB. Each half volt gets me fewer and fewer MHz of FSB. Granted, you are at .2 over default now, but outhouse is twice that, so you might give it a try. Maybe he'll post his voltage/FSB history to give an idea.


Sorry, for all the garbage, but maybe that'll be enough to either last you until they come back or the chip burns up. :D HTH

[BiLLyXkiNG]

when it says "PC133 @ 126" what the hell does that mean and how do you figure it out?

[Placid]

Originally posted by BiLLyXkiNG
when it says "PC133 @ 126" what the hell does that mean and how do you figure it out?

What says that Sandra?
If so it means your memory is rated for 133mhz and it is running at 126mhz. You are probably running your memory @ -pci clk.
Example, You have the fsb set to 160mhz and -pci clk set.
1/4 of 160=40 so your memory should run at 120mhz.
How it got 126 I am not sure.
I have never messed with running with the -pci clk thing thou as memory bandwith is more important to me than 100 cpu mhz.


Do you have a sound card installed?
If so what type?
Have you checked and made sure each of your componets is using a seperate irq?

[Godfodda]

As Placid has already said, the PC133 @ 126 in my sig does refer to Host - PCI bus. I have to run this way because my memory won't take me over 160 FSB.


I had another thought about your problem, but I've never seen it mentioned before so maybe someone can let both of us know if this is a valid possibility.

If the monitor is running off the power supply, will it cause voltage or current fluctuations within the power supply when changing resolutions? Would this depend upon the quality of power supply?

And if this does happen, what is the likelyhood of it "crossing lines" and affecting the power sent to the rest of the system? I was thinking that this may explain why some people have problems starting games (while overclocked) that require a resolution change.

Please feel free to correct me. :) It's just a thought. I'll also post this part in general hardware where it actually belongs.

[BiLLyXkiNG]

Well I have my computer, speakers, and monitor running off a surge protector, I have a seperate sound card and I have it on DEFAULT IRQ.

[Placid]

Run Msinfo32.exe then open the hardware resources tree and select irq's.
Look in the list for anything sharing the same irq other than irq holder for pci steering.

Here is what pci slots share irqs that I know of,
PCI 1 and agp slot share.
PCI 4 and the usb controllers share.

What brand/model sound card are you using?

[BiLLyXkiNG]

I got a picture of it...

[Placid]

If your not using usb disable them in the bios.
If you are move your modem to a different slot.

Move the ess solo audio drive so its not using the same irq as your video card.

If your not using both com port 1 or 2 then disable them in the bios and same for the printer port.

Disable the legacy dos emulation thats using irq 5 or set the bios to reserve irq 5 for isa bus.

[outhouse]

I think after what placid has said i would burn in a little longer since you just changed your CV when i moved to 2.10 it took about a month but after that i was able to go up another 3 in FSB. I know you have done a great job with case cooling and when i was trying to get more stability i also had good case cooling and with a duct my temps where pretty low but once i slapped my new Gladiator on i instantly got more MHZ out of my overclock even though my temps were only a few C cooler it may have something to do with the fact that the Gladiator pulls heat off the CPU quicker who knows but a new copper HSF really did help and it did not cost that much.

[BiLLyXkiNG]

I think that I have done that whole IRQ thing correctly.
There is a picture down there somewhere...

[Placid]

Looks good, if you still have problems you can rule out irq conflicts.

[BiLLyXkiNG]

Right now I'm running my FSB a 143 on 1.70 volts, my idle temps have dropped as I went higher on my FSB? Anyway I'm going to slowly creep up the FSB chart and if I have an problems I'll let you know. Thanks for all your help...