just starting to oc

[br0therfrank]

i have an 8k3a+,
xp 1700,
512 stick of Mushkin pc2700,
swiftech mc370 hsf

and i am wondering about voltages and what can i expect to have to set them at to get to 166 fsb stable...

o i have a radeon 9700 and 166 is all im hoping for as i heard the 9700 has issues with the agp slot being messed with

anyway thanks for the help i've already gotten just reading here


later
br0therfrank

[K6-III]

Your cooling probably won't be adequete for raising the vcore too much...

[br0therfrank]

well heat hasnt been an issue
i have had the fsb up to 150 but it would crash eventually playing games

i have been wary of cranking the voltage
i dont care about the cpu as it will be replaced soon but i didnt want to screw anything else up

i think i had the vcore up to 1.80 or 1.85 and the ram up 2 "clicks"
i forget what it said other than +0.20 or 0.020 or something like that

am i being too conservative with the voltage is all im wanting to know

the truth is i will probably be getting a new mb around christmas too, maybe that new epox kt400 board, but im not sure yet

thanks

[br0therfrank]

the swiftech is a mcx job with the copper base and i have a ys-tech 40 cfm fan on it and it does just fine till i go to something more unconventional like water or maybe something else

ive been pretty happy not overclocking but when i put the pc together i wanted to make sure i could try it if i wanted too

[Daniel ~]

I'm set at 1.9, I wouldn't go over that, even with good cooling.

[br0therfrank]

HEY thanks man!

i'm getting there

WEE!

[Daniel ~]

My pleasure":O}

[Holst]

With sufficent cooling and a good PSU you can increase the voltage on Xp-1700 up to 2v without much danger.

The difficulty is that as you inrease voltage you produce more heat, get too hot and that will cause instability not lack of voltage.

Best to play around with voltage and overclock untill you reach a happy medium between speed stability and heat.

With watercooling i run my Xp-1600 at 2.2v 24/7 without issue, but on air the 120watts it produces would casue instant overheat.

Id say 2v is the limit on aircooling unless you have a very good heatsink with a deafening fan.

[br0therfrank]

Cool... this weekend I am going to experiment with what I've got and how well I can do.

Just as a side note, what are the potential gains in the more aggressive ram timings that are available? I'll do some more searching thru the forum and I'm sure I'll find something, but since I have the ears of some vets, I might as well ask.

Thanks

br0therfrank

"The man in black walked into the desert, and the gunslinger followed." - SK

[Random Nonsense]

faster ram timings are a GOOD thing just see what the machine can do, your better off on fast timings and 10mhz lower FSB than slow at 10mhz higher

[Holst]

I allways run my machine at fastest timings BUT I have an unlocked CPU so i can keep my processor maxed out at a variety of FSB. (fastest timings will reduce your memory/fsb overclock by quite a bit)

I think in your case you will have to run normall timings, find the max fsb you can run (max out your CPU) then try making memory timings more agressive.

As I doubt you will get too much over 166fsb (if that) with a locked CPU you should be able to run turbo timings with your memory, but you will have to try it and see.

[Holst]

oooooh

make sure your memory is set to 133mhz in dram clock when overclocking it.

Otherwise you might have it set to 166 mode, this will often limit your fsb massively as your memory will be running faster than the FSB (1.25X faster) so at 150fsb your ram will be at 187!!!
That might be limiting your overclock not your CPU.

[br0therfrank]

Yes I had my ram set at by spd which of course put it at 166!!
i have changed it to 133.
I have got my 1700 cpu at 1.66(XP2000-) wee! 150 fsb
I'm thinking the 166 fsb i was shooting for is far far away due to heat.
USDM is reporting 50c idle and as much as 59c after running UT2003 or Morrowind for a few hours. Sandra and bios (2912) are reporting about the same temps.

vcore is 1.85 and vdim +.20

But this has been a major improvement in fps. I won my first ut2003 demo match last night (WEE! What a big man I am! hehe...) and im off to get the full version today.

O and so far i have tried the fastest timings (default) setup and I am about to try the turbo. Everything seems rock solid.

Now I'm looking forward to the AMD chips with the 512 L2 cache!

Really appreciate all the help.

If you are in the gamespy or UT2003, I am GK - br0therfrank or GK - br0ther

Thank you for this PC pleasure!