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problems O/C my 2100+ : please help!

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Hi

i am running a Tbred-B 2100+ on an A7N8x, Twinmos/winbond BH5 PC3200 RAM, stock vcore [1.60], AGP at 66MHz
it is currently at 12*166 = 1992 and is fine
in the recent past i have run at 12.5*166 = 2075 and it booted okay but ran too hot so i bumped it back down awaiting better HSF
i wanted to try running at 200MHz FSB so today:

first i relaxed the mem timings to SPD [a measly 8-3-3-2.5]

i ran at 9.5*200 = 1900 and it booted fine
i then tried 10*200 = 2000 and initially it locked at the black XP load-up screen and from then on refused to post with reboots[locks right after telling me how much ram i have]

what is the cause of this and what can i do?
the cpu has run at higher speed as i have gotten it to 2075 in the past and it can run at 200mhz as i have run that with a lower multi [and both at stock vcore] so why will it not run at only 10*200?

all help is greatly appreciated.
with some better cooling i had high hopes for my O/C adventure but seem to have fallen flat already!

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Try increasing voltage to at least 1.8 on the cpu and 2.9 on your RAM. Don`t know too much about Nvidia MB`s but can that board do 200MHz? What is the PCI divider? If your PCI devices are out it will fail ( as I`m sure you know ). Just check your temps out ( run Sandra BurnIn for 10 minutes ) and as long as you are around the 45 - 48c mark you`ll be fine.

Your new hardware is out-of-date

i dont really wanna increase the vcore for heat reasons but should i need to when it can boot to 2075MHz [albeit on a 166FSB?]
the problems i am having all seem to be on the higher FSB

will upping the vmem increase heat? also why should i need to up the vmem on PC3200 ram when running at 200MHz - after all that is what PC300 means, doesnt it?!

my cpu runs so hot I dont need central heating in my house!

Yes increasing the votage to 1.8 will increase the heat but that is the idea when overclocking. Adding voltage is adding stability ( and heat ) and that is why cooling is imprtant. Sorry RAM stays @ standard voltage. Just give it a try and see what happens. If it works then you have to decide...buy a new HSF or a new processor ( running a 2400xp at 2430 (180x13.5) and voltage is @ 1.80 ).

Problem with your 2100 is it is the end of the 0.15`s and therefore you won`t get much more out of it. Voltage is your answer...


Your new hardware is out-of-date
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It's nForce 2 mobo of course it can do 200FSB, i made mine do 230, and it's running fine. Increase the Vdimm to 2.8 which is your limit, then increase Vcore to 1.725 because Asus automatically overvoltage that to about 1.725-1.8 Increasing the Vdimm will allow you to go beyond 200FSB, remember FSB is more important than multiplier. Try to get it running at 220FSB and 10* multiplier, that should be your best bet on performance. BTW what's your CPU cooling?

I hate Computers! I could only overclock my Barton 2500+ to 2645mhz. My Radeon 9700pro core/mem speed won't go above 410/720. I really hate computers!

Any1 who can run a 2100XP @ 2200 ( like scottchen says 220 x 10 ) with a voltage of 1.8 PLEASE email me with proof and I`ll buy you a new Radeon 9800 PRO or FX5900 Ultra ( your choice of make ).

Your new hardware is out-of-date

Crap right, forgot that CPU's 266FSB, sorry I'm too used to my Barton 2500+ which has 333FSB. With my old TbredB 1700+ i could reach 194FSB and 11* multiplier.

I hate Computers! I could only overclock my Barton 2500+ to 2645mhz. My Radeon 9700pro core/mem speed won't go above 410/720. I really hate computers!

i still confused about this though:
i can get the spu to 2075MHz with 12.5*166 [but i had to drop it back down cos the temps went to 70C on full load with my falconrock2!] and it is now pefectly happy at 1992MHz at 12*166 so how come it is having a spaz-atack at a measly 8Mhz more at 2000MHz [diff fsb]?

i admit that 1st time round i had the vcore on "auto" [it still said 1.60v] but when i tried it again later in the evening it still wouldnt play ball when i locked the vcore to 1.60....

i ran it at 9.5*200 and it booted up but i got an error message when doing a ram burn-in test. i assumed it was dodgy ram [hence the other post!] but someone just told me that error message means cpu instability...

still perplexed!

<b>my cpu runs so hot I dont need central heating in my house!</b>

My tbred b 2100 ran at 11.5x199 on 1.9 volts fine but the mobo undervolts the memory to 2.66 instead of 2.7 so it wont do 200mhz at 2/2/2/6 so I keep it at 199 but it overclocks the fsb abit so I get 199.7mhz fsb lol. Get better cooling, up the voltage to the cpu and try again.

BTW my 1700 is sitting at 12x198 on 1.85 volts. Will easy do 11.5x206 though if i up the voltage to memory.

<A HREF="http://service.futuremark.com/compare?2k1=6790821" target="_new"> MY RIG </A>
<A HREF="http://service.futuremark.com/compare?2k3=1065087" target="_new"> 3D-03 </A>
<font color=red> 120% overclocker </font color=red> (cheapskate)

He wont get much higher than 210mhz out of that memory coz its same as mine, and in the reviews it got to 212mhz 3/3/3/8. Mine can do 213mhz 2.5/3/3/8 and thats it. Also if his asus board is lower than rev 2 then he may struggle.

<A HREF="http://service.futuremark.com/compare?2k1=6790821" target="_new"> MY RIG </A>
<A HREF="http://service.futuremark.com/compare?2k3=1065087" target="_new"> 3D-03 </A>
<font color=red> 120% overclocker </font color=red> (cheapskate)

Quote:
Also if his asus board is lower than rev 2 then he may struggle.

Aaah, this cud be the primary reason for him to get hangs at 200 FSB. i didnt think of it earlier.

so wigwam, what rev is ur mobo?

<b>Never Underestimate The Power Of Stupid People In Large Groups</b>

no, the reason i am so frustrated about this is becuase i spent alot of time researching and cherry-picking my components hence i searched long and hard in the UK to get that particular ram, i insisted on the AIUHB tbred 2100+ and i made damned sure that i got a rev2 board.

i have also flashed the bios to 1004 [i know 1005 is out but didnt seem to be many fixes on it vs 1004].

<b>my cpu runs so hot I dont need central heating in my house!</b>

could you guys reiterate for me then - i will assume that i could get higher FSB by upping my vcore, but i have seen many many postings saying that this chip can get to 200MHz fsb on stock vcore - i take it that isnt the case and i note even on your rig SpeedUk you have 1.9V for 199MHz.
Increasing vcore isnt an option for me at present as my Falconrock2 isnt upto the cooling [esp as i am hitting 60C at 1992MHz already]

i am also confused cos i thoght you needed to up vcore to increase overall speed, not to use a higher FSB but i can get to 2075 [13*166] with stock vcore but not 2000 on 200*10. Do i take it then that it isnt just speed but what FSB you use that also determines needed vcore stability?

i want to understand this properly so i am grateful for you patience and info to me.

It just doesnt feel nice at present to put effort into my toy and not have it behave like ppl on the forums claimed it should..

<b>my cpu runs so hot I dont need central heating in my house!</b>

Hey, u dont need to up ur Vcore to when u increase the FSB but keep the multiplier down so that the end resulting speed is not altered.

For ex: suppose the system runs stable at 12*166. u dont need to up the Vcore if u set it to 10*200. Cos the clock speed remains the same. The reason u cant run stable at 200 FSB is either because of ur RAM or because of the chipset. Since urs is a Rev 2.0 A7N8X, i believe its the RAM. But then again, u said it was stable at 9.5*200. aaah... all this is confusing me... i wish someone more knowledgable is here.

<b>Never Underestimate The Power Of Stupid People In Large Groups</b>

tell me about it!
you know though i think it might even be a M/B because even though i had 1004 bios i found that it kept hanging recently when i tried to change ANYTHING and then exit. i had to poweroff to get any life out of it.

i checked the ram by unclocking all the way to 7.5*200 with ram at 200Mhz and ran the sandra memory burn test and it was fine.

interestingly though even at this piddly speed it cpu diode temps by MBM were 46Cidle and 52C load!!! [the socket temp was 34C and i wonder if it might be a MBM quirk?]

anyway..i then tried to up it to 8* and iit just would not have it at all - hanging on exiting from bios needing powerdown.

so i have just flashed to bios 1005. down have the will to live with this problem at the moment so back at my trusty 12*166 for 2nite and will try again 2morow...!

hopefully by then a "guru" will take mercy on us!

<b>my cpu runs so hot I dont need central heating in my house!</b>

Well MBM5 is the most accurate temperature monitor, ignore socket temperature, it's normally far off. Like mine it says socket 31, but the Diode under load is about 40-48

I hate Computers! I could only overclock my Barton 2500+ to 2645mhz. My Radeon 9700pro core/mem speed won't go above 410/720. I really hate computers!

i started getting cold feet about the whole thing - it remained okay at 7.5*200 but wouldnt even boot at 8*200 so i decided to just go back to my working settings.

have had probs intermittently whengetting out of the bios but ths time it wouldnt boot when exitting the bios and is now dead.

clr cmos, remove battery, jumpers etc etc - zip.

gonna try to check cpu/m-b with friend's machine but maybe it was a dodgy m/b all along?

as you can imagine - VERY unhappy.

<b>my cpu runs so hot I dont need central heating in my house!</b>
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