Overclock 3000 Sujjestions

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glowtraq

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I'm running a Venice 3000 on an A8N-Delux, I recently went ahead and decided to over clock from stock 1.8GHz to 2.7GHz. I successfully over clocked to 2.7 using a multiplier of 9*300 at 1.52VCore. I set the ram to Auto which is running at 5332@266Mhz. For some reason I've been getting hiccups during dvd playback, gameing, sound playback. This never happened before the overclock where entire programs stall for a slight second. My question is, is my over clock safe or am I missing something I should change? I also noticed other options within the bios that affect my pci express rate, could this be the cause of the stalls? Any help or incite towards creating a solid OC would be appreciated. Thank you.
 
*cough* Suggestions *cough*


One does not simply decide to go from "A" speed to "B" Speed. Your post doesn't give us alot of information. Have you run Prime95? How long does it run before giving an error?

What are your HTT Multi?
What is your mem voltage?
What is your chipset voltage?
Have you tried running mem dividers?
What is your ram rated for?
 
Thank you for the response. Hope the information below is helpful.

I have not run prime95 and plan on doing so overnight, will post the results. I did run Memtest for 12 passes, no errors were logged.

These are my current settings.

CPU Muti= 300
HTT Multi= x9
Mem Voltage= Can't tell, but this is currently set to auto.
Chipset= Cannot find this option within the bios.
I don't know what mem deviders is.
1gb 2x512 twinx rated at 2225 DDR PC3200

I copied these voltage settings from the hardware monitor section of my bios.

vcore=1.525
3.3 Voltage= 3.336
5v Voltage= 4.97
12 Voltage= 12.03
 
I think you're confusing your HTT Multi with your CPU multi.

At 300 FSB your HTT multi should be 3.

Also I believe you are going to need to pump up the volts to your RAM. Auto should only give it the stock voltages. Also your going to want to try a divider on your ram. I have a hard time believing that your RAM you have can run at DDR 600. Try setting your memory speed to either 600Mhz or 800 Mhz in the BIOS or whatever divider system your board uses. What brand mobo by the way?
 
Anime_Fan thank you for your response.

My motherboard is an Asus A8N-SLI Delux. Setting my Memory speed to 600Mhz or 800Mhz locks my system up, the highest the memory speed can go with the current OC is 266Mhz. I will try a few manual voltage rates for the memory to see if that helps.

My HTT is 300
My Multi is x9
 
Try putting your mem volts at 2.85 or 2.9 and see what happens.


You should read Eclipse's guide to A64 Overclocking It gives you all kinds of information :)
 
I ran prime95 overnight and a fatal error accured: rounding was 0.5, expected than 0.4, hardware failure detected. I did consult stress.txt which gave me allot of information sujjesting changes to fsb or voltages. The weird thing is the toture test ran for 7 minutes - 1 errors, 0 warning. I'll try increasing the sujjested voltages too see if that helps. currently at the time of the error, i'm at 9*300, memory at 266Mhz:5332 HTT Frequency is set to Auto.
 
As mentioned above, you might have your HTT bus running too fast. There is a multipler for the HTT as well as the CPU. By default, it is set to 5, and if you have HTT base at 300 that would be equal to 1500Mhz after the multipler, which would be way way to high. I read that you shouldn't push that past 1000Mhz, unless you have the chipset on water. So drop your HTT multi in the BIOS so that the total HTT frequency will be <= 1000. At 1000/300 = 3.333, so 3 should do fine.
 
Slithy, I apologize for the confusion, I went into the bios and wrote everything down that I've changed. HTT Frequency is set to Auto, the max is x5, CPU Frequency is set to 300, CPU Multiplier is set to x9, and DDR Frequency is 266 MHz with timing 5:3:3:2.

The Prime95 hardware errors were caused by low memory voltages, originally the v dim was set to 2.65, which was moved in single increments and tested, the second increment tested at 2.7 failed, after changing to 2.75 prime95 ran FFT past 20K and was stopped manually at 24K without any errors. Temperatures and overall volts were monitors, CPU remained at 1.52v at 52 degrees end test and motherboard temperatures remained at 35 degrees. I plan to run Prime for 24 Hours and will post the results. I really don't understand the divider system of the ASUS A8N and hope to figure out how it works. If I am missing something, any feed back is aprechiated. Thank you.
 
glowtraq said:
Slithy, I apologize for the confusion, I went into the bios and wrote everything down that I've changed. HTT Frequency is set to Auto, the max is x5, CPU Frequency is set to 300, CPU Multiplier is set to x9, and DDR Frequency is 266 MHz with timing 5:3:3:2.

The Prime95 hardware errors were caused by low memory voltages, originally the v dim was set to 2.65, which was moved in single increments and tested, the second increment tested at 2.7 failed, after changing to 2.75 prime95 ran FFT past 20K and was stopped manually at 24K without any errors. Temperatures and overall volts were monitors, CPU remained at 5.52v at 52 degrees end test and motherboard temperatures remained at 35 degrees. I plan to run Prime for 24 Hours and will post the results. I really don't understand the divider system of the ASUS A8N and hope to figure out how it works. If I am missing something, any feed back is aprechiated. Thank you.
Click to expand...
Actually, the P95 error was because your ram is overclocked too. Increasing the voltage seems to have fixed it, which is good. If your CPU were getting 5.52 volts, it would be a smokebomb, not a processor-I assume you meant 1.52.

Please do read that Eclipse guide. It sounds like you're getting close to stabilizing a good OC, so actually knowing what's going on might be good idea :) (not being harsh, just a little sarcastic)
 
glowtraq said:
Slithy, I apologize for the confusion, I went into the bios and wrote everything down that I've changed. HTT Frequency is set to Auto, the max is x5, CPU Frequency is set to 300, CPU Multiplier is set to x9, and DDR Frequency is 266 MHz with timing 5:3:3:2.

The Prime95 hardware errors were caused by low memory voltages, originally the v dim was set to 2.65, which was moved in single increments and tested, the second increment tested at 2.7 failed, after changing to 2.75 prime95 ran FFT past 20K and was stopped manually at 24K without any errors. Temperatures and overall volts were monitors, CPU remained at 1.52v at 52 degrees end test and motherboard temperatures remained at 35 degrees. I plan to run Prime for 24 Hours and will post the results. I really don't understand the divider system of the ASUS A8N and hope to figure out how it works. If I am missing something, any feed back is aprechiated. Thank you.
Click to expand...

It sounds like you have a very nice motherboard for new overclockers!
Most of the work is taken away from you by the Auto settings, I like the one for HT, mine has to be set manually.
You only seem to have to set the HTT speed and the mutiplier for the CPU (and volts if pushing it).
Nice find.
 
When you OCed you CPU did you go from 1.8 (stock) to 2.7 in one step?

Also you really should start over with you OC and redo it to find good stabilty and max OC combo with you RAM, CPU, MOBO....

I had the same mobo but it wasnt stable @ T1 over 240mhz.... so look and see if you mem is @ T1 timing... like a 10-30% performance decrease if your at T2

Really start over.... go into bios and reload defaults....


Start your OC with
HTT x 3
200 HTT
9 CPU x
133 MEM
CPU voltage 1.40?? i think is stock
Ram at SPD timings

then run prime for a couple of hours to make sure everything is good when we start....

Then
bump up you HTT (FSB) from 200-250 in 5-10mhz incraments

run prime for atleast 30 min @ 250 MHZ
If it passes move on
if it fails increase voltage (w/ that mobo and a decent cooler not stock you can get to max vcore of 1.55 on that board with out any problems so dont be afraid :)

then after it passes go up to 277 HTT in 5-10 mhz at a time.... run prime and repeat

watch your mem and try nad keep it around 200 mhz... lower the divider if it gets over 220.... CPU-Z is a great program... google it and download it.

once you find you max OC for you CPU then find it for your RAM

Start at 200 HTT
CPU x 7
CPU Voltage at 1.4 or auto
RAM divider 200
and timings for what ever you ram is set to run at (manually do it)
HTTx3
then up your FSB in 5-10mhz at a time and run SUPERPI 1M test (its not total stabilt but it will give you a good idea)
I dont like loose timings expecially on 512 sticks so i would keep them at SPD rated
once it fails then you know about max OC for your RAM

then bust out the TI-83 (or lesser calculator) and find the best fit for you components... ie 9*250 w/ mem divider at 200 if max OC for CPU is around 2.3ghz and ram is @ 250mhz... or what ever you find.

Then run Prime95 for atleast 12hours to test stability....
after it passes then you can say you have stable OC

Not starting over will make it hard to really determine your max OC
 
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