o/c problems

BudBud Chesterfield, Va
edited December 2003 in Hardware
I have a
A7N8X deluxe with 2500 Barton unlocked
PNY 512mb 3500- 1 stick
sk-7 with 80mm vantec tornado

I got it to about 2.3GHz and booted and wasnt stable so i tried backing off to i know where it was stable. So I set it at 10x200 @1.65v and 1.7v which is 2GHz. It boots fine and runs but at about 1-2 hours later it restarts, any ideas how this prob came about. I dont know what to do

Comments

  • ketoketo Occupied. Or is it preoccupied? Icrontian
    edited December 2003
    Bud, likely the inexpensive memory you have. I can't remember from all the other threads, have you run memtest?

    Also, a slight voltage increase may be in the cards, tho I haven't used a Barton personally and can't recall offhand what they can handle.
  • LawnMMLawnMM Colorado
    edited December 2003
    Try upping the voltage to the memory a bit
  • BudBud Chesterfield, Va
    edited December 2003
    how much do you guys think i should bump the voltage?
  • ketoketo Occupied. Or is it preoccupied? Icrontian
    edited December 2003
    cpu or memory? memory you can pretty much max out without much risk, ie. 2.8-2.9v.

    Cpu, as stated above I haven't had or worked on a Barton. I run my TBred B @ 1.85 all day every day for 8-9 months now and know some are higher than that but not sure if it applies the same to Bartons.
  • Straight_ManStraight_Man Geeky, in my own way Naples, FL Icrontian
    edited December 2003
    Actually, Bartons are natively lower voltage than Tbreds, by a little-- mostly for heat reasons as Bartons are denser inside and gen lots more heat in a smaller area than TBreds even.

    My Barton does not like much more than 1.75 voltage to run best-- and .03 more is much more for a Barton. The areas around my barton core on base die are discolored, the core is more resistant to heat damage, as far as the heat dumping ability of the core containment than the surrounding die. But it still runs hyper-well. I would say without Peltier or liquid cooling, you do not want to run a Barton more than 1.78 for more than 15 minutes running, or you are likely to trash things in its overall die or card part and have the core disconnected from the rest of the die by melting. Doing this is a fire safety thing, really.

    John.
  • BudBud Chesterfield, Va
    edited December 2003
    no they mentioned bumping voltage on ram. how much do you guys think i should bump?
  • Straight_ManStraight_Man Geeky, in my own way Naples, FL Icrontian
    edited December 2003
    Well, was relying to Keto with CPU voltage, but most RAM can take a 10-25% increase over its base ideal rate if it can be cooled fairly well. Let's say you have RAM at about 2.6 for base, 2.7 to 2.8 should be handled by any decent DDR RAM, and some folks have taken RAM higher with real good RAM and a mobo that supports smaller increments. Easiest way to tell what rest of system will do, is set to 2.7 and see if it stays stable, then if so, what I will do to know how a box will react as far as altering voltages to other things if I pump RAM voltages higher is to run memtest86 for 3-5 hours continuously in all tests mode after running higher than 2.7 volts. Memtest86 will boot right from CD, good way to make sure RAM is not slowly overheating.

    Trick when going more extreme than 2.7 or 2.8 Volts to RAM is to write down what you do, as each box is different in teh details of how it will react, and various DIMMs can act a tib different even within same brand and kind. NO QC is perfect, and OCing loads PSU more and the circuits that the mobo uses to get voltages lower than about 3 volts also, so trick is not to overload mobo cirucuits and figure out what is happening when things START to go unstable. Safest is to go slower and change one thing at a time, and see what changes where. RAM above 3.0 is EXTREME for most RAM, way overboard. Some RAM, in boxes with real good and big PSUs can run at 2.9. Most RAM will take 2.7 and 2.8 well if the PSU can handle that much power flow without starving other things too much as far as voiltage and amperage (which is primary reason for a no-boot after machine is off for a while and cool-- either something is getting no power, something is not getting enough power, or something is getting too much power OR something has internally failed). To go above 2.8 volts you get to also play with the termination voltage, frequently.

    John.
  • LawnMMLawnMM Colorado
    edited December 2003
    Bump it up in 1/10th increments if you have the option and see if it helps. If you're at 2.6 and nothing changes by the time you get to 2.9 you can safely assume its not ram voltage.
  • edited December 2003
    As long as you have decent airflow across the ram, you should be safe with 2.8-2.9v on it. Also, you might try relaxing your memory timings a bit if you have it running tight timings and see if that stops the random reboots. One other thing that also comes to mind is to check what you size and brand psu you are using. You might be running into random reboots if your psu can't deliver good clean power to your rig.

    The 3 bartons I have aren't sensitive to fairly moderate vcore voltages (1.85-1.875v) and definitely overclock better at the higher vcore. The barton I presently have in my NF7-S is presently at 2400 with 1.85v vcore and is running at 40 C while folding Gromacs WUs.
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited December 2003
    RAM can be bumped to 2.9v if necessary. Try just setting the timings to their slowest settings (largest numbers) and leaving the voltage at default, and see if that does anything.

    Ageek, I don't know what you're talking about. Bartons come default at a HIGHER voltage than the TBred B chips, and they do just fine at 1.85v+, as do the TBred Bs...
  • BudBud Chesterfield, Va
    edited December 2003
    my voltages are good right now im at stock everything and lines are:
    12v = 12.4v
    5v = 4.94v
    3.3 = 3.296v
    Vcore = 1.696v
    Im not sure but i thought right now ram is relaxed im at 1:1 ratio 2,3,3,7 @ 167 frequency
  • ketoketo Occupied. Or is it preoccupied? Icrontian
    edited December 2003
    Bud, those are TIGHT timings, relative to the fact that is is inexpensive RAM (I think?) - try setting RAM either "by SPD" or to something like 2.5-4-4-8, just as a test. Yes, it will *slightly* slow down your computer but that's not the primary objective of doing this, it's to see if the stability problem goes away.

    FIRST though, I'd up the bios vdimm (memory voltage) to 2.8v or 2.9v with your current (faster) timings and see if it helps.
  • BudBud Chesterfield, Va
    edited December 2003
    i dont know how inexpensive it is i bought it at compusa and thats pny best stuff meant for gaming even comes with purple heat spreader
  • BudBud Chesterfield, Va
    edited December 2003
    k bumped ram to 2.8v on ram and 1.75v on cpu. Right now am at 10x205 which is 2054MHz. Im gonna leave it folding all night and see how it does.
  • edited December 2003
    Sounds good, Bud. Let us know tomorrow if it quits rebooting on you.

    BTW, is that a rev2 Asus board? My old rev1.04 board would never run stably at 200fsb; 185 or so is the highest it can stably run due to the early stepping northbridge on it.
  • BudBud Chesterfield, Va
    edited December 2003
    yea its rev 2
  • BudBud Chesterfield, Va
    edited December 2003
    k seems pretty stable been folding and its still going only at 35C on the cpu too!
  • Straight_ManStraight_Man Geeky, in my own way Naples, FL Icrontian
    edited December 2003
    Ok, you have decent RAM and a decent PSU and decent power in. GOOD!

    High end PNY is decent, the Irish folk do a good mfring job and QC (Yes, PNY's MAIN mfring facility is in Ireland). I have only had to RMA 1% of high end PNY. Ditto Crucial\Micron Technoloies RAM, Ditto good Corsair. All have good QC on mid-high quality RAM lines they mfr as brand name.

    John.
  • BudBud Chesterfield, Va
    edited December 2003
    well where do you think i should bump now fsb or multiplier?
  • ketoketo Occupied. Or is it preoccupied? Icrontian
    edited December 2003
    Go fsb until your RAM quits.
  • edited December 2003
    Since you know you are stable to 200 fsb with your ram, I'd back off the fsb some and up the multi, then slowly work back up to 200 fsb. Do this until you find what the max overclock of your proc is, then back down the multi and go up on the fsb speed until you find what the max stable fsb speed is with your memory. Then set the multiplier to where you can run within 1-2 MHz of your max fsb speed and still keep the proc near it's max stable speed. Doing it this way might take a little longer but you will know what's crapping out, either memory or proc, if you just go ahead and up the fsb without testing the proc's max overclock first.
  • BudBud Chesterfield, Va
    edited December 2003
    k right now im @ 11x205 1.79v 37c been folding for hours
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