Better yet back the cpu down to 2555mhz and see if that takes care of your blue screens, if it does then you can decide if it is worth 5 extra mhz. to continue trouble shooting and possibly replacing the psu, etc...
Better yet back the cpu down to 2555mhz and see if that takes care of your blue screens, if it does then you can decide if it is worth 5 extra mhz. to continue trouble shooting and possibly replacing the psu, etc...
alright, so in an attempt to isolate the problem....i am first gonna try Toro's suggestion and run the cpu at 255fsb x 10 (2550Mhz) let's just hope it won't blue screen
I doubt the RAM is the problem, though I think a bump to 2.7v would be prudent. My 2GB Plats do 233 @ 2.5-3-2-5 with 2.7v and no stability issues in the last 6 months (OCZ recommends 2.7v and no more for their "stable" 220MHz overclock settings). I'm also running a x2 3800+ on a A8N-SLI Premium. It's currently at 281x9 and 333 div for 230MHz on RAM. I'd vote for PSU...
great....i never even heard of this before...i still have warranty on my psu and mobo at the place where i bought it (extended warranty)...
if it was the psu or mobo, anyway to prove/test/show that its defected?
btw, i'm my A8N-E is a Rev. A3 and i'm using the newest bios 1013...
The problem was with the NeoHE line of PSUs, so I don't think it would be a compatibility issue with your Smart Power 2.0
yea, i've never heard anything wrong with the antec psu except with the P150 case that came with the neohe psu while using asus mobos.....but the problem was fixed in a few moths
here's somewhat of an update.......it seems that my system blue screens whenever i exit out of standby (while overclocked and stock settings)....does this have anything to do with my instability?
You can often get BSOD with stock clocks, it just requires some driver issues, but most of the BSOD's I've had due to driver issues happen on boot right after installing the driver, and not during general use.
So yeah, most likely to be a hardware instability causing a BSOD if it occurs during use and not boot.
Elfear
Diamond Member
- May 30, 2004
- 7,163
- 819
- 126
Maybe video card drivers than?? Which Catalyst drivers are you using?
I had a really weird issue like this a while back when I was running an MSI Neo4 board. It would Prime and run Memtest all day long but when I tried to do normal apps it would bsod. After tons of troubleshooting I finally tracked it down to the sata locks not working. If the FSB got raised over a certain amount my sata drives would freak out. Not sure if your Asus board has similiar known issues but it might be worth looking into. You could test this by running your chip at 256x8 with a 133 or 166 divider. That should take your cpu and ram out of the equation as long as they will play nice with that particular multi/divider combo.
Am I understanding this correctly to indicate that every single time you come out of standby mode you get a BSOD, regardless of whether or not you are overclocking? If so, you need to resolve that issue first. Until you are truly stable at stock speed you cannot be stable overclocked. My first thought would be to disable advanced power management and tell it not to go into standby mode, but that's more sidestepping the problem than fixing it. You may need another thread.
Generally it's best to avoid overclocking RAM as much as possible. The whole point of buying fast ram is to allow higher fsb speeds with locked multipliers. Keep your ram either underclocked or at stock speed while testing higher cpu speeds, that way you eliminate that variable.
What are your cpu temps while overclocked and at stock speed? Is there variation in room temperature? Is there anything else on that circuit that draws a load? Coming out of standby would cause a spike in power demand on the psu. Perhaps try unplugging all of the drives other than C: to reduce power demand. If it doesn't crash then you know the problem is either the PSU (most likely) or the other drives or the mains power could be insufficient during peak demand hours. You haven't gotten any brownouts or dimming lights, have you? You could have temperature/power fluctuations due to the summer heat.
Standby issues aside, the standard procedure is to lower memory speeds to stock and decrease the cpu overclock by the smallest increments possible until you find one that is truly stable. Once you reach that point, you can probably go back up one or two increments by increasing the voltage slightly, but it may not be worth the trouble.
it gets a BSOD when exiting standby regardless of being overclocked or stock settings.
well, currently the temps are okay (idle temps--cpu:39C, gpu:44C, ambient:28C)
i'm running a ups with AVR, so brownouts or any other thing shouldn't matter
I only have one drive and one optical drive....psu should handle the load
I'm not really sure if this standby BSOD has anything to do with the BSOD that I get when overclocked....may be completely different
Someone mentioned that it may be my video card. Under device manager, there's an unknown device (not sure why it didn't get installed properly) with a location that states "on RADEON X800 Series"....I have already tried doing a full uninstall (remove old drivers then using drivercleaner) and then doing a full install but it still hasn't really fixed the unknown device problem. I've tried clicking on "Reinstall Driver..." or "Update Driver..."; it points to the location of "C:\ATI\SUPPORT\6-6_XP-2K_DD_33678\2KXP_INF" but then it doesn't find the driver. Could this be why i get BSOD when exiting standby?
well, currently the temps are okay (idle temps--cpu:39C, gpu:44C, ambient:28C)
i'm running a ups with AVR, so brownouts or any other thing shouldn't matter
I only have one drive and one optical drive....psu should handle the load
I'm not really sure if this standby BSOD has anything to do with the BSOD that I get when overclocked....may be completely different
Someone mentioned that it may be my video card. Under device manager, there's an unknown device (not sure why it didn't get installed properly) with a location that states "on RADEON X800 Series"....I have already tried doing a full uninstall (remove old drivers then using drivercleaner) and then doing a full install but it still hasn't really fixed the unknown device problem. I've tried clicking on "Reinstall Driver..." or "Update Driver..."; it points to the location of "C:\ATI\SUPPORT\6-6_XP-2K_DD_33678\2KXP_INF" but then it doesn't find the driver. Could this be why i get BSOD when exiting standby?
New update: the blue screen when exiting standby may be caused by the amd dual optimizer, and i'm pretty sure it's not the same one from the overclock
So....for the past week or two...i've still been testing the system...it seems that the system is STILL unstable (bsod) at 255FSB x 10 Multiplier with a ~213 mem frequency (vDimm at 2.6)
What i'm testing now is back at the original 256FSB and this time i'm testing the command rate (since asus is known to have some problems with this; the default is also set to 2T). The ram frequency is at 213 at 2.6V....
So....for the past week or two...i've still been testing the system...it seems that the system is STILL unstable (bsod) at 255FSB x 10 Multiplier with a ~213 mem frequency (vDimm at 2.6)
What i'm testing now is back at the original 256FSB and this time i'm testing the command rate (since asus is known to have some problems with this; the default is also set to 2T). The ram frequency is at 213 at 2.6V....
Why not try putting your vcore up to about 1.5 and vdimm to 2.7 or 2.8
I suspect that wont fix it though, because technically it would need more volts in full load than idle...
I suspect that wont fix it though, because technically it would need more volts in full load than idle...
Obviousely CPUs need more power when they are working
Anyway the point was he gets BSODs when at idle so more volts might not help.
Originally posted by: Sh0ckwave
Obviousely CPUs need more power when they are working
Anyway the point was he gets BSODs when at idle so more volts might not help.
I think TcG was trying to point out that under full load it needs more current but runs at the same voltage regardless.
Speaking of V=I*R, for the materials in a CPU the resistance increases as the temperature decreases so why will you get the best overclocks when at crazily low temps. like -120C ? I can see giong to something like -40C helping because removing the heat allows for vastly increased voltages but beyond a certain point I would think that the resistance of the pathways would simply get too high.
myocardia
Diamond Member
- Jun 21, 2003
- 9,291
- 30
- 91
I bet I know what your problem is-- it's the same thing it took me awhile to figure out about my MSI K8N Neo Plat-- when I put the cpu under load, the voltage stays very, very close to where I want it. But, when it's idling, the vcore fluctuates enough to cause BSOD's, since the memory controller is located on the cpu die. I've actually seen the voltage go down .05v, when going from load to idle.
That means you'll need to raise your vcore .025-.05v, if you don't want to drop your overclock. Of course, you should try giving your RAM a bit more voltage, or at least going to 2½-3-3-5 or -6 timings, just as a test. I have the same RAM, and I have to give it 2.70v, to keep from BSODing at stock speeds. Of course, that's all I give it when I'm not at stock speeds, I just raise the timings a bit.
yea....the vCore on my board does flucatuate a lot.....(set at 1.4V but it can go from 1.33-1.44).........just out of curiousity, are the fluctuations caused by the motherboard or the psu (i'm guessing the mobo). Even if it does fluctuate a lot...then shouldn't it BSOD almost instantly when the vcore drops during prime95/gaming?
Yeah, the vcore fluctuations are mostly caused by the motherboard not the PSU.
Some voltmods should fix it...
yea....i should mention that the vCore usually only fluctuates between 1.376-1.408 (using cpuz)....it rarely goes to 1.33 (only seen it when i leave the comp on for a few hours and check the minimum vCore under speedfan; so i'm not entirely sure if its accurate because it's speedfan)
I had that same board and case/PSU. I also had random BSODs every few days or so, even if runnign stock. After replacing just about everything else, it turned out to tbe the board. replaced it with a DFI model and it has been crash free since.
Make sure that the chipset fan on the board is working correctly as some A8N series boards have issues with it failing. The heatsink on the VRMs is not glued on very well and may be loose.
It may also be an issue with newer Antec PSUs and the A8n series, though that may only be the NeoPower that have the issue.
Make sure that the chipset fan on the board is working correctly as some A8N series boards have issues with it failing. The heatsink on the VRMs is not glued on very well and may be loose.
It may also be an issue with newer Antec PSUs and the A8n series, though that may only be the NeoPower that have the issue.
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