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Athlon X2 3800+ overclocking adventure - Page 4

post #31 of 41
it's odd that you're having so many problems at such low fq's. I didnt start running into instability until 245Mhz FSB, everything else was stock.

Your memory might be the culprit here. Try raising the voltage on the RAM .1V You can also try setting the timing down, from say DDR400 to DDR266. That is what allowed me to go past 2.4Ghz and onto 2.71. ( With some raised voltage of course ).
    
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post #32 of 41
Thread Starter 
logan, you have the best ideas.

Well, after restarting again, my bios gave me a checksum error and fortunately just reset itself rather than not booting. So I'm back to stock settings at the moment.

I'll try the timings first. I had left them on automatic when i first raised the FSB to 210 and 220 so they adjusted from 3 to 2.5, but before raising to 230, I set them on manual at 2.5 I guess that could be a problem.

I have noticed my voltages fluctuating. Right now using Harware Sensors Monitor my +12v ranges 11.97-12.03v, +5v (2.57-5.17v), vcore 1.31-1.33. I don't know if those are extreme enough to worry about. I've also noticed that whenever the ktichen upstairs has appliances on, my screen "shakes" so I've assumed that my pc outlet is affected by those devices. I may have to try a second outlet.


EDIT: Ok, I've changed the timings, but kept the vcore at standard 1.350. This time it boots (as opposed to having to raise vcore at 2.5 timing) and have tried again, but same error comes up. Now I'm wondering, if it really is the memory that's causing these problems, wouldn't it show up while running memtest (which i have been doing, and shows up clean)

Right now, no extra appliances are on in the kitchen, so nothing's drawing extra power.

I'll continue fiddling.

EDIT2: I've upped the vdimm by 0.2 and it was looking hopefull for a couple minutes as prime95 didn't give me an error at the same time as the other tries. It came later. vcore is at 1.40.
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post #33 of 41
sorry i had a class to go to.... finals are coming.(shudder)

so the raised vdimm and loosening the timings helped a bit, but your still running into errors on prime 95 very early on. your 5v line seems to have alot of fluctuation. but the 12v one seems fine.. what amperage is it putting out? its just really weird that your having problems this early on as cronic said.... so something else is probably the culpret here... how many sticks of ram are you using (512x4 or 1gigx2), and is it all the same brand? that can cause problems if your ram isn't matched up.
post #34 of 41
Thread Starter 
Good luck on the finals.

I'm using 2 1gig sticks of Identical corsair valueselect. Lowering the divider again to 1.5 didn't help.

As for the PS, Enermax states it has 22A on both 12v rails, but I don't have any physical meter to check the wires directly, is there software that reads that info?
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post #35 of 41
there are a couple different temp monitoring programs that do that, as well as CPU-z, well actually i dont think that i know of any software that measures amperage. those other programs just show if the voltage is fluctuating. this is still wierd, try upping the vcore again... just dont go above 1.5v for now, although you shouldn't be needing tons of voltage this early on.
post #36 of 41
Thread Starter 
alright, looks like i finally got at least temporary stability by upping the vcore to 1.450. Temps are about 45, so not too bad. I'll be stressing at this step for quite a while tonight though.

However, I am a little worried that cpuz reports my voltage fluctuating at 1.440-1.456, or is this normal?
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post #37 of 41
Dont trust cpu-z when it comes to voltage and a small fluctuation like that is normal, if it went from 1.44-to like 1.48 then you might have a problem .
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post #38 of 41
A clarification point on your PSU.. while the Rails state that they are 22A, the max. available across these rails is actually 32A total - PEAK. Under the ATX12V2.x PSU specification no +12V rail can suppy > 20A.

To ensure that the PSU is not drooping under load each of the key rails +12v, +5v, +3.3v need to be check when Posting, at OS Idle, OS Load for any given OC, the only sure way to do this is with a meter... SW will not give you the true answer.

Any Vcore fluctuation will be up to the MB voltage regulation, ideally this should be steady as any change, albeit small will have an influence on the OC stability esp. once you get up close to the Max for the given cooling.

Keep on working it through
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post #39 of 41
Quote:
Originally Posted by mrpicolinni
alright, looks like i finally got at least temporary stability by upping the vcore to 1.450. Temps are about 45, so not too bad. I'll be stressing at this step for quite a while tonight though.

However, I am a little worried that cpuz reports my voltage fluctuating at 1.440-1.456, or is this normal?
45 is pretty bad man. I would look into better cooling. My retail AMD HS+Fan only went as high as 32C idle @ 2.4Ghz
    
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post #40 of 41
Thread Starter 
Cronic, 32 idle? I was speaking of 45 under 100% load on both cores, hehe. Idle temps at 30.

EDIT: Secondary mystery for anyone who's interested or knows a reason: I have an older athlon xp 1600+ system that I replaced with this current one. However, I kept my older hds and case from that system and used them in my current. This forced me to use an even older HD and case for the 1600+ pc. Now the bizarre issue is that the system no longer recognizes the athlon xp 1600+, instead it lists it as an athlon at 1045mhz in the bios, and an athlon mp in cpu-z. I then used a second cpu program called cpu informer which detects the cpu as the true 1600+. Any ideas on what exactly could have caused the bios to stop recognizing the correct cpu? Keep in mind it is the same system except for case and hd.
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