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post #461 of 583
First off let me say I am sorry for posting here. Most of the attempted unlocks I am doing have been on the Phenom II x3 720 BE. I think the Athlon II I have may be able to unlock to 4 without issue if I were to up the voltage. I might test it out this weekend, but for now I will take this issue over to the correct thread.
post #462 of 583
Quote:
Originally Posted by Belial View Post
yea I never have issues with temps. Unfortunately I invested in cooling before I found this out (this was because there was an issue where I believed I was incorrectly reading temps as they were below ambient - yes I know unlocking screws things but they were the same both at stock and at unlocked - but now I think my low temp is just very very impossibly below ambient low but 'normalizes' at load to the true temp or close to it).

It would be awesome if I could just overvolt to like 1.7 since temps aren't an issue, and still would probably be okay at 1.7, 1.8, but then I hear that's where voltage itself becomes a concern.

I've done a lot of testing at 1.52v or so, just as a test. I think maybe I hurt my CPU in the month i've had it with all the testing? I haven't done any 24 hour tests yet but probably average 2 hour of testing a day. Temps never go above 45*C, ever though.

I really have no idea *** happened. Before I was pushing 4ghz (although it wasnt stable I could boot and it was stable enough for normal usage) and was dissapointed to have to settle at 3.51ghz for prime95 stable. Now, suddenly, i can't even hold 3.45ghz with even higher voltages than the 3.51ghz, and that isn't even under hours of testing, we're talking like 30 minutes of testing, hell even just watching videos on hulu or youtube.

I think i may have to settle for about 3.44ghz with 1.49v or so. This is just insane! It may be a RAM issue? I have no idea *** happened, i reset everything to stock, simply raise my FSB to 215 or so and it's borderline stable. 215FSB on high voltage doesn't work. Such a dramatic shift in the last 2 weeks! It's so aggravating because I figured I finally had the perfect CPU voltage for p95 stability, where literally 10mhz higher was instable, and was finished overclocking my RAM to ~700mhz (meant leaving it at 1066 w/8 timings, maybe 7) and was beginning to test overclocks on my CPUNB, and suddenly its like I have to redo everything again.
Yeah, one thing I learned in my 3 years is that it's not as easy as figuring out what''s failing in a car. I just thought of another possibility that it could be and that's the motherboard. I'm not sure how to figure out if that's the issue though.

The reason I thought RAM is because of several reasons: 2 big ones is BSOD's (you did mention that right? or I'm confusing with someone else) and the fact that we have no way of gauging temps on them. So we don't know if they're struggling to keep up.

Now I'm thinking motherboard as another possibility. Just thinking about all the many capacitors and VRM's and what-not. If just even 1 of those is degrading, board isn't keeping up anymore. This degrading theory is what got me thinking about how you keep saying that your stable overclock is just getting lower and lower like something's degrading. Seems like CPU's are pretty hardy now a days and we're always finding out that some other component is the culprit.

I'm ruling out PSU in this case because Earthwatts are pretty decent from what I hear.

Quote:
Originally Posted by Gheris View Post
First off let me say I am sorry for posting here. Most of the attempted unlocks I am doing have been on the Phenom II x3 720 BE. I think the Athlon II I have may be able to unlock to 4 without issue if I were to up the voltage. I might test it out this weekend, but for now I will take this issue over to the correct thread.
No biggie dude. They have similar stories as far as unlocking goes. Another thing I think I'd try is to downclock it some and then try. One thing I noticed in testing my unlocked core is that the unlocked core lagged behind the others.
Edited by Krusher33 - 3/23/11 at 7:20am
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post #463 of 583
Quote:
Yeah, one thing I learned in my 3 years is that it's not as easy as figuring out what''s failing in a car. I just thought of another possibility that it could be and that's the motherboard. I'm not sure how to figure out if that's the issue though.
Entirely possible. My motherboard, well, it's pretty bad (more like cheap). It's Biostar, which people claim is high quality when it comes to the VRM, but I can tell this board is cheap - although it has solid caps and ferrite chokes, everything else is bad (3+1, 4pin, no drivers, no Low RDS,). I made my own custom heatsink and installed it onto the VRM, which is actually one thing that is different. I can't imagine how installing a heatsink on my VRM would screw up everything - I can see they are venting some of the heat.

Check out my pics/thread here about it:
http://www.overclock.net/air-cooling...atsinks-4.html

Quote:
The reason I thought RAM is because of several reasons: 2 big ones is BSOD's (you did mention that right? or I'm confusing with someone else) and the fact that we have no way of gauging temps on them. So we don't know if they're struggling to keep up.
Yes most of my fails now are suddenly BSODs, before it was a alot of resets and more 'minor' crashes. I just failed prime95 after 9 hours on 3.44ghz, 1.49v, everything else stock.

However I can monitor temps, I have a temp controller and have temp gauges everywhere (this is because my CPU temps are below ambient, or incorrect, although I think it just means its low is wrong and its high is 'normalized' since same as load temp on controller). My RAM is actually one of the hottest components during prime95, at 38*C. My VRM is the second hottest, with the heatsink getting to about 36*C. The CPU, then, gets to about 34*C. Nothing ever goes above 42*C.
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post #464 of 583
you know when you get down to it, its just 3.51 to 3.44, which is about 60 mhz, not that much. I'm just all hot and bothered because 3.51 wasn't that much to begin with. Although I never got around to a 24hour test, 3.51ghz NEVER failed, and suddenly I'm failing within 5 minutes around 3.45ghz at 1.5v. Seeing as I failed after 9 hours on 3.44ghz on 1.4v, I will probably either bump up the voltage to 1.5 or dip the CPU to 3.42-3.43 at 1.49v, maybe lower voltage since I imagine my sweetspot went from 3.51 to 3.4 now (before I would never crash on 3.510, but would on 3.52 fairly soon).

I'm going to do a search on Motherboard overclock degradation because putting that heatsink is the only change I can think of. I would love to just overvolt to 1.6 since my temps are never above 40*C but I guess that would just worsen things, especially if degradation was an issue.
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post #465 of 583
I've seen cases where folks lowered volts. Tried that?
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post #466 of 583
Lowering vcore you mean?

Well last night I ran another test, where I did the following different, partially because I was familiar with the system so knew how well other things handled:
255 -> 253
13x5 Multiplier
~2000 NB to 2200 NB
9 timings to 8 timings
3.4425 ghz to 3415.5ghz
vcore dropped from 1.488 to 1.472

The system failed after about 10 hours, lasting a little longer than the night before's overclock. So I'll probably raise vcore back to 1.488 and test it.

But since stock is 1.34 im not sure what you mean? im not testing at that high a voltage.
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post #467 of 583
I meant dropping vcore like you did, hehe. Sorry I wasn't specific.

I'm assuming memory speed is in a good spot too?
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post #468 of 583
memory speed is around default 1333mhz, but I tested with it dropped below stock and still had issues.

So I just did the following overclock:
253 x 13.5 = 3415.8 ghz
HT 1777
NB 2530
DRAM 674

This is essentially the same overclock as above that failed, but I raised vcore back up to 1.488 from 1.472. Apparently dropping the vcore didn't help, i needed that 1.488, and it was stable for about 6 hours so I'll continue the testing. I think it may be more stable, and the CPU is the culprit. I assumed that those raises in the HT and NB would be fine (this way I dont have to test again when overclocking those, and I already know the CPU is the main culprit and the fact I had 6 hours already shows they aren't a problem).

I dont think timings could go lower or HT (NB is already maxed out, 253 is close to my max bus speed at 267 and at max multi anyways).

Anyways this isn't about those other parts of the system, I'm talking about my degrading CPU speed! I'm not sure why I suddenly lost 50mhz, maybe it was never stable at 3.51 in the first place. I know I didn't do priority correctly (newer versions of p95 have the option located somewhere else then all the guides say) but it was still crapping out immediately on my 'incorrect' priority suddenly. I don't have the best motherboard, and this happened right about when I installed a custom VRM heatsink (sawed up a stock heatsink, thermal taped it on mosfets) but I can't see that hurting things.
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post #469 of 583
Yeah I don't see putting heatsinks on VRM's as hurting either LOL. Unless of course one of them is not being effective for whatever reason and it's not cooling but I just can't see how on VRM's.

As for the drop in frequency, boggles me as well. It's not like you've got some ridiculous amount of voltage pumping which is why I keep thinking out side the box.

I'd say try it out for awhile and if it drops again... cause for concern.
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post #470 of 583
Quote:
Yeah I don't see putting heatsinks on VRM's as hurting either LOL. Unless of course one of them is not being effective for whatever reason and it's not cooling but I just can't see how on VRM's.
I know my heatsink is working because it feels slightly warm and my temp monitors (stuck in between fins in top where I feel it gets hottest and in middle) rise and fall accordingly with prime95 testing and general usage. They usually read around 35-40*C, and despite only being stuck in between the fins I think they are actually very accurate.

Quote:
As for the drop in frequency, boggles me as well. It's not like you've got some ridiculous amount of voltage pumping which is why I keep thinking out side the box.
At 3.415ghz Prime95 failed at the 8th hour on 1.472, but at 1.488 I tested for 18 hours and stopped it myself. So that's really a 0.95ghz drop. And although I wasn't testing correctly, such as not setting priority to 10, I know that if I set my processor to 3.51 or even 3.45 it would fail at priority 1 prime95 instantly now, suddenly. It isn't that big of a drop, but since 3.51 wasn't that impressive in the first place, it's disheartening I got an aftermarket HSF for just 200mhz (i do think it makes a difference and will help with the life of the CPU though, instead of running at 55*C which is what stock settings on stock cooler would be at, Im at 40*C on an overvolt/overclock). But I agree with you, if it drops any more that would be a huge cause for alarm, but for now I guess I just have to roll with the punches.

I would really like to overvolt to over 1.6v given my low temps, but since my CPU may have degraded just for toying on 1.5-1.55 for just a short time, I don't know if I should. I also know that, before, when I was getting 3.510, I couldnt get any higher no matter if the voltage was 1.488 or 1.6 (yes tried it just for a second, failed right away lol). My 3.51 was rock stable, I guess, but 3.155 was fail within 30 minutes.
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