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AMD® Phenom™ II Overclocking Thread

Don't think I have posted mine up in here. Just a smidgen under 4ghz.

Rock solid and been running like this for over two months. :)

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buchtis: When you get a few hours spare then read this thread through from the beginning and everything you could ever need to know will be revealed to you . . . as an incentive to plough through nearly 2000 posts there are still some "unclaimed" free gifts hidden in this thread so get reading! :p

PapaLazaru: Another nice result from a C3 revision! . . . its always appreciated by the viewing punter if the screenies shows a loaded OverClocked processor with Idle/Loads temps and any other technical info you can squeeze in . . . I'm sure that processor has a bit more to give! :cool:
 
wayne, its a 555be, so a dual to quad unlock. I did post it a while ago, but with only an hour of prime in the pic. Going by the motherboards cpu temp +10.C (my general rule of thumb) it tops out at about 55-58.C under a zalman 9700 (the copper one) going full whack. If I leave the fan under its 'normal' minumum speed, then it overheats and crashes :(. That said, i got an Nvidia special edition of the cooler on the cheap a few weeks ago and swapped the fans around, so now im all PWM'd up. That shouldn't be an issue any more...

Anyway, that level of clocking is purely for bragging rights. IMO any regular use wouldn't be such a good idea. Nowadays it sits at 3.75GHz 1.375v (which seems to be stock although most other examples appear to be 1.35v) a 250mhz ref clock, 2500 Nb and HT.

as for the images, that surprises me. I also use imageshack but dont get any lines :confused:. A tiny niggle in the back of my head suggests graphics card (5770 stock clocks), but everywhere else is behaves just fine... but hey, they're just about legible.
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sorry about going off topic
 
Big wayne: Ive not done any 'proper' stability testing, when I had the chip in and the rug running I just upped the vcore to 1.45v and the multi to [20x]. I let it running folding@home for an hour or so to check temps wern't excessive and for rough stability. It ran like that for a week or so until I had time to properly tweak so dropped the multi to [16x] and raised the FSB to 250, again I let it fold a couple of A3 SMP units. The only time I used anything other than F@H for testing was when I began to whittle voltages down and that was 15-20 mins of Linpack for each step I knocked it down.

Im still not finished testing though I'm yet to find my max clock and absolute minimum vcore required for stability. I settled at 1.4125 at the time as I'm rather impatient and wanted the rig back folding.
 
thingemajib: An AMD® Phenom™ II X2 "unlocked" to an X4 and overclocked to 4GHz is great . . . looks like 11+ hours of Prime tested also . . . nice! :)

You mentioned "an old bios bug related to the cpu-nb multiplier has reared its ugly head again"? . . . what exactly is happening? . . . also that thing you mentioned about the images with the black lines? . . . I think that is a display issue at your end . . . I did some of my screenies as "interlaced" .gifs . . . not seen any black lines of any other computers like your screenie . . . just to test this I'll take the interlacing off the next stability screen to see if the black lines go away! :cool:
 
Ah right that explains it, it's actually a bad idea to run two different tests at once though, LinX is generally more stressful but with Prime stealing cycles from Linx prevents it from doing its job of stressing your cpu properly. :)
 
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yep, those latest pics are showing fine. Ill look into it...

enough on that for now. The cpu-nb multi will only raise above 10x, but not lower no matter what i set it to. I seem to recall the last time i had this, it was completely stuck on 10x I've 'reported' (complained) to foxconn before about this. Ive gone through so many bios revisions with many different fixes and many more things being broke i cant remember which revision i was using when. Never mind the face that the majority of official releases had core unlocking disabled for quite some time.

The problem with this is that my nb maxes out at 2550mhz (give or take), which means my ref clock cant go above 255mhz. Kinda tricky finding out what the max clock is when something else is holding it back. The whole point of the exercise was to find a) max stable clock of each component and b) max stable overall clock for 24/7 usage

oh, and i am lowering my HT multi before trying to lower the nb. The HT multi works fine.
 
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mmj_uk: My personal experiences of overclocking these chips goes against your theory of what is and what is not good stability testing protocol . . . case in point being that I can run LinX in isolation and it passes fine, I can also run Prime Small FFTs in isolation and it passes fine . . . however I found that if I launched Prime Small FFTs and left in running for an hour or two and then lobbed the same LinX test into the mix it would produce and error . . . a slight nudge up of vCore removed this error and I therefore feel happier running a combination of torture tests all at the same time for my personal peace of mind! . . . it's a completely OTT form of torture testing that I could not reproduce in actual Real-World usage but I prefere to be as thorough as possible and give the overclock a rigorous workload . . . once I'm done with stability testing I know the system is "Bomb-Proof" and I can get onto actually enjoying the machine! :cool: . . . check your trust email please

thingemajib: Ah I can't say I've heard about a bOrked CPU-NB multi before? :confused: . . . I can see how that is a pain although as you have a Black Edition chip I'm not sure that is a showstopper as you don't really need to adjust the HT ref.clock to send the chip into orbit? :D . . . I would have though 200MHz-250MHz Ht ref.clock would be ample for a nice blended overclock? . . . apart from that I wonder if this is something to do with the processor being unlocked? . . . does this CPU-NB problem still happen when the chip is locked? . . .
 
Not got a 'few hours spare' unfortunately, I work long hours and would rather be doing other things than reading though 2000+ posts. Can you or anyone else explain what C3 stepping is, and why it's good to have please.
 
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buchtis,

dozens of people combined have contributed hundreds of hours of their time in building up this thread with the aim of creating an excellent technical resource for everything to do with AMD® Phenom™ II . . . when you say you "would rather be doing other things than reading though 2000+ posts" this implies that your not that bothered about putting in a little effort yourself . . . but you then say you "feel inadequate" :D

It's generally considered good form to read a thread before asking a question that may have been covered many time already . . . if everyone didn’t read a thread and just asked a question then this thread would be twice the size because of redundant posts answering the same questions again, and again, and again . . . this would diminish the thread as a useful resource and make it harder to read for everyone . . .

If you had read the first page you would have come across the "Welcome" post #9 which lays down a few basic protocols for helping make this thread better . . . one of these points was to avoid using quotations where at all possible, this helps reduce the amount of unneeded text down making the thread easier to read . . . it also helps me identify which people didn't even read the first few posts and just blasted right in with the questions! ;) . . . please check your OcUK Trust email please . . .

Your time is no more important than anyone else’s who has contributed so far, when you say you "Can't be ***** to run Prime" it means anyone looking at your technical screenies has no way or knowing if your work is good and solid or flakey and unstable so its not "contributing" very much really . . . it's been a huge team effort all round and this thread will benefit those people who are prepared to put in the hours and get some solid learning under their belt! :)

In the spirit of friendly co-operation I would urge you to read the thread through once you have time . . . pick up your free gifts and also the know-how to get the best possible performance from your AMD® Phenom™ II . . . The [C3] revision is a slightly reworked [C2] piece of silicon that appears to run a little cooler and overclock a bit better . . . your got a nice chip there and I hope you can pick up the knowledge from everyone else’s hard work to get the best from it! :cool:
 
Thank you.

Will do some Prime when I get home tonight after work, how long should I run it for? Going out about 7-8ish but i'll be home by 5 hopefully.

Has anyone else got a X4 945 here clocked higher than mine?
 
Bought a Gelid Tranquillo cooler for my X4 B50 last week on This Week Only and have some before/after results (as both a X2 550 and a X4 B50) that I could post up if anyone is interested?

Uploaded the pics to imageshack but its a nightmare trying to navigate that site. Any better sites that allow you to upload more than 1 pic at a time?
 
@Borgia
Use photobucket.com > you have to sign up for an account but you can upload lots of files at the same time. Good looking cooler.

I got 3.4 gig of my B50 x4 with no voltage increase and the phenom 965 heatpipe cooler.
 
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