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post #1631 of 4289
Quote:
Originally Posted by valdin View Post
thlnk3r = tell me what you think if I will set NB to 2700 is it be a very big overclock for 24\\7 or not, and is it dangerous for CPU ?
Valdin, with a 2700NB you'll definitely have to raise the CPU-NB voltage. Can too much voltage for the NB damage the processor? Good question...it may and may not. I don't think this discussion has come yet. Raising the NB frequency speed probably wouldn't damage the processor though. Perhaps some other members can chime in about this.

Good luck
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post #1632 of 4289
I've ran some blend and large fft tests the last few days with my config and they were not stable. I really believe it is because of my processor stability. I decided to bump up the vcore from 1.4875 to 1.5. I'll need to run another overnight test.
thInk3r - I noticed you said you wouldn't go past 1.75v for a vcore voltage. Is that limited because of temperatures? I have really good temps even at 1.5v. With the ac off, and ambient room temp ~25C my max temp(under prime95 large fft load;both cores) is 43C. So is this ok if it is blend/large fft stable?

Side note: I tried to run memtest86 even though the timings weren't showing up correctly. I decided to run it for a short time at first while I was out, maybe 30 mins. I knew the last time I had a bad batch of memory, there were errors within 1 minute. Anyway, after I got back and loaded up a game to play(TF2), I could see the numbers and dos-style text of the memtest screen with the right brightness/colors in the background. It was like a burnt-in CRT look. By now, I don't see the text anymore, but I might not be looking under the right conditions...and I only ran for about 30 mins??? So I'm kind of afraid to run another overnight test for my memory. Anyone ever heard of this?
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post #1633 of 4289
Quote:
Originally Posted by slimslider View Post
thInk3r - I noticed you said you wouldn't go past 1.75v for a vcore voltage. Is that limited because of temperatures?
Slimslider, if you're on air I probably wouldn't go too much beyond 1.5volts. 1.75volts is quite extreme and probably not possible unless you have a cooling source such as DICE or TEC. The processor itself is advertised having a limit of 1.425 volts.

Quote:
Originally Posted by slimslider View Post
Anyway, after I got back and loaded up a game to play(TF2), I could see the numbers and dos-style text of the memtest screen with the right brightness/colors in the background. It was like a burnt-in CRT look. By now, I don't see the text anymore, but I might not be looking under the right conditions...and I only ran for about 30 mins??? So I'm kind of afraid to run another overnight test for my memory. Anyone ever heard of this?
Sounds like a really bad case of burn in. Did you run the test for approx. 30 minutes? If you decide to run the diagnostic tool again just turn off your 37" screen for the time being that way you avoid any type of burn in. For memtest86+ I typically prefer tests 5 and 8.

Good luck buddy
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post #1634 of 4289
Quote:
Originally Posted by HondaGuy View Post
Can you use AMD Overdrive? You know about the green circle, click on it makes red outer ring around green circle, puts it in CnQ mode also
Quote:
Originally Posted by Edgemeal View Post
Oh is that what that is for, would of never guessed!

After some more testing (and even using a fresh install of XP from a backup image), even with CnQ disabled with 4 cores if I move the video player around the desktop while it's playing it shows some dropped frames. So I went back to 2 cores and tried the same thing but with CnQ enabled and it didn't drop a single frame, moving the player window around even felt smoother.

So it seems even though every test I through at this thing passed there is just something not right after unlocking the extra cores. Maybe I'll play with the per core setting next week if I get bored, I gotta a long weekend to start and need to get outta here, thanks for the feedback!
After some more testing I found that if I set the CPU Affinity of Video Lan Player to just two cores (unlocked cores or others) it plays the 1080p file without dropping any frames, strange, maybe it just doesn't like 4 cores?

BTW, someone mentioned you can disable a core by using the Per Core setting and set one of the locked cores to 0%, I tried that just to see if I could run as a X3 and it didn't work, all 4 cores were still enabled.
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post #1635 of 4289
what is the highest cpu volts useable on air?

also what is best to run the NB at?
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post #1636 of 4289
Quote:
Originally Posted by Edgemeal View Post
After some more testing I found that if I set the CPU Affinity of Video Lan Player to just two cores (unlocked cores or others) it plays the 1080p file without dropping any frames, strange, maybe it just doesn't like 4 cores?

BTW, someone mentioned you can disable a core by using the Per Core setting and set one of the locked cores to 0%, I tried that just to see if I could run as a X3 and it didn't work, all 4 cores were still enabled.
Edgemeal, I'm not even sure if VLC supports multiple-cores. I think it depends on the type of codec (ie. H.264 ect). Last I checked VLC only ran on one core. Perhaps someone can elaborate for us.

In regards to your second question, make sure before making any changes that you reset the CMOS. I believe this was one of the suggestions from Bagpuss whom originally posted about this a few pages ago.

Quote:
Originally Posted by JMT668 View Post
what is the highest cpu volts useable on air?

also what is best to run the NB at?
JMT668, the highest I have seen is 1.5volts on air. Anything higher than that and I would recommend a different method of cooling.

For your "NB" are you referring to voltage or Frequency speed? For a NB Frequency over 2400Mhz I would recommend applying +.200 volts. The highest frequency that I have seen so far is in the range of 2700-2800Mhz.

Good luck
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post #1637 of 4289
Is there any way that power could be limiting my oc?
heres my reasoning.
when i start my oc'ing process, 1.25v for some miracle reason lasts me until i hit 3.4ghz. then i bump it up a little bit. for some reason, it seems like, after i hit 3.6ghz, i just have to start raising the volts more and more for just a 100mhz oc.
ex
1.3v - 3.5ghz stable
1.44v - 3.7ghz stable
that seems a major increase for just 200mhz
at 1.44v my core temps do go past 34*C
my therory is, is that with this chip using excessive 100 watts, my oc'ed 4890 using god knows how much, and the new addition of a physx card, is that i simply have run out of wattage on my corsair to oc any higher.
it seems that because of the power limitations, i have to give more juice to the cpu to overcompensate its power requirements.

back when i wasnt using the physx card, i remember i got 3.85ghz completely stable. i then got 3.9ghz to pass a few tests in prime, but then, in the middle of a game, i got a windows power warning thing and the comp shut off.

please share your opinions.
    
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post #1638 of 4289
Hi, may need a little help if possible.
I was running M2N32 SLi + Ath x2 5600+ brisbane @3300,2 GB Corsair Dominator 8500@ 1066MHz.
Swapped out this today (started @ 2.00pm & just finished)for M4N82 + Phenom II 550.
Straight into Bios, turned NVCC on AUTO,rebooted & 4 cores enabled :-) & working @ 3100.
Got my ram running @ 1066MHz and clocked 550 upto 3700 so far (2 cores & with 4 cores) seems stable so far.

Anyone know how to adjust the fsb on this board, i selct it in the bios,press enter but it does not allow me to change it from 200 ??? something else in the bios other than Manual setting needed to be selected first ??

Best settings all round inc voltage to hit 4GHz,bit cheeky asking but bios for these chips/board are a lot more involved than my old M2N32.

All answers much appreciated thanks.
Edited by ewan - 9/9/09 at 1:39pm
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post #1639 of 4289
Quote:
Originally Posted by Contagion View Post
my theory is, is that with this chip using excessive 100 watts, my oc'ed 4890 using god knows how much, and the new addition of a physx card, is that i simply have run out of wattage on my corsair to oc any higher.
it seems that because of the power limitations, i have to give more juice to the cpu to overcompensate its power requirements.

back when i wasnt using the physx card, i remember i got 3.85ghz completely stable. i then got 3.9ghz to pass a few tests in prime, but then, in the middle of a game, i got a windows power warning thing and the comp shut off.
Contagion, you are probably using max 350 watts at full load. The power supply you have now is more than enough for all of your components. I remember with my dual-core Opteron 170 and 4850 I was pulling 207-218 watts during testing. All though I have ran into some issues on OCN where users did upgrade their power supply and were able to get a higher overclock. For testing purposes did you try removing the Phsyx card to see if that makes a difference?

Quote:
Originally Posted by ewan View Post
Anyone know how to adjust the fsb on this board, i selct it in the bios,press enter but it does not allow me to change it from 200 ??? something else in the bios other than Manual setting needed to be selected first ??
Ewan, this setting should be located in AI Tweaker Menu->AI Overclocking->"FSB Frequency". The frequency ranges from 200 to 600Mhz. This information is located in your manual on page 3-12.

Let us know if that works

Good luck
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post #1640 of 4289
Quote:
Originally Posted by thlnk3r View Post
Edgemeal, I'm not even sure if VLC supports multiple-cores. I think it depends on the type of codec (ie. H.264 ect). Last I checked VLC only ran on one core. Perhaps someone can elaborate for us.
If I force VLC to use just one core then it can't keep up, tried it on my older 2.2GHz X2 s939 and acts the same way, so maybe it is multi-threaded or it has something to do with my video card?... I don't have a clue when it comes to this video stuff, don't even play 1080p files (mostly 720p and lower) , just testing everything I can throw at this PC with the cores unlocked.

Quote:
In regards to your second question, make sure before making any changes that you reset the CMOS. I believe this was one of the suggestions from Bagpuss whom originally posted about this a few pages ago.
Didn't reset CMOS, forgot about that.
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