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Old 08-18-09   #1041 (permalink)
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Im having fun undervolting my 550 now.......now i've got the Quad Core freebie out of my system and discovering absolutely NONE of the games and Apps i have actually need 4 cores, i switched back to dual core mode and i am running it at 1.175 vlts 2.5Ghz....

And in the only games i play, Battlefield 2 and some Steam Source games, i still get 100fps+!!!!

For now i'll take the saving on my electricity bill, and as and when i need more CPU power, i'll ramp up the volts/Ghz/cores....
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Old 08-18-09   #1042 (permalink)
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Still playing Battlefield 2 myself.....

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Old 08-18-09   #1043 (permalink)
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Quote:
Originally Posted by Bagpuss View Post
Im having fun undervolting my 550 now.......now i've got the Quad Core freebie out of my system and discovering absolutely NONE of the games and Apps i have actually need 4 cores, i switched back to dual core mode and i am running it at 1.175 vlts 2.5Ghz....

And in the only games i play, Battlefield 2 and some Steam Source games, i still get 100fps+!!!!

For now i'll take the saving on my electricity bill, and as and when i need more CPU power, i'll ramp up the volts/Ghz/cores....
That was what I did lol. Ran 4 cores and then realized I didn't really need them.
Instead of underclocking/undervolting so much, why don't you try PhenomMSRTweaker? It is a great program that is like custom cool n quiet so you can have very high performance under load and cut back on the electricity bill while using less intense apps.
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Old 08-18-09   #1044 (permalink)
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Quote:
Originally Posted by Brutuz View Post
Iirc, the Phenom II x4 920 and 940 had the old Phenom IMC from the athlon64, the x2 and x3, x4 9x5 series' had the new one that has DDR3 as well, but the newest 965 has an entirely new NB or something in the CPU.
Brutuz, the IMC is different even with the cores being the same (Deneb)? That's definitely interesting. Do you have a link to the documentation that explains this? I wouldn't mind reading up on it.

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Could it be that this is a max for my processor? I've also read that 64 bit could be holding me back?
Ocfanboy, that is a possibility. 3.9Ghz is definitely something to not be ashamed about. It seems like the max speed for these processor is in the range of 3.8-4Ghz.

I've read a few links there and now about Vista vs XP overclocking. I don't think there is really any definitive answer when it comes to both operating systems. Have you tried testing with a different OS to see if that yields a higher OC?

Good luck
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Old 08-18-09   #1045 (permalink)
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finally got to 3.7Ghz!!!

here's the validate link.

1.4v

I've found that using amd overdrive seems to be more stable for me for some reason.

http://valid.canardpc.com/show_oc.php?id=661736

even though cpu-z is reporting 1.376 as core volt its really 1.4

ran a stability test for 10 minutes to see the temps on this speed and it got up to 44C which is kinda interesting, right now im idling at 28C which isnt too bad.
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Old 08-18-09   #1046 (permalink)
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Quote:
Originally Posted by Tonicblazer View Post
ran a stability test for 10 minutes to see the temps on this speed and it got up to 44C which is kinda interesting, right now im idling at 28C which isnt too bad.
Tonicblazer, very nicely done. Those temperatures are comparable to an older Socket 939 single core

Good luck
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Quote:
Originally Posted by txtmstrjoe View Post
"Steppings merely indicate possible outcomes due to the law of averages being in your favor."

System: Messier 33
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AMD Opteron 146 @ 2.6Ghz 1.41volts CAB2E (Lapped)
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Old 08-18-09   #1047 (permalink)
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Quote:
Originally Posted by thlnk3r View Post
Tonicblazer, very nicely done. Those temperatures are comparable to an older Socket 939 single core

Good luck
thanks im gonna try to see what i can get tomorrow when i have more time to mess with it, kinda interesting to see how far the cpu can go with just a little voltage increase.
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Old 08-18-09   #1048 (permalink)
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Quote:
Originally Posted by thlnk3r View Post
Brutuz, the IMC is different even with the cores being the same (Deneb)? That's definitely interesting. Do you have a link to the documentation that explains this? I wouldn't mind reading up on it.
I can't remember where I heard it, it was one of the reviews posted here though.
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Old 08-19-09   #1049 (permalink)
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Quote:
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I can't remember where I heard it, it was one of the reviews posted here though.
Brutuz, ahh ok. I'll google and search around OCN to see if I come up with anything. This is interesting though. I'll post up if I find something
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Quote:
Originally Posted by txtmstrjoe View Post
"Steppings merely indicate possible outcomes due to the law of averages being in your favor."

System: Messier 33
CPU
AMD Opteron 146 @ 2.6Ghz 1.41volts CAB2E (Lapped)
Motherboard
Gigabyte GA-K8N SLI-Pro
Memory
GSkill F1-3200PHU2-2GBNS 2x1GB 217Mhz 2.5-3-3-6 2T
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Old 08-19-09   #1050 (permalink)
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Quote:
Originally Posted by Bagpuss View Post
Im having fun undervolting my 550 now.......now i've got the Quad Core freebie out of my system and discovering absolutely NONE of the games and Apps i have actually need 4 cores, i switched back to dual core mode and i am running it at 1.175 vlts 2.5Ghz....

And in the only games i play, Battlefield 2 and some Steam Source games, i still get 100fps+!!!!

For now i'll take the saving on my electricity bill, and as and when i need more CPU power, i'll ramp up the volts/Ghz/cores....
That is funny u say that.... that is what i did.... 4 cores....ok... did that... i did try undervolting but i kept it at 3.2ghz when i did.... may have to revist that again....
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