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How far can Denebs go? - Page 2

post #11 of 22
If you're going for 100% stability, with a C3 chip you're likely to end up somewhere between 4.0 and 4.2GHz. My 965 was rock solid at 4.4GHz on three of the four cores. One wouldn't do it so I lowered it to 4.3GHz for 24/7.

If you're just playing around to see what you can do, you'll likely see 4.5GHz+, though it won't be very stable. I could boot at 4.6GHz on air and it would BSOD at 4.7GHz when I was in Windows.

On LN2 that chip did 6.63GHz. Link to this adventure in my sig.
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post #12 of 22
Thread Starter 
Is it normal that at 2.8ghz CPU-NB @ 1.35v, is unstable? Cinebench crashes :/. For that frequency is the voltage known to be higher?
post #13 of 22
Thats a pretty high NB speed. Dunno if it's too high, but thats definitely moving.
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post #14 of 22
Thread Starter 
Quote:
Originally Posted by ramkatral View Post

Thats a pretty high NB speed. Dunno if it's too high, but thats definitely moving.

I guess it was too high for my chip. I wanted to hit 2.8ghz under 1.4v but couldn't, so I've settled for 2.6ghz, and it's stable so far at 1.3v. So I'll be content with 4ghz and 2.6ghz CPU NB.
post #15 of 22
That's a pretty damn quick setup on a Phenom, bro. Be happy with it thumb.gif
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post #16 of 22
Yea the 965BE does not like anything more then CPU/NB @ 2700 if you lower the Multi and increase FSB you can raise up the CPU/NB a bit more, and still reach the 4.0Ghz. I've tried for weeks to get 2800 CPU/NB to boot, and I went as far as 1.5v and had zero luck even getting the system to load.

4.0Ghz was pretty much the max for me as well. I was able to achieve 4.1ghz but the boost in volts made me reconsider for my 24/7 setup. I can keep temps low and stable at 1.45v but in order to achieve the 4.1Ghz range I needed to increase volts to 1.54. As you can see that's a pretty large voltage increase for a fairly small gain.
post #17 of 22
Quote:
Originally Posted by venomblade View Post

I guess it was too high for my chip. I wanted to hit 2.8ghz under 1.4v but couldn't, so I've settled for 2.6ghz, and it's stable so far at 1.3v. So I'll be content with 4ghz and 2.6ghz CPU NB.

My 965 is currently running NB at 2600 with only 1.175v and going down one notch per day (til I find it's minimum.) Try lowering it s'more.
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post #18 of 22
Thread Starter 
Quote:
Originally Posted by pursuinginsanity View Post

My 965 is currently running NB at 2600 with only 1.175v and going down one notch per day (til I find it's minimum.) Try lowering it s'more.

Ah thanks I will try that. I think I was under the imperssion that I needed it that high because when I first started OC'in, my CPU wasn't completely stable, but at the time I thought the culprit was the CPU NB so I jacked up the volts for that lol.
post #19 of 22
Quote:
Originally Posted by venomblade View Post

Ah thanks I will try that. I think I was under the imperssion that I needed it that high because when I first started OC'in, my CPU wasn't completely stable, but at the time I thought the culprit was the CPU NB so I jacked up the volts for that lol.

Well, this is the only AMD CPU I've owned and overclocked, so take my advice with a heaping tablespoon of salt. tongue.gif It just seemed quite high for a 2600NB to me. I started at 2400 with 1.25v and then moved to 26, then started lowering voltage.
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post #20 of 22
Depends really. Mine requires 1.35v But I'm also running my CPU/NB at 2730 right now. As I changed my multi to X19 and raised FSB to 210 for a 4.0Ghz.
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