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AMD 7750/7850 B.E Club! - Page 47

post #461 of 587
Quote:
Originally Posted by Mithral View Post
Same here.

In my case I can get 3.2Ghz to load into Windows but isn't stable very long. no matter what I do. I can get 3.1Ghz to run Windows stable with higher voltages. However, if I push the CPU with a heavy game I have to drop down to 3.0 Ghz to maintain long-term game stability.

I just got a 550BE and tried with similar pattern. I can get it to load up to 3.98 Ghz but won't stablize with Windows. 3.9 will load but won't stablize with gaming. But 3.8 runs fine.

I don't know what I'm doing wrong with either chip that keeps me from stabilizing the extra 100 or 200 Mhz of either chip.

I tried a number of combinations of volts, underclocked RAM, HTlink settings. Even different BIOS versions.

So.. yeah, you should be able to bet the 7750 to boot bios and into windows at 3.2 Ghz. But stability above 3.0 Ghrz seems to be the challenge. Reaching above 3.2 with the 7750 is really pushing the envelope.
I'm at 3.2GHz at 1.4v, and I upped my NB speed to 2.2GHz, and the voltage to 1.3? (I think it's 1.2 stock), and it's been holding at 3.2GHz while gaming and stressing. I'm hoping I can find an alternative to ACC (since my motherboard doesn't suppose it) to break 3.3GHz.

Disabling C1E also helps with stability, so it seems.
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post #462 of 587
Double post. What's the max safe voltage for the 780G northbridge?
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post #463 of 587
Quote:
Originally Posted by Zeifer View Post
And there's nothing I can do about that?

The Kuma was a good CPU to buy for like 2 months last year before Phenom II broke out. It has been overshadowed by the Athlon II X2 which can get much better overclocks and it about the same price even though its not a Black Edition.

Best bet in all honesty is to sell that CPU and get you a 240 X2 and play with that.
    
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post #464 of 587
Quote:
Originally Posted by Zeifer View Post
Double post. What's the max safe voltage for the 780G northbridge?
I forget, but adding a fan on the NB helps keep temps down/stability up if your overvolting and trying to get the Kuma to like 3.5-3.6(which is dang hard on any chipset)
    
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post #465 of 587
ur mobo is almost like myne and myne is a paine the nb runs hot s hell at stock volts
i got myne to 3.4 it loaded xp then crapt out one thing i did was toy with settings in the asus overdrive utility and then ran that in bios i was abol to try a buncha seting and see waht workt and what dint and dint have to restart my computer evrytime
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post #466 of 587
Managed to get mine upto 3.1Ghz and upped my vcore a little will try for 3.2 later tonight.
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post #467 of 587
Quote:
Originally Posted by dlee7283 View Post
The Kuma was a good CPU to buy for like 2 months last year before Phenom II broke out. It has been overshadowed by the Athlon II X2 which can get much better overclocks and it about the same price even though its not a Black Edition.

Best bet in all honesty is to sell that CPU and get you a 240 X2 and play with that.
I plan to, I'm just screwing around with this chip (which was purchased before Phenom II), until I buy a new mobo and snag an Athlon II X3 or X4.

Quote:
Originally Posted by dlee7283 View Post
I forget, but adding a fan on the NB helps keep temps down/stability up if your overvolting and trying to get the Kuma to like 3.5-3.6(which is dang hard on any chipset)
Problem is my PSU is so on the verge of being unable to supply power to my PC, if I run more than one case fan my PC will lock up. It's like a 5 year old Antec, so.


Couldn't hold 3.2GHz while gaming because my PSU is dying and the CPU/Mobo/HDD/GPU stress on it with the overclock was too much. Dropped it to 3.1 and it's perfectly stable. I just ordered a ULTRA X4 1050w, because overkill is where it's at.
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post #468 of 587
Nice choice with CPU and PSU....getting my 550BE this week with a ASUS mobo.
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post #469 of 587
Quote:
Originally Posted by Glyphor View Post
Nice choice with CPU and PSU....getting my 550BE this week with a ASUS mobo.
I'm planning to get my Gigabyte and Athlon II before Christmas...because I wouldn't be able to sleep at all Christmas Eve, which means no enjoying my new toys.
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post #470 of 587
3.66Ghz

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