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AMD® Phenom™ II Overclocking Thread

Ok, so I increased to x18 (3.6ghz) and increased volts to 1.4v. No post, nothing onscreen. I had to remove my graphics card to get to the cmos jumper pins next to the battery and reset bios with a 2 pin jumper plug from an old hard drive. It fortunately loaded my last best config which is at x17. Then I tried again at x18 and upped the voltage to 1.45, skipping the in between voltage of 1.425, and again, no post, had to clear cmos again.

I don't get it. Why won't it post?


*Edit: The problem doesn't seem to be the vcore, but it seems to lie in going from auto to manual on system voltage control. In this screenshot, you can see where I changed system voltage control to manual, and everything below it from DRAM voltage control to CPU voltage control now says 'normal' instead of auto. All those voltages next to them I didn't alter (except vcore), that's how they are.
CPU_vcore4.jpg


I just tested setting it to manual and leaving vcore at stock voltage
CPU_vcore8.jpg


and it STILL didn't post, which means that all those other settings now on manual are affecting the post. So how do I get around that? I need to keep those other settings on auto while increasing the vcore manually, but there's no option to do that once I change system voltage control to manual.
 
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PhoenixUK said:
Try leaving the multi at 17 and increase the FSB instead to lets say 215 and see if it boots, if it does then go up slowly from there : ).
Click to expand...

He will still need to up the cpu voltage nomatter what, cos 3.65ghz will be way to high for stock volts.

Basically if he changes the "system voltage control" to manual to up the cpu voltage, 1 or more of the manual settings changes. This makes it have a bennie and he is forced to clear the cmos. So do all the manual figures look correct?
 
I solved the problem with my bios. :) I disabled the evil EPP and the pc posted with system voltage set to manual.

http://j.imagehost.org/0783/Evil_EPP_disabled.jpg

EPP was putting my ram on auto while system voltage control was putting DRAM on manual and must have been conflicting. Now I can continue overclocking via the bios and start increasing vcore. EPP was set to 4-4-4-12, and voltage was 2.120v. As you can see in the screenshot above, voltage has gone down to 1.920v so my ram timings are back to default.

I then had a brainwave of how to get my EPP timings back manually, the easiest way. I enabled EPP again, went to DRAM settings and it showed all the settings EPP uses, 4-4-4-12 plus a bunch of other timings. I then disabled EPP again, looked at DRAM settings again, and it still kept the EPP settings. Then I went to DRAM voltage and increased it to 2.120v as that's what EPP voltage was. Rebooted, and it's fine, and at 4-4-4-12 again. Brilliant. Now I'm at x18 3.6Ghz, increased vcore to 1.4v (as it failed at stock voltage after an hour of orthos) and it's stable as I tested it overnight already. So now I'm going for 3.7Ghz. Don't know yet if it'll need more voltage.
I'm quite happy with all this.
 
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Is it normal on the 955 BE that anything over 3.6ghz disables the cool & quite.? I can run lovely and stable at 4ghz with low temps but cool & quite does not function no matter what i set in the bios. If i set the chip to run at 3.6ghz it works perfect..at 3.8 no cool and quite ??

Anyone clued up on this

Cheers
 
Elfmeister. said:
At what settings do you get this then? also what cooling are you using?
Click to expand...

Only settings i have changed is 20x200 in the bios and 1.45v v-core everything else is as default..

Max temp according to CPUID is TMPIN0 = 41.c TMPIN2 = 34.2.c

I,m using a thermolab Barum cooler with 2 x 120 akasa PWM fans in a push pull...

Any ideas on the cool & quite ?
 
Question guys. Running the 965 BE with 1.475V at 3.7GHZ. Using AMD Overdrive Advanced Mode to clock. Idle temps seem to hang around 41 Celsius. Does all seem right? How much further can I go on 1.475V ? Under load it doesn't seem to go above 45 Celsius
 
MOOGLEYS said:
Any ideas on the cool & quite ?
Click to expand...

Im sure I read somewhere that above 18* c&q doesnt work any more which would explain why there are no 975 chips out or planned.

regulus said:
Question guys. Running the 965 BE with 1.475V at 3.7GHZ. Using AMD Overdrive Advanced Mode to clock. Idle temps seem to hang around 41 Celsius. Does all seem right? How much further can I go on 1.475V ? Under load it doesn't seem to go above 45 Celsius
Click to expand...

The temps fine so just keep pushing the multi up. Every chip reacts diffferently so you wont know until you try. Just go 3.75 and test it and then 3.8 and test etc until it falls over.
 
Fell over at 3.8ghz (1.475). Hesitant to push the volts up more as AMD only recommend the late 60's Celsius temps under load. I'll get too close. Will probably get the H50 CPU cooler first.
 
regulus said:
Fell over at 3.8ghz (1.475). Hesitant to push the volts up more as AMD only recommend the late 60's Celsius temps under load. I'll get too close. Will probably get the H50 CPU cooler first.
Click to expand...

I had a H50 for a day and sold it. Gave me worse temps than the stock Phenom II cooler...

Get a decent tower cooler with a couple of fans, you will get better results. My 955 does 4.0ghz and only 41.c...
 
MOOGLEYS said:
I had a H50 for a day and sold it. Gave me worse temps than the stock Phenom II cooler...

Get a decent tower cooler with a couple of fans, you will get better results. My 955 does 4.0ghz and only 41.c...
Click to expand...

I have the CM HAF 22 with the Arctic Cooling Freezer 7. Will I see much lower temps switching to the Baram?
 
regulus said:
I have the CM HAF 22 with the Arctic Cooling Freezer 7. Will I see much lower temps switching to the Baram?
Click to expand...

Deffinately the Barum is a much better cooler than the freezer 7 but Its twice the price and does not come with fans so its worth bearing that in mind.. Is it worth spending out to gain a couple of hundred mghz,s which you would not notice in games anyway.....
 
MOOGLEYS said:
I had a H50 for a day and sold it. Gave me worse temps than the stock Phenom II cooler...
Click to expand...

Without a doubt, you're doing it wrong. (Unless it was borked).



Guys of the Phenom II overclocking thread. I return. I used to run my 965BE at 3.8ghz just overclocked on the multi, but now I have a far better motherboard, and I'm wondering what tends to yield the best overclocking results, 200fsb and just upping the multi or a combination of the two?

It's a C2 stepping by the way so I'm not that confident of 4ghz.

I gave up on my old Asus motherboard because the vdroop was so bad that when set to 1.55 vcore, it would often drop under 1.50 vcore. I didn't have that LLC thing on that board either. (I think it was called LLC, helps minimalise vdroop?). Anyway, I gave up and set it all back to stock. Now though, I have a new board, which is a Gigabyte 890GPA-UD3H, which is supposedly a proven overclocker.

So then, any hints or tricks for me for overclocking on this board? Locking the PCI etc?

I have 1600mhz ram by the way, and I'm not all that fussed about getting it there, I could tell no difference between 1333 and 1600mhz on my old board anyway.
 
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