Phenom II 945 Overclocking

rumble291

rumble291

rumble291

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Hey guys,

I've been trying to OC my 945 (95W) with not much luck. I followed the guide and looked all over the web on how to do it etc.

When I increase the FSB by 5 its stable ran OCCT for around 15 mins where as when I try to increase the FSB again by 5 to 210Mhz it fails and BSODs occur.

My sys specs are:

AMD Phenom II X4 945 (95W)
Asus M4A79XTD EVO
4GB Crucial Ballistix DDR-1333 (6-6-6-20) in dual channel
600W Coolermaster Silent M Pro

Cheers guys,

Kurt
 
Do you have Black Edition or not?

The sticky guide is not really geared towards black edition processors.

If you do have BE then begin by raising the cpu multiplier in BIOS. You should be able to raise it to 17 or so without changing any other options. Then use prime95 blend test to check for stability.

Keep an eye on the temps if you are using a stock cooler. You do not want the overall temp hitting the 60s.

Once you get going post your results here. There are loads of people who will give you advice on the next step.

Make sure to read through the thread to get an idea of what people are doing. Good luck. :D

EDIT: Also have a look at this. It is for people OCing phenoms using AMD overdrive software but even if you would rather use BIOS it is still useful as it gives you an idea of what the different settings actually mean.
 
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Thanks for the reply! That guide helped a lot. Nah I only have a standard one cause i managed to get it for 100 quid on another competitor. Running OCCT at 3.2Ghz atm just did a 7 hour stress test with the FSB at 210 :) volts are 1.325 V-Core and 1.225 for NB.

I Disabled all the CPU options in BIOS such as microcode validation and stuff.

What should I do about the HT link speed? Another thing is I dont have an option for multiplyer on NB shall I just keep uping the volts everytime i hit a wall with the CPU?

Cheers,

Kurt
 
1.325 vcore for stock is very nice and low so you should have plenty of overclocking headroom. I would not go above 1.5 (the max stated safe voltage) but some people do.

Yes I think just keep increasing the clock speed in small increments. And do lots of stress testing to check for stability. Remember that increasing the clock speed will increase the nb and the ram clocks as well so you will need to keep an eye out that the ram being clocked too high is not causing any errors you get.

Post your cpu-z shots on the thread I posted above. There are a few people on there with non-BE phenoms who may be able to help more. I know for certain that one of them has managed a 3.8GHz clock.
 
Ok so Ive got to 3.2Ghz:

Vcore: 1.4250
DRam: 1.76 (running at 716Mhz)
CPU/NB: 1.300
NB: 1.22
HT link: 1.26

I keep getting core errors on OCCT! I've upped the voltages to the above and it still does the same!

My temps are looking bad though 58c under full load need a new CPU cooler! Would this affect the errors?

Cheers
 
Perhaps. I think these chips tend to clock better at lower temps. 58 is pretty high, I try to keep mine below 55.

People in the phenom OCing thread will know what to try next.
 
for such a low overclock it seems ur voltages are a bit high, like previously said,u should be able to get 3.4ghz just on the multiplier,without upping voltages,u also should hav a NB multi,or just up the NB to about 2.2ghz, making sure HT is set lower, dont forget if u up the FSB, NB,HT and Ram go up as well!
 
Try backing down the vcore to 1.35V or 1.375V

You would really benefit from an aftermarket cooler.
 
I'm running the same chip on a AM2+ board at 3.6ghz at stock volts without any issues using a AC64 for cooling.

I have set the HT link at just under 2000 and memory (PC6400) at 395mhz so everything else is running around stock speeds.

The temps are roughly 28c idle, 45c full load

You should definitely look at an after market cooler as it will help a lot
 
I think I'm gonna give up. I've tryed lowering the volts upping the volts, lowering the multiplyers for NB and RAM. It just wont get past the core errors. Probably what I get for buying an AMD chip lol. Cheers for the help guys.
 
Hey guys, I found out that the RAM timings with the overclocked speed were giving me the "Error detected on Core.." on OCCT, relaxed them a bit and tested stable for an hour at 3.3Ghz pushed it up to 3.4Ghz with a problems with the HT link and NB speed so reduced them down to just above normal and hopefully by 2nite i'll have it stable at 3.4Ghz until I get a better cooler!

Any suggestions cooling wise? I was thinking maybe water cooling as it would be cool as a project to do. Or should I just stick with Air Cooling?

Cheers guys,

Kurt
 
Good luck on which ever decision u make!
i personally would persivere trying 2 get the best out of wot u got.
u can pick up a decent air cooler for less than 40quid and get somewhere near 4ghz, it really is worth the effort. get more info off this and similar forums about AMD O/C ing
 
Yeh i've learnt a lot the past few days. I'm pretty sure the Temps are to blame! I read on the forum that if you increase both NB and CPU speed you get higher temps so I only upped the CPU speed and I managed to get stable 3.4Ghz until I closed the window in my room which caused the temps to go up.

Im looking at water cooling. Been researching that before probably buy a custom water loop for the CPU for around £137.
 
rumble291 said:
I'm looking at water cooling. Been researching that before probably buy a custom water loop for the CPU for around £137.
Click to expand...

Don't go too overboard on the cooling unless you really deem it necessary.

A £20 AC64 does a good job of cooling my 945 but I'm now looking at getting one of these bad boys lol

http://www.overclockers.co.uk/showproduct.php?prodid=HS-008-TI

I've heard very good things about them so it could be worth a try and its under £30! :D
 
I'll have a look at CPU coolers, That one does look pretty good! Thanks for the suggestion.

I was thinking about water cooling because its quieter and a bit of a challenge to do :)

Is there any really silent but good performing CPU coolers? also a silent case fan? I've already got an Xilence one but there out of stock on overclockers!

Cheers, Kurt
 
maybe your going up the mhz to fast. my athlon IIx4 seemed to enjoy a bedding in period over a couple of weeks really. dont understand why - probably more of my own small errors in overclocking. now running seti 24/7 at 3.4ghz all air cooled and only 46c on lowest fan setting!:cool: under full load as i write this.

i would get a good air cooler and spend the money saved on something else,:eek: unless of course your set on watercooling:D.

cpu cooler im using zalmon cnps9500, all in at around £25
case - cheap shinobi, 1x120 front fan, 1 sycthe 120 rear & corsair psu fan.
 
I've got it stable at 3.4Ghz aswell now! Which is nice :) Ive been playing bad company 2 and running my PC like it for a couple of days so i think its stable :) as soon as it hits 58c under full load it causes unstability and BSODs.

Is there any other suggestions for coolers?

I've gotta tidy my fans up aswell replace the front fan and put a dust filter on it. Im looking for pretty dam quiet fans though, so theres not a lot of noise and only coming for the HDDs.

Cheers guys,

Kurt
 
I dont think you need to go even as high end as the fenrir for a dual core.

I think the cooler master tx3 @£13 will keep you easily under 58C. I ran it on my phenom II x3 @ 3.8GHz and load temp was 48. On full blast it is not very quiet though. Depends if you are actually going to be doing anything at full load for long periods eg encoding while you sleep...

If you got some thing like the thermolab baram or maybe the fenrir you might be able to run them without a fan at all (depending on case air flow). That would be quieter than water cooling.
 
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Ive got the sunbeam CPU cooler i think it cost 30 quid its great got my cpu upto 3.2 from 2.8 temps are 28c idle load around 35 - 40c never new that about the Black Edition eddyc have to have ago at overclocking again.
 
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