Phenom II 945 OC

[McLovin]

So I am pretty much a noob when it comes to OC'ing CPUs. I have only OC'd one time and that was on my old x2 555 (unlocked to a Tri-Core (x3)) and just raised the CPU multiplier.

Now I guess I've "upgraded" to a 945 and wanted to see if I could get it to run as fast as the 555 (OC'd) Clock speed-wise and overall speed of the system.

I've read Dolk's OC guide on overclockers.com and felt I had a decent enough information in front of my to attempt my first true OC.

Long story short, I am sitting at 3.6GHz, NB and HT Link at 2160MHz, and DRAM Freq. of 800MHz.

SS shows current temps at idle, as well as max load while running Prime95 well over 12 hours.

From what I've read, this should be a decent OC, but to be honest I think something is not right here. I did a 3DMark06 pass through and I scored 1800 Points less then my 555 setup.
Granted, I didn't have as good of cooling with the Unlocked, OC'd 555, but should it really be less?

I'm really hoping someone here with more knowledge in the OC realm can help point out what I am missing here.

Oh, I did raise the NB voltage to 1.18V.

Edit- Sorry for the crappy looking picture, I'm running at a resolution of 1680x1050.

 

[DrMrLordX]

It would help if we knew what speed you ran the x2 555 at unlocked.

 

[McLovin]

It would help if we knew what speed you ran the x2 555 at unlocked.

Yeah sorry, it ran at 3.8 GHz with just the Multi increased.

 

[Rifter]

hmm that is wierd, maybe try and get it to 3.8Ghz as well and then run the benchs.

it seems strange though that the new system with only a 200Mhz clock diff is doing worse.

What was the HT link and NB speeds of the 555 system?

 

[McLovin]

Whatever the stock HT Link and NB speeds are for that CPU. Like I said, all I did was a small voltage bump and cpu multi increase.

 

[Rifter]

3dm06 is old, it is possible its not well threaded and then the higher clocked tri core comes out ahead since its not using all cores anyways so your 4th core makes no differnce to that program.

 

[DrMrLordX]

Agree with Rifterut. I don't know my 3d mark scores that well, but losing 1800 points is a bit drastic from just 200 mhz of clock speed. I wonder, if it isn't spawning 4+ threads, that maybe you're having a scheduler issue? Maybe if you set some core affinities for the app before you run the benchmark?

 

[McLovin]

Ok so then my question becomes then, does my OC appear to be a good OC? I've read that NB and HT Link need to be the same speeds, going over 2200MHz is too much, 1800MHz is better, 1800MHz bottlenecks the CPU, yada yada.

So totally ruling out 3DMark here, is this really a good OC?

 

[heyheybooboo]

Drop the HT to something like 1600-1800MHz.

Shoot the Moon with the NB/IMC. The 10x multi should be a slam-dunk. 11x will require 1.2v+ but give you an even nicer boost in increased memory bandwidth and reduced latency.

12x240 NB/IMC will get you an *uber-Enthusiast* Gold Star :biggrin:




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[McLovin]

Oddly enough, my mobo will only let me select a multi of 10 for the NB. Any increase is only seen with basically an FSB boost.

Right now with a an FSB of 247, NB Voltage bump to 1.2, I raised the NB multi to 10 and I am sitting at 2471 MHz NB Freq. I lowered the HT Link multi and thats sitting at 1729 MHz.
CPU Clock is at 3705MHz.

Prime 95 has been running for about 15 mins and so far so good.

I will take a SS after a little while longer to show final results.

 

[heyheybooboo]

At the main BIOS screen ... hit <Ctrl> + <F1>

Enjoy expanded options.


edit: That Phenom 945 OC is looking good!




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