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Phenom II 945 rediculous overclock?

post #1 of 12
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So I'm saving up for some upgrades on my computer, and until then I have some 16GBs of 1333MH and a Phenom II 450. I also have a pretty beast cooling system for the moment. Anyways, I had it at stock clock speed (3GHz) because up until the past year I haven't had any issues with it, but as of late it's began to show it's limitations. I decided "well I have good cooling, and a really powerful motherboard so why don't I put this thing to through it's paces"

I currently have the CPU OCed to 4.2GHz, and the R.A.M. at roughly 1500MHz

I'm still getting temp readouts at about 1 or 2 degrees above ambient when I stress test it, but I can't seem to bring the clock speed any higher without stability issues.

Just curious as to whether this is a fairly decent clock rate for this semi-dated CPU

Edit: I MEANT TO TYPE PHENOM II 945, MY BAD
Edited by ZytheEKS - 3/25/13 at 1:05am
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post #2 of 12
Quote:
Originally Posted by ZytheEKS View Post

So I'm saving up for some upgrades on my computer, and until then I have some 16GBs of 1333MH and a Phenom II 450. I also have a pretty beast cooling system for the moment. Anyways, I had it at stock clock speed (3GHz) because up until the past year I haven't had any issues with it, but as of late it's began to show it's limitations. I decided "well I have good cooling, and a really powerful motherboard so why don't I put this thing to through it's paces"

I currently have the CPU OCed to 4.2GHz, and the R.A.M. at roughly 1500MHz

I'm still getting temp readouts at about 1 or 2 degrees above ambient when I stress test it, but I can't seem to bring the clock speed any higher without stability issues.

Just curious as to whether this is a fairly decent clock rate for this semi-dated CPU


Do you mean Athlon II 450? It is common to get a Denab core with a core locked and no L3 cache. 4.2GHz is pretty standard for a C3 revision Denab/Thuban.
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post #3 of 12
What is your cooling? Your getting 1-2 degrees above ambient when stress testing?
post #4 of 12
Thread Starter 
My bad, I got the AMD Phenom II x4 945 XD

And I have the Blackice 360 Stealth 60CFM, 120mm or something static pressure, and the Phobya Xteme 480 with 4 30CFM fans, the Apogee II with a modified top to take a 90CFM 80mm fan (the fan is mainly for looks :3
Edited by ZytheEKS - 3/25/13 at 1:07am
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post #5 of 12
Thread Starter 
Quote:
Originally Posted by Redwoodz View Post

Do you mean Athlon II 450? It is common to get a Denab core with a core locked and no L3 cache. 4.2GHz is pretty standard for a C3 revision Denab/Thuban.

If that's a standard OC, is it difficult to get much higher? I can't seem to go past 4.35GHz without starting to have crashing issues.
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post #6 of 12
It's just going to be based on the chip. My 965 wouldn't go above 4.0. Your temp readouts are not correct though if they are showing 1-2 above ambient when running Prime or some other stress testing utility. What are you using to pull temps?
post #7 of 12
Thread Starter 
Quote:
Originally Posted by blkdoutgsxr View Post

It's just going to be based on the chip. My 965 wouldn't go above 4.0. Your temp readouts are not correct though if they are showing 1-2 above ambient when running Prime or some other stress testing utility. What are you using to pull temps?


I'm using CoreTemp to get the temps.
Running at a continuous load up to 80% I can stay a couple degrees above ambient, if I go up towards 95% it can get up to 38degrees (room temp is about 28 - 32 depending on the time of day.
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post #8 of 12
I'm not trying to be a buzzkill or anything, but its just not possible. Your CPU can not be below ambient when running water/air. Your load temps are a little lower then your idle temps should be reading. The only reason I bring it up is because when I'm stress testing I want to know the actual temps my computer is. If I remember right, you should be around the mid 40s with a set up like that under 100 percent load. Are you not using prime 95 to test it?
post #9 of 12
Quote:
Originally Posted by ZytheEKS View Post

Quote:
Originally Posted by Redwoodz View Post

Do you mean Athlon II 450? It is common to get a Denab core with a core locked and no L3 cache. 4.2GHz is pretty standard for a C3 revision Denab/Thuban.

If that's a standard OC, is it difficult to get much higher? I can't seem to go past 4.35GHz without starting to have crashing issues.
Its a pretty standard OC. Average Phenoms get between 4.2-4.4. If its a golden chip you can get upwards of 4.6. But that is RARE. I also agree with the poster before me. Your temps do not sound right. What voltage are you using for this OC? I am AT 4.25 with 1.55v and Using CoolerMaster Hyper 212 EVO with 2 x 93CFM fans 3.1mm/H20 I was getting 55C load temps and my ambient's are similar to yours as I live in Africa. With a ThermalTake Water 2.0 Pro with the same fans as on my Hyper, I actually get worse temps sometimes all the way to 60C!
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post #10 of 12
Quote:
Originally Posted by ZytheEKS View Post

I'm using CoreTemp to get the temps.
Running at a continuous load up to 80% I can stay a couple degrees above ambient, if I go up towards 95% it can get up to 38degrees (room temp is about 28 - 32 depending on the time of day.

Coretemp is usually around 10c offset from CPU temp,and does not scale properly at ambient temps,only under load conditions does it read correctly.Most people use Speedfan or Hardware Monitor because CoreTemp will not read unlocked CPU temps,and it's confusing. tongue.gif i.e.
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