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Overclocking Amd Cpu(It is athlonII x3 445 unlocked to phenom x4 B45)

post #1 of 8
Thread Starter 
So, I was wondering what I need to do to overclock the AthlonII x3 445 or PhenomII x4 B45, whatever it is suposed to be called. I built my computer and within the first day I unlocked the fourth core, and determined it was stable(so was the L3 cache).
After that I was happy and realized this basicaly saved me $40 from buying a more expensive cpu. However, I was wondering how to overclock it the most efective way, and how hot I should allow it to get will running prime 95.
I have a ARCTIC COOLING Freezer 7 Pro Rev.2 cpu cooler. In addition I have 4 case fans configured sot that one fan is blowwing air from outiside the case to the cpu fan, and 2 fans above the cpu forcing air out.
Now, back to the whole ocing, I tried with the ASRock oc utility, however I couldn't get anything stable(or realitivley cool temps) in prime. I was testing with 3d mark(the dx 11 version) before prime, and my highes oc of 300mhz above stock crashed the computer there. So, I would just like a guide on what to do. I have been searching for hours and Haven't found anything.
    
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post #2 of 8
Your cooler should be more than sufficient I would expect temps of 50 or less under load would be acceptable{while up 68c would not be of detriment to your system}. Have you ran [URL="javascript:void(fileWindow('4fd37197ee2ba4d40b0e60468c72b058'));"]Prime 95[/URL] to determine stability? I would suggest 6+ hours to verify the stability of the 4th core. Most likely you are good to go, but its always good to check.

Here is an essentials Guide to overclocking the AM3 processors, If you have the options in your motherboard to configure cores separately you might could oc the first 3 cores higher than the 4th or increase the voltage to just the 4th core to keep it stable in rank with the 3 good ones.

Overclocking Essentials

Here is a guide to the AM2 overclocking that will give you a basic concept of OCing for AMD. Its a good read and will inform you on proper OC'ing procedure to get the most out of your processor.
AM2 Overclocking Guide for Reference
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post #3 of 8
Thread Starter 
Thanks, I couldn't find anything that really explained overclocking and I'm sure those guides will sufice. Next, I would like to say I am 100% sure the 4th core is fine because combined I have done probably around 7 and 3/4 hour of stress testing. I did an overnight prime test last night for 5.75 hours aprox.
I keep a monitor on my temps whenever doing testing, the max was at 50C. So, I geuss what you mean is I can get up to 68C without any wories. That is important because I had a stable overclock at around .5 Ghz over stock however I was worried when it hit 56C and shutdown prime. Thanks, and I will report some more findings here later on my OC.
    
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post #4 of 8
You should be fine if 5.75 hours of prime turned up fine. Post your rig under the user control panel "Add System" and you will get a flurry of suggestions from people who have identical hardware setups. Welcome to OCN!

Thought I would welcome someone new since this is my 100th post!
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by cook;11807964 
You should be fine if 5.75 hours of prime turned up fine. Post your rig under the user control panel "Add System" and you will get a flurry of suggestions from people who have identical hardware setups. Welcome to OCN!

Thought I would welcome someone new since this is my 100th post!

Thanks for the info on the importance of adding your rig. Congratulation on your 100th post.
    
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post #6 of 8
return the cooler, minimum for AMD quad core, especially overclocked is the hyper 212 plus

lol..ok with freezer 7 ... LOL
post #7 of 8
I'm pretty sure the temp readings are off by at least 5. I haven't seen an unlock yet that didn't break it. Add a minimum of 5 to your temps. (i never let it reach over 54C)
Have you ran prime95 after only unlocking before overclocking ? Have you raised the voltages ?
Can you post shots of CPU-Z and HWmonitor (min and max temps) ?
Some people will tell you "a few " hours of prime is fine. Others will tell you that you won't know if it's truly stable until you run a minimum of 12 hours. others say 24 hours.
I have had prime error on a single core after 12 hours.
Read the guides, read them some more, then see what that new puppy can do!
Good luck and welcome to OCN.

edit: most turn off cool n quiet to stress test too.
Edited by pc-illiterate - 12/29/10 at 5:38am
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post #8 of 8
Thread Starter 
Thanks, For some more advice. I geuss I will go turn off my ACC for a second and test the temps to see how far off they might actually be. To be honest though I know I can't do anything about my cooler, because the cooler was bought specificly by me for this system and I didn't do the homework there. I knew I would need more than a Stock for some OC but didn't check much more into it. I wish I hadn't installed it to my pc now as I would have return newegg and bought a hyper 212 plus.
However, so does anyone know any ways to mod the cooler to make it better. I was thinking it is close enough to one of my case fans I could close of the edges and make it somewhat push pull. I was also thinking about taking my 80mm case fan and mounting it to the heatsing and closing of the edges. However that would put it right next to the case fan.
To answer some more questions, I ran prime with only the stock speed, however this was with ACC on so I had 4 core and an L3 cache. The temps were reading in speedfan(however they may be wrong as was just pointed out) 50 at the max. This was after running for about 6 hours.
When I did overclock, I didn't run prime for too long as I was leaving and didn't want my cpu to fry when I was away from it. I know my temps went to (reading at least) 56C for a brief moment and then back down to 55C. My General rule is 55 and under. I let it hit 56C to see if it would keep going up as I then would have no hope.
So, thanks for all the advice and I will know be trying to do some tests.
P.S. I may post a pic of my case with fansd to show my cooling set up.
Edit:
I have now went and checked my temps in prime without the ACC on and it gives me a temp of 42C with just the three cores. I was wondering if the extra core really makes the difrence that puts the cpu at 50C, which is 8 degrees hotter! I mean I knew the cpu threw off more heat when unlocked, but that much. I thought it would be less than that. So, does the extra core really make that much of a difrence or is it a error.
Edited by Build It Fast - 12/29/10 at 4:18pm
    
CPUMotherboardGraphicsRAM
AMD Phenom II x4 B45(Unlocked AMD Athlon II x3 445 ASRock M3A770DE His Radeon 5830 4 GB G.SKill Ripjaws 
Hard DriveOSKeyboardPower
1TB Seagate HDD Windows7 Home Premium Saitek Cyborg V5 Corsair-TX650W 
CaseMouseMouse Pad
Cooler Master Elite 430 Microsoft Mouse Gaming Mouse(not sure the x000) My Desk 
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CPUMotherboardGraphicsRAM
AMD Phenom II x4 B45(Unlocked AMD Athlon II x3 445 ASRock M3A770DE His Radeon 5830 4 GB G.SKill Ripjaws 
Hard DriveOSKeyboardPower
1TB Seagate HDD Windows7 Home Premium Saitek Cyborg V5 Corsair-TX650W 
CaseMouseMouse Pad
Cooler Master Elite 430 Microsoft Mouse Gaming Mouse(not sure the x000) My Desk 
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