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I need help overclocking my AMD Phenom 545

post #1 of 14
Thread Starter 
Ok, I'm new to overclocking...I purchsed an AMD Phenom II 545 processor. My mainboard is an MSI 785GM-E51. I have 2 4gb chips of GSkill Ripjaws DDR3 1333 PC3 10666 Memory.

Here is the issue, Its supposed to be really simple to over clock this because the mainboard has it built in to do so. The board itself has flip swtiches on it to overclock the FSB. It also has the option in the bios to unlock cores, but when thats enabled the graphics does funny stuff.

So I do not know were to start to over clock this. Can anyone help me? Give me some settings to put in or something...

I have the AMD OverDrive app for windows, but even that when I try to use the auto overclock feature it locks up the system immediately. I have plenty of cooling, so I'm not worried about overheating. My case has 3 120mm fans, 2 on the side, 1 in front. I also have a 140mm fan in the top. 2 80mm fans on the cpu heatsink and another 80mm fan in the back. Not to mention the 5.25 intake cooler I have in the drive bay.
    
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post #2 of 14
Fill out your system specs in the user cp tab. That will help everyone.

You should use the bios to overclock. With the 545 you will need to overclock with the base clock. Increasing the base clock from 200 while making sure ram and ht link speeds and managed and cpu-nb you can get a performance boost from overclocking. You should lower your ram multiplier to 5.33 from 6.66 since you only have 1333 ram. I would leave the timings the same as you had them at 1333, you can worry about tightening them later. Lower the ht link multiplier to keep it close to 2000mhz for stability. You probably need to increase voltage on the cpu and cpu-nb slightly depending on the overclock. Take it a step at a time and test for stability (prime 95, intel burn test, etc). Other members might mention trying to unlock that chip. I would recommend against it on that board, as most MSI AMD boards have bad vrms that sometimes explode / catch on fire when overclocking 125w chips.
Edited by RichardS - 5/14/11 at 10:10pm
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post #3 of 14
Thread Starter 
Alright, I added my system information to my profile..That will deffinately be handy if I ever need help again with anything.


I'm going to take the settings you have suggested and give each one a try.
    
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post #4 of 14
leave the oc switches at stock

if you can unlock it, dont overclock it
maybe to x3 with a 5-10% oc not much more
(fsb to 210-220)

545 unlocked to x4 is around 125w, very close to the limit on that board

your ram will most likely caues problems trying to overclock
you may need to bring it down to 1066 and oc it 25% to get it back to 1333 again

whats the 2nd fan you put on the h101?
mismatched fans will be worse than the stock fan alone
here is its stock fan (40cfm)
COOLER MASTER R4-BM8S-30PK-R0 Blade Master 80mm Case Fan
http://www.newegg.com/Product/Produc...82E16835103071

and keep an eye on the temps
dont let it go over 62c, aim for around 55c
post #5 of 14
So how's the OC going so far?

To be honest, I've never actually OC'd my 545 as a dually, as soon as I got it I installed Windows & necessary programs, tested for a stable unlock & have run it as a quad at stock clocks since (a year now), other than pushing and testing the OC as an x4 on occasion.

I left voltages on Auto when OCing up to 3.47GHz, after that I needed to adjust the CPU & CPU-NB voltages myself.

If you haven't already, be sure to enable ACC. If you really want to try to unlock again, I'd also suggest manual voltages of up to 1.4 on the CPU (anything much higher ain't really worth it IMO), increase the CPU-NB by up to 0.1v & try +2 on the 3rd & 4th cores in Manual Core Control. You may be able to get an x3 by disabling one of the 4th cores, it's all trial and error determining what cores are the locked ones, and what one is more problematic.
You may still get no unlock, but you don't know 'til you try.

OCing is pretty much the same principle regarding voltage adjustment, however you can play with up to 1.5v on the CPU, 1.42 if your mobo has no MOSFET cooling to be safe probably.
Lower your RAM divider to get around 1066MHz and crank that HT-REF up 10MHz at a time (static multiplier- 200x15= 3000MHz, 210x15= 3150MHz, 220x15= 3300MHz), then fine-tune as you reach your limits.
Remember, when you raise the HT-REF, your RAM frequency will also raise, so try to keep it around/under 1100MHz for now.
Pump that NB to 2500-2600 (this and HyperTransport also raise with HT-REF increase) by leaving the NorthBridge Multi at x10, adding a little NB voltage if required, NB does more to performance than that last 100-200MHz on the clock.
Keep HT at around 2000MHz by lowering the HT multi to x9 as you start to OC (210X9), and to x8 as your clocks get higher.

Ultimately, the Motherboard, CPU, CPU revision (can be seen in CPU-Z- RB-C2 or C3. C3's are newer and clock a little higher due to manufacturing refinement, C2's usually top out at 3.8, unless you give massive voltage hike), perseverance and luck all play factors.

Keep max CPU temp below 62c (55 where humanly possible for stability's sake) as previously stated and you're golden.

Let us know how it goes mate.
Edited by EvoBeardy - 5/15/11 at 2:42am
 
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post #6 of 14
Quote:
Originally Posted by EvoBeardy View Post
So how's the OC going so far?

To be honest, I've never actually OC'd my 545 as a dually, as soon as I got it I installed Windows & necessary programs, tested for a stable unlock & have run it as a quad at stock clocks since (a year now), other than pushing and testing the OC as an x4 on occasion.

I left voltages on Auto when OCing up to 3.47GHz, after that I needed to adjust the CPU & CPU-NB voltages myself.

If you haven't already, be sure to enable ACC. If you really want to try to unlock again, I'd also suggest manual voltages of up to 1.4 on the CPU (anything much higher ain't really worth it IMO), increase the CPU-NB by up to 0.1v & try +2 on the 3rd & 4th cores in Manual Core Control. You may be able to get an x3 by disabling one of the 4th cores, it's all trial and error determining what cores are the locked ones, and what one is more problematic.
You may still get no unlock, but you don't know 'til you try.

OCing is pretty much the same principle regarding voltage adjustment, however you can play with up to 1.5v on the CPU, 1.42 if your mobo has no MOSFET cooling to be safe probably.
Lower your RAM divider to get around 1066MHz and crank that HT-REF up 10MHz at a time (static multiplier- 200x15= 3000MHz, 210x15= 3150MHz, 220x15= 3300MHz), then fine-tune as you reach your limits.
Remember, when you raise the HT-REF, your RAM frequency will also raise, so try to keep it around/under 1100MHz for now.
Pump that NB to 2500-2600 (this and HyperTransport also raise with HT-REF increase) by leaving the NorthBridge Multi at x10, adding a little NB voltage if required, NB does more to performance than that last 100-200MHz on the clock.
Keep HT at around 2000MHz by lowering the HT multi to x9 as you start to OC (210X9), and to x8 as your clocks get higher.

Ultimately, the Motherboard, CPU, CPU revision (can be seen in CPU-Z- RB-C2 or C3. C3's are newer and clock a little higher due to manufacturing refinement, C2's usually top out at 3.8, unless you give massive voltage hike), perseverance and luck all play factors.

Keep max CPU temp below 62c (55 where humanly possible for stability's sake) as previously stated and you're golden.

Let us know how it goes mate.
your board is better build for higher tdp cpu's
4+2 power phase with heatsinks on the mosfets/vrms

if the op tries that it will burst into flames
post #7 of 14
With that board go for a 10-20% OC...try not to raise the cpu voltage to much try OCing with the stock cpu volts and see how far you get. You can refer to my guide in my sig also if you want, some links to good guides in it.
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post #8 of 14
Thread Starter 
Thanks guys, I've tried everything...and every time I change ANY setting or if I remove a setting off of AUTO, the computer will either lock up, or when I shut it off it wont even re-boot and I have to re-set the bios settings with the jumper on the board.

I guess overclocking must just not be my thing, or its not meant to overclock my hardware.
    
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post #9 of 14
Thread Starter 
Oh yeah and I can get the other cores to unlock, but when it goes to boot into windows, the graphics are all weird (looks like a bunch of lines and dots) and it doesnt run right.
    
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post #10 of 14
Thread Starter 
Hey I think I got it, I managed to unlock all 4 cores and the computer is running smoothly!

My AMD program wont detect any of the temps now. So I need to get a third party software that will. For the last hour though I've let my pc run for 15 minutes burning a dvd (so it wasnt idle) then shut it off and went into my bios and checked my temps. Nothing was over 60c
    
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