Overclock.net › Forums › AMD › AMD CPUs › Phenom II X4 945 OC Help
New Posts  All Forums:Forum Nav:

Phenom II X4 945 OC Help

post #1 of 13
Thread Starter 
My current computer build is:

Motherboard: ASRock 880G Extreme 3 latest BIOS
Processor: Phenom II X4 945 3GHz 95W
CPU Cooler: CM Hyper 212+
Memory: 6GB DDR3 1600
Graphics: ATI Radeon HD 5770
Power supply: 650W Cooler Master

I have had a terribly difficult time trying to overclock this CPU. From other advice, I tried taking a stick of RAM out, but it barely helped at all. So far my highest 15-min prime stable specs are:

CPU: 3.30GHz
CPU V: 1.400V
NB: 1888
NB V: 1.200V
RAM: ~1600MHz
RAM V: 1.645V
8-8-8-24 timing
39C max temps

(I think those are about right, I'm in class right now, can get more info when I get home)

When I was adjusting settings, I had the RAM at the 667 setting and only 2 sticks in. I don't have a CPU-NB option to adjust, just a NB option. In CPU-Z, my voltage is listed at 1.448V at idle and 1.4504V under load. I just have a 4-pin cable for my CPU power.

If I try to bump the CPU to 3.33GHz it will crash within 5 mins of the prime95 blend test. I have tried a ton of adjusting and can't get anything better, though I've seen others hitting 4.0GHz even, and higher than I'm getting on stock voltage.

What should I do?

Thanks
Edited by bradthebold - 2/15/12 at 10:50am
post #2 of 13
You wouldn't happen to have diffferent RAM / motherboard to test with would you?

Also, try the Small FFT's and let us know what happens

You said you took one stick of RAM out .. have you tried both sticks in all 4 slots ? (8 combinations)
Feed The Dada
(12 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-2600k Asrock Z77e-itx MSI 7970 Samsung 30nm 8GB 
Hard DriveCoolingCoolingOS
Samsung 840 250GB SSD H100 w/ 2x SP120 Antec Kuhler 920 w/ 1x SP120 Linux Ubuntu 10.10 
PowerCaseAudioAudio
Seasonic X650 Bitfenix Prodigy E07K HFI-580 
  hide details  
Reply
Feed The Dada
(12 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-2600k Asrock Z77e-itx MSI 7970 Samsung 30nm 8GB 
Hard DriveCoolingCoolingOS
Samsung 840 250GB SSD H100 w/ 2x SP120 Antec Kuhler 920 w/ 1x SP120 Linux Ubuntu 10.10 
PowerCaseAudioAudio
Seasonic X650 Bitfenix Prodigy E07K HFI-580 
  hide details  
Reply
post #3 of 13
Thread Starter 
This is the only RAM and motherboard I have right now, so I couldn't try anything else.

I haven't tried any other combination of RAM slots.. Should I just put 1 stick in and try all 4 slots with that? Or different combinations of the 3 sticks in the 2 matched slots?

I ran the small FFT test when I first started. I had it at 1.465V (1.504 under load in CPU-Z) and it ran for a few minutes at 3.60GHz. It didn't fail, but I only ran it for a few minutes. It hit 36C. This was with all 3 sticks of RAM too.

When I get home I'll swap ram around and run some new small FFT tests and see what the highest I can get on 2 sticks at that voltage is.
post #4 of 13
Quote:
Originally Posted by bradthebold View Post

This is the only RAM and motherboard I have right now, so I couldn't try anything else.
I haven't tried any other combination of RAM slots.. Should I just put 1 stick in and try all 4 slots with that? Or different combinations of the 3 sticks in the 2 matched slots?
Hold on why are you running 3 sticks!?
Quote:
Originally Posted by bradthebold View Post

I ran the small FFT test when I first started. I had it at 1.465V (1.504 under load in CPU-Z) and it ran for a few minutes at 3.60GHz. It didn't fail, but I only ran it for a few minutes. It hit 36C. This was with all 3 sticks of RAM too.
36°C is fine for CPU temps o.O
Is the 36C RAM temps or CPU temps?
If it's CPU temps... it's very suspiciously low. Are you sure all the cores are under 100% stress?
Quote:
Originally Posted by bradthebold View Post

When I get home I'll swap ram around and run some new small FFT tests and see what the highest I can get on 2 sticks at that voltage is.
Try one stick in slot 1, in slot 2, in slot 3, and so forth.
The objective of this is to possibly identify one faulty RAM stick or DIMM slot.


In general, you shouldn't be running triple-channel RAM in a dual-channel AMD motherboard. I would only use two RAM sticks if I was you... for stability.
Feed The Dada
(12 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-2600k Asrock Z77e-itx MSI 7970 Samsung 30nm 8GB 
Hard DriveCoolingCoolingOS
Samsung 840 250GB SSD H100 w/ 2x SP120 Antec Kuhler 920 w/ 1x SP120 Linux Ubuntu 10.10 
PowerCaseAudioAudio
Seasonic X650 Bitfenix Prodigy E07K HFI-580 
  hide details  
Reply
Feed The Dada
(12 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-2600k Asrock Z77e-itx MSI 7970 Samsung 30nm 8GB 
Hard DriveCoolingCoolingOS
Samsung 840 250GB SSD H100 w/ 2x SP120 Antec Kuhler 920 w/ 1x SP120 Linux Ubuntu 10.10 
PowerCaseAudioAudio
Seasonic X650 Bitfenix Prodigy E07K HFI-580 
  hide details  
Reply
post #5 of 13
Thread Starter 
Sorry, I'm only running two sticks. I meant I was going to cycle between all 3, just filling two of the slots.

And yeah, I'm using HWmonitor to see CPU temps. With the side of my case off, it idles around 20C. It's been running the small FFT test for 5 mins now and is at 37C. All cores 100% in task manager. It hit 40C with the side of the case on.

And yeah, I realize this ram setup isn't the greatest, but ram was expensive when I got them. I'll try to get it stable on 2 sticks, then see if I can get it to work with 3 by lowering speed/loosening timings, or just stick with the 2.

Right now I have 2 sticks in and am trying to find the highest stable small FFT frequency I can get, then I'll cycle each stick through all 4 slots and see if it will go higher.


Ok, the highest I got to work with 2 sticks under load in CPU-Z:

CPU: 3.458GHz
CPU V: 1.456V (set at 1.400V)
Multiplier: x 14
FSB: 247MHz
HT: 1976MHz
NB V: 1.200V
RAM: 1374MHz
37C Max after 10 mins

248MHz FSB crashed as soon as windows loaded; with a 15x multiplier and a little faster NB/HT, it crashed at 3.42GHz
Edited by bradthebold - 2/15/12 at 5:21pm
post #6 of 13
Thread Starter 
I just finished testing every stick of ram, one by one, in each of the slots. I set the CPU to 3.34GHz and it failed every single time. I put all 3 sticks back in and it passes the blend test at 3.30GHz without a problem; using all 3 sticks doesn't seem to affect performance at all.
post #7 of 13
What are your NB / HT link speeds + voltages?
Feed The Dada
(12 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-2600k Asrock Z77e-itx MSI 7970 Samsung 30nm 8GB 
Hard DriveCoolingCoolingOS
Samsung 840 250GB SSD H100 w/ 2x SP120 Antec Kuhler 920 w/ 1x SP120 Linux Ubuntu 10.10 
PowerCaseAudioAudio
Seasonic X650 Bitfenix Prodigy E07K HFI-580 
  hide details  
Reply
Feed The Dada
(12 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-2600k Asrock Z77e-itx MSI 7970 Samsung 30nm 8GB 
Hard DriveCoolingCoolingOS
Samsung 840 250GB SSD H100 w/ 2x SP120 Antec Kuhler 920 w/ 1x SP120 Linux Ubuntu 10.10 
PowerCaseAudioAudio
Seasonic X650 Bitfenix Prodigy E07K HFI-580 
  hide details  
Reply
post #8 of 13
Thread Starter 
At 3.30GHz where it's stable, the NB/HT speeds are 1888MHz and the voltage is stock 1.200V.


I just ran 2 sticks at 3.34GHz and it passed for 10 mins, but failed at 3.37.
post #9 of 13
Push the NB frequency to 2400-2600 MHz.
Put CPU-NB to 1.3V (I recall you saying that wasn't possible...)

There's something catching... NB seems like the best suspect right now.
Feed The Dada
(12 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-2600k Asrock Z77e-itx MSI 7970 Samsung 30nm 8GB 
Hard DriveCoolingCoolingOS
Samsung 840 250GB SSD H100 w/ 2x SP120 Antec Kuhler 920 w/ 1x SP120 Linux Ubuntu 10.10 
PowerCaseAudioAudio
Seasonic X650 Bitfenix Prodigy E07K HFI-580 
  hide details  
Reply
Feed The Dada
(12 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-2600k Asrock Z77e-itx MSI 7970 Samsung 30nm 8GB 
Hard DriveCoolingCoolingOS
Samsung 840 250GB SSD H100 w/ 2x SP120 Antec Kuhler 920 w/ 1x SP120 Linux Ubuntu 10.10 
PowerCaseAudioAudio
Seasonic X650 Bitfenix Prodigy E07K HFI-580 
  hide details  
Reply
post #10 of 13
Thread Starter 
Ok, I set it to 3.37GHz and set the NB to 2410MHz and left the HT what it was and it failed. Then I bumped the HT up to 2410MHz too, and it failed as well.

CPU options: I have spread spectrum disabled, Cool n Quiet disabled, C1E disabled, and CPU thermal throttle disabled


And here's what my BIOS looks like:

ZwpVUl.jpg
Edited by bradthebold - 2/15/12 at 7:50pm
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › Phenom II X4 945 OC Help