Overclock.net › Forums › AMD › AMD CPUs › First time CPU overclocking AMD 925 questions
New Posts  All Forums:Forum Nav:

First time CPU overclocking AMD 925 questions

post #1 of 12
Thread Starter 
Ok so this is the first time I am going to attempt to overclock my CPU. I am waiting for my COOLER MASTER Hyper 212 Plus to come in the mail before I begin. It should be here next week, so I thought it might be a good idea to ask some questions in advanced so by the time it comes hopefully I know what to do.

System Specs:
AMD phenom II x4 925 Processor
M4A77T/USB 3 Asus motherboard
4 GB Corsair 1600 Ram (2x2GB)
GeForce GTX 560 Ti
CoolerMaster HAF 912 case
COOLER MASTER Hyper 212 cpu cooler
650 watt corsair power supply

Current settings:
CPU Core Speed: 2800 MHZ
Ram: 1333 MHZ
FSB: 200
FSBRAM = 3:10
HT Link= 2000 MHZ
NB Frequency = 2000 MHZ

So I think my goal would be to reach around 3.4 GHZ possibly 3.5 GHZ if that's even possible (moving up slowly to eventually get there). I would have to do this through the FSB since my processor can not change its multiplier.

So let me ask if these calculations are correct or if I'm doing something wrong?

If I was trying to get a FSB speed of 240 would it be like this?

FSB: 240
CPU: (240x14=) 3360 MHZ
HT: (240x 8(HT multiplier)) = 1920 MHZ
Ram: 240x3.33(FSBRAM Ratio)= 800 MHZ
NB: 240x10(NB multiplier)= 2400 MHZ

So I am wondering if these calculations are correct?

Does that look like a reasonable overclock plan?

Is it simple to change the HT Multiplier to keep it around 2000 (I have never changed it)?

Also, should I try to keep the NB frequency around 2000 like it is now or would it be worth it to get it around 2400 MHZ?

One other thing I was wondering is does it matter if the FSB: DRAM ratio is really weird? Say For example it was 6:19 so that a 250 FSB would get my ram at 791 MHZ?

And finally, how many voltage changes do you think would be necessary to overclock to around 240 FSB? Would it be worth it or should I maybe aim for something lower like 3.2 GHZ?

I hope that I am somewhat on the right track here or this whole post is going to make me sound really noobie.

Thanks for any feedback and help!

Edit: I forgot, besides changing some voltages, potentially changing the FSBRAM ratio, and changing the NB and HT multipliers are there any other settings I would have to configure?

It seems like changing the voltages is going to be the trickiest part if I am understanding everything else correctly.
Edited by Tokadub - 2/11/11 at 10:57pm
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
post #2 of 12
Just try those settings and see if it passes 6-8 hrs of Prime 95.

Personally, I wouldn't jump that far that quickly. Overclocking is something that takes time and finesse. You can't just ask someone for settings. There are tons of variables that are only applicable to your situation.

Start small. 200-220 FSB. From there, if it passes, go up in increments of 5/10 until you fail something, then go back and up VCore.

Also, the FSB: Dram ratio means nothing on AMD systems. Just ignore it.
/hwaw
(20 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core i7 3770k @ 4.3ghz 1.160v ASRock Z77 Extreme6 Gigabyte R9 290 Windforce Sapphire R9 290 
RAMHard DriveHard DriveHard Drive
2x4gb Samsung RAM @ 2000mhz 9-10-9-28 1.425v OCZ Vertex 4 Hitacho Deskstar Crucial M550 
CoolingCoolingCoolingOS
Corsair H80 (CPU) Thermalright Spitfire (GPU) Gelid Icy Vision (GPU) Windows 7 Ultimate 64-bit 
MonitorMonitorKeyboardPower
BENQ GW2450 Asus PB278Q Cooler Master Quickfire Rapid Seasonic 750w  
CaseMouseMouse Pad
Black Interior HAF 932 Roccat Kone  Artisan Hien Hard 
  hide details  
Reply
/hwaw
(20 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core i7 3770k @ 4.3ghz 1.160v ASRock Z77 Extreme6 Gigabyte R9 290 Windforce Sapphire R9 290 
RAMHard DriveHard DriveHard Drive
2x4gb Samsung RAM @ 2000mhz 9-10-9-28 1.425v OCZ Vertex 4 Hitacho Deskstar Crucial M550 
CoolingCoolingCoolingOS
Corsair H80 (CPU) Thermalright Spitfire (GPU) Gelid Icy Vision (GPU) Windows 7 Ultimate 64-bit 
MonitorMonitorKeyboardPower
BENQ GW2450 Asus PB278Q Cooler Master Quickfire Rapid Seasonic 750w  
CaseMouseMouse Pad
Black Interior HAF 932 Roccat Kone  Artisan Hien Hard 
  hide details  
Reply
post #3 of 12
Thread Starter 
Ok, so my CPU cooler should be coming in the mail today if the Fed EX estimate is accurate. I still have some more questions.

Disabling cool and quiet c1e support? Why is this necessary or is it just a preference?

Do i need to change the voltage settings from auto and select them all myself? Or will raising the speeds automatically raise the voltages accordingly? I don't know if I would trust auto raising voltages even if its supposed to do that.

Also my motherboard has automatic overclocking options such as 5%,10%,15%,20%. It also has an option to set the cpu speed to 3.0 GHZ, 3.2 GHZ, and 3.4GHZ.

I believe it even says like:

"AMD Phenom II x4 945 3.0 GHZ"

as an optional overclock setting. So I am wondering should I even consider trying out any of these default settings?

Or should I do everything manually? And if so what voltage setting should I leave on auto if any? And what settings should I do myself?
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
post #4 of 12
Thread Starter 
OK just managed to get the Cooler Master Hyper 212 plus installed without even removing my motherboard from the case. It was kind of hard though actually screwing it in for the final step. And I hope I didn't mess up the thermal paste to bad I'd rather not have to reapply it.

So far at 2800MHZ it is Idle at 22 degrees and Stress it was 35 degrees Celsius.

With the stock cooler it was about 34 idle and went up to 56 very fast with prime 95 stress at which point i stopped it out of fear.

Gonna start trying to overclock now if anyone can post any feedback that would be greatly appreciated I will check it as I go.
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
post #5 of 12
Disabling Cnq/C1E is not necessary. 90% of the time it works perfectly as needed and does not interfere with overclocks. Another extremely common AMD misconception. My sig rig is running both CnQ and C1E. Look again: I run x6 at 4Ghz. Nothing's impossible
post #6 of 12
Thread Starter 
Thanks xc, I will try to leave those settings alone for the moment then.

So far I am at 3080 MHZ @ 1.4v 41 degrees stress.

HT Link is 1920 MHZ

NB Frequency is 2200 MHZ

and ram is 733 MHZ (max should be 800)

Hopefully this sounds good so far I'm gonna try to raise the FSB in increments of 5 now and test the results.
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
post #7 of 12
Raise the bus clock a bit more so RAM runs at 800Mhz (1600Mhz DDR). You can lower multipliers of everything else to compensate in case they get too high.
post #8 of 12
Thread Starter 
OK so I now reached my original goal

At 3360 MHZ @ 1.4v

28.0 degrees Idle 45.0 degrees load

HT Link 1920 MHZ

NB Frequency 2400 MHZ

Ram 800 MHZ

Now the question is should I try to push it farther? Is 45 degrees load good for a long term overclock? And I mainly use my computer for gaming so how much benefit would I gain from going over 3360 MHZ?
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
post #9 of 12
Thread Starter 
So from overclocking my cpu from 2.8 GHZ to 3.36 GHZ my 3D Mark 11 score went from about : P4100 to P 4250. Not bad

And I just overclocked my Graphics card from:

Core: 900->950
Shader: 1800->1900
Memory: 2100->2190

And that brought my 3DMark 11 score from P4250 to P4426.

So it seems overclocking graphics cards has a much bigger effect on 3DMark 11 then overclocking the CPU.

So I am probably going to try to stick around at these settings for awhile to make sure everything is 100% stable.

But I am still curious if anyone thinks I should try to overclock higher then 3.36 GHZ? What kind of performance gains might I get from normal computer usage and high-end gaming?

P.S. Thanks to everyone so much on this website for helping me out! I have also read a ton of posts prior to attempting to overclock and I feel that it helped me a great deal to do this successfully
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
post #10 of 12
Thread Starter 
So I have recently been messing around with streaming using Adobe Flash Media Encoder 3.2, and doing so I now feel curious to try to overclock further because attempting to stream a game like Crysis for example is obviously pretty demanding for the cpu.

So I now have my FSB @ 250. Here are my details right now at these settings:

At 3500 MHZ @ 1.4v

46.0 degrees Celsius load

HT Link 2000 MHZ

NB Frequency 2500 MHZ

Ram 667 MHZ 8-8-8-20-27-1t

I am wondering how much further could I possibly go safely? It seems not many people really overclock the AMD Phenom II 925, so I don't really have a good idea of what this chip is capable of.

I also have all my voltages set to auto in the bios. So while 1.4v for the cpu should be fine, I am wondering if the other volts might be dangerous if I go higher with the auto volt settings?
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › First time CPU overclocking AMD 925 questions