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First BSOD with phenom ii x4 925

post #1 of 12
Thread Starter 
OK so I finally decided that I wanted to try to push my CPU even further.

Up till this point I have left all the voltages set to auto and all I've done is increase the FSB in increments of 5 and then adjust the ram and HT speed if necessary.

I just did 3640 MHZ using auto voltages and did my stress tests and it was working fine.

Decided I would try to go further for 3710 MHZ and when running prime 95 I finally got my first overclocking BSOD. So now I need to actually adjust the voltages manually if I want to try to get this overclock. I am going to start raising the cpu voltage in very small increments for now up from 1.4 to see if this will fix the problem.

Also I am aware that I may need to raise my cpu-northbridge voltage because my NB is at 2650 MHZ with this overclock. I believe that to do this is the VDDNB over voltage setting? The problem is it is set to auto voltage right now and I don't know what voltage auto is set to. If I press the + key to raise the voltage it starts me at .9 volts. Is there any way to check what your CPU-NB voltage is on auto?

Also I am wondering if perhaps the AMD Phenom II x4 925 which stock clock is only 2.8 GHZ maybe just can't go past 3640 MHZ for me? Is it worth trying to go farther by doing voltages manually or is it more likely my cpu just hit its limit?
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Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
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Cooler Master HAF 912 
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post #2 of 12
About Ur voltages: I should always set Ur volts manually so U know where U are stable. So I would have set the nb speed and volt to stock(2000 and 1.2v) and start oc again. Oc one thing at the time so U know whats holding back Ur OC. Leave HT at stock(2000)
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post #3 of 12
Thread Starter 
Well I set my NB speed to 2385 MHZ down from 2650 MHZ with the CPU/NB frequency. I have run higher then this on auto CPU/NB voltage so I am attempting to see if this BSOD is isolated to my cpu.

I have set the voltage up to 1.43 volts but when I run prime 95 my CPU-z says my voltage is under 1.4v. What could be causing that the LLC?

Still trying to slowly raise my cpu voltage to see if it will work. Since I lowered the NB speed I am hoping this would isolate just the cpu as the problem?

Also how do you know the default CPU/NB voltage is 1.2v? It says in my motherboard manual it varies by CPU but I can't find anything saying what the amd 925 CPU/NB voltage is by default.
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Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
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1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
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Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
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1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
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post #4 of 12
I think U should set the cpu/nb volt to 1.2. I dont know it thats the stock volt but it wont be far away.

About the vdrop. The llc should keep U above what U have set in bios. Why it falls down under Im not sure of:(.
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Rig
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CPUMotherboardGraphicsRAM
Fast one! Asus Good one! Yeah got sum of that... 
Hard DriveCoolingOSMonitor
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post #5 of 12
Thread Starter 
OK, so I seemed to finally get this stable at 3710 MHZ. It appears the auto voltages were way to low. I have set the cpu voltage manually now to 1.447v.

I also set the NB back to 2650 and it seems fine on auto voltage so far.

So now my overclock is like this:

CPU speed: 3.71 GHZ @ 1.447 volts
NB frequency: 2650 MHZ
HT link: 1855 MHZ
Ram: 1412 MHZ 8-8-8-20-27-1T

Maximum temperature was 48 degrees Celsius for cpu.

How does this overclock look?

1.447 volts is quite a jump from where I was but it should be fine?

Also my HT link is quite low at 1855mhz but I believe I would have to push it up to nearly 2100mhz as the next best option and I have heard you should not exceed 2000mhz?
My computer
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CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
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1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
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Cooler Master HAF 912 
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My computer
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CPUMotherboardGraphicsRAM
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Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
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Cooler Master HAF 912 
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post #6 of 12
Thread Starter 
Seems like I spoke to soon. Upon further stress testing my 3710 MHZ overclock was still crashing. I upped the voltage to 1.45v and it still crashed eventually.

I am going to back off to 3640 MHZ and see how this goes. I also set all my voltages back to auto and so far it seems to be working fine.

What do you guys think, is 1.45v still not enough for a 3710 MHZ overclock? Or is 3710 MHZ just to high to be stable for my cpu?

I kind of think my cpu just hit its wall since it's only 2.8 ghz stock, but I would like to know what those more experienced think about this.
My computer
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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
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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 
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post #7 of 12
i also hit the 3.7ghz wall. and have settled for 3.6, im happy with that.
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the newy
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post #8 of 12
3.7 isn't wall guys your just scared to increase more voltage... wink.gif
    
CPUMotherboardGraphicsRAM
AMD Phenom II x4 925 C2 2.8@3.7GHz NB 2.65GHz 1... Asrock 970 Extreme 4 UEFI Palit GTX 460 Sonic Platinum 840MHz Core/1055MH... 2x4GB Kingston HyperX 1600@1414MHz 7-7-7-21 1.65v 
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CPUMotherboardGraphicsRAM
AMD Phenom II x4 925 C2 2.8@3.7GHz NB 2.65GHz 1... Asrock 970 Extreme 4 UEFI Palit GTX 460 Sonic Platinum 840MHz Core/1055MH... 2x4GB Kingston HyperX 1600@1414MHz 7-7-7-21 1.65v 
Hard DriveOptical DriveCoolingOS
Seagate Barracuda 1TB 7200RPM 32MB Sata 3 6GB/s Sony Optiarc 5260s 24X DVD+/-RW Cooler Master Hyper TX3 / AMD Stock fan as VRM ... Windows 7 Ultimate x64 
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post #9 of 12
with 1.5v you can get 3.75 and 1.575 3.85 1.6 3.95ghz 1.65 4ghz
    
CPUMotherboardGraphicsRAM
AMD Phenom II x4 925 C2 2.8@3.7GHz NB 2.65GHz 1... Asrock 970 Extreme 4 UEFI Palit GTX 460 Sonic Platinum 840MHz Core/1055MH... 2x4GB Kingston HyperX 1600@1414MHz 7-7-7-21 1.65v 
Hard DriveOptical DriveCoolingOS
Seagate Barracuda 1TB 7200RPM 32MB Sata 3 6GB/s Sony Optiarc 5260s 24X DVD+/-RW Cooler Master Hyper TX3 / AMD Stock fan as VRM ... Windows 7 Ultimate x64 
MonitorPowerCase
Samsung SyncMaster S24B300HL 1920x1080 Cooler Master GX 750W Cooler Master Elite 430 Black 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD Phenom II x4 925 C2 2.8@3.7GHz NB 2.65GHz 1... Asrock 970 Extreme 4 UEFI Palit GTX 460 Sonic Platinum 840MHz Core/1055MH... 2x4GB Kingston HyperX 1600@1414MHz 7-7-7-21 1.65v 
Hard DriveOptical DriveCoolingOS
Seagate Barracuda 1TB 7200RPM 32MB Sata 3 6GB/s Sony Optiarc 5260s 24X DVD+/-RW Cooler Master Hyper TX3 / AMD Stock fan as VRM ... Windows 7 Ultimate x64 
MonitorPowerCase
Samsung SyncMaster S24B300HL 1920x1080 Cooler Master GX 750W Cooler Master Elite 430 Black 
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post #10 of 12
Quote:
Originally Posted by yuksel911;13781922 
with 1.5v you can get 3.75 and 1.575 3.85 1.6 3.95ghz 1.65 4ghz

You're lucky, I need 1.51v to get to 3.55 GHz...

I think I need to switch to watercooling rolleyes.gif
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