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AMD FX 4100 Overclock Help

post #1 of 23
Thread Starter 
Hi there, i am trying to over clock my 4100 but seem to be hitting some trouble.

Specs

AMD FX 4100 (All Cores Unlocked in Bios)
CPU Cooler: Notchua NH D14
Motherboard: Asus M5A78L-M/USB3
RAM: 16 GB (4x4GB) Corsair Vengeance 1600Mhz 9-9-9-24
Case: NZXT Phantom Enthusiast Full Tower

Currently I am unstable using the following

CPU Freq: 205
Multiplier: x22
Core Speed: 4.5 Ghz
VCore: 1.45
LLC: Auto
(Everything Else Auto)


RAM Freq: 1600Mhz
Voltage: 1.5
Timings: 9-9-9-24 CR2
(Everything Else Auto)

Prime Shows a fatal error after a hour on blend and PC restarts but Ive read the CPU Vcore should not exceed 1.45V for 24hr use. Also under 100% load in prime the cpu does not exceed 42c.

Any help on getting a good overclock from this machine would be appreciated.
post #2 of 23
Follow the guide here:

http://www.overclock.net/t/1348623/amd-bulldozer-and-piledriver-overclocking-guide-asus-motherboard/0_20
    
CPUMotherboardGraphicsRAM
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post #3 of 23
Quote:
Currently I am unstable using the following

CPU Freq: 205
Multiplier: x22
Core Speed: 4.5 Ghz
VCore: 1.45
LLC: Auto
(Everything Else Auto)

If APM was still enabled (assuming this based on everything else being left alone here), the chip would not maintain 4.5ghz under a parallel workload, it would have throttled down to attempt to stay close to TDP limits. Hate to say it, but this means that you are unstable, and may not have even been at 4.5ghz during the test.

My theory, is that after an hour, the VRMs have heat-soaked the motherboard to the point that the voltage starts dipping, which causes the instability. That motherboard is going to be a limiting factor to having an overclock that can handle continuous workloads like that. I realize it's "only" a 4 core, but zambezi is still a total power pig when overclocked.

You've got a 300W capable HSF strapped to a motherboard that will tap out at 140W or less. With the reduced air-flow on the VRMs compared to the "stock" AMD heatsinks, I expect you've probably reduced the motherboards continuous available stable power to ~100W or less.

Don't use the reference clock to overclock at this stage. That should be experimented with for fine tuning later on. When you adjust your reference clock (called "CPU freq"), you are also adjusting RAM/NB/HT bus speeds (many boards don't report the change in speed to these other buses, so you just have to "know" that it is being adjusted, and do the math yourself), any of which could be the source of an instability. OCing with the reference clock without compensating for these changes on those buses, will make it impossible to isolate the source of the instability.
     
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CPUMotherboardGraphicsRAM
FX-8350 990X EVO R2.0 Sparkle GTX460 768MB ballistix tactical 2 x 8GB 
Hard DriveHard DriveOptical DriveCooling
Toshiiba THNSNH 256GB Enterprise RE3 1TB Asus BD combo drive Artic A30 
OSMonitorMonitorMonitor
Manjaro Linux Samsung 21.5" LCD E2009WFP E2009WFP 
PowerCase
Seasonic G 550W Modular Fractal Design Core 3500 
CPUMotherboardGraphicsRAM
FX-6300, 4.7 GHZ@1.43V GA-970A-UD3P GTX 460 768MB Mixed DIMMs. 2x4GB + 2x8GB @ 1600-8-8-8 
Hard DriveHard DriveHard DriveHard Drive
Toshiba THNSNH 19nm 256GB 1TB Spinpoint F3 WD RE3 1TB WD RE3 1TB 
Optical DriveCoolingOSOS
yes CM Seidon 120V SolydK OpenSuse 13.1 
OSOSMonitorMonitor
Linux Mint 9-32 bit // Linux Mint 17-64 bit  Manjaro Xfce Samsung 21.5" HannsG 21.5" sideways! 
KeyboardPowerCaseMouse
Sticky ATNG Rosewill Green 630W NZXT Gamma Basic Microsoft corded 
CPUMotherboardGraphicsRAM
A10-6800k 4.8GHZ @ 1.375V, 1.2GHZ iGPU Gigabyte GA-F2A85XN-WIFI HD8670D Ripjaws 
Hard DriveOptical DriveCoolingOS
Seagate ST1000DM003 Asus BC-12B1ST/BLK/B/AS Zalman CNPS5X Linux Mint 15 
MonitorKeyboardPowerCase
LG IPS224V-PN Logitec K360 FSP 400W Aurum S 80+ gold Prodigy 
Mouse
logitec M235 
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post #4 of 23
Thread Starter 
Thanks for the replays. I've tried a different tact today so here goes. I can get to 4.5Ghz with the following:
CPU freq: 200
Mem clock: 1600
Pcie clock: 100

CPU ratio: 22.5
And turbo: disabled
CPU/NB freq: 2400

CPU over voltage: 1.440625
(Bios and CPU-z show 1.488v?)
Vddnb over voltage: 1.25000
Llc: 22.575%

Ht link speed: 2400
Ht over voltage: auto

Memory over voltage: 1.5000

PCI/PCIe CLK status: enabled

Gart error reporting: disabled
Microcode updation: enabled
Secure virtual machine: disabled
Cool n quiet: disabled
Advance clock calibration: auto
Unleashing mode: disabled
Active CPU cores: auto

APU disabled using amgmsgtweaker every time windows starts.

I ran prime on small ftt for 3 hours fine, ran blend for 3 hours fine.

Problem is if I up the multi from 22.5 to 23 so the cou goes from 4.5 to 4.6 then it fails in prime no matter how much extra voltage I give the CPU. Any ideas?
post #5 of 23
As the guide says, 1.55 volts is the maximum safe voltage.
    
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Microsoft Comfort Curve 2000 Corsair CX600 Custom twin full tower, 12 - 5 1/4 bays total Logitech M510 
Mouse PadAudioAudio
Combo Mouse Pad, Calculator, USB ports USB stereo speakers Custom 5.1 digital sound system 
  hide details  
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CPUMotherboardGraphicsRAM
FX-6300 @ 4.9ghz M5A99X EVO R2.0 PNY 2gb NVIDIA GeForce GTX 650 PNY DDR3-1600 9-9-9-24 2X4gb 
Hard DriveHard DriveHard DriveHard Drive
Intel 330 SSD Samsung HD103SI Samsung HD204UI X 2 esata externals  Western Digital WD5000AAKX  
Optical DriveCoolingOSMonitor
Optiarc DVD RW AD-7280S Cooler Master Hyper 212 plus Windows 8.1.1 pro with media center Funai 32inch LED HDTV 
KeyboardPowerCaseMouse
Microsoft Comfort Curve 2000 Corsair CX600 Custom twin full tower, 12 - 5 1/4 bays total Logitech M510 
Mouse PadAudioAudio
Combo Mouse Pad, Calculator, USB ports USB stereo speakers Custom 5.1 digital sound system 
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post #6 of 23
Thread Starter 
Do you know why if I set the vcore to 1.55v in the bios and reboot back into the bios and the vcore actual is 1.59v?
post #7 of 23
Most likely lack of Load Line Calibration. You would want to set that on high or highest instead of auto.
Edited by cpmee - 3/8/14 at 3:03pm
    
CPUMotherboardGraphicsRAM
FX-6300 @ 4.9ghz M5A99X EVO R2.0 PNY 2gb NVIDIA GeForce GTX 650 PNY DDR3-1600 9-9-9-24 2X4gb 
Hard DriveHard DriveHard DriveHard Drive
Intel 330 SSD Samsung HD103SI Samsung HD204UI X 2 esata externals  Western Digital WD5000AAKX  
Optical DriveCoolingOSMonitor
Optiarc DVD RW AD-7280S Cooler Master Hyper 212 plus Windows 8.1.1 pro with media center Funai 32inch LED HDTV 
KeyboardPowerCaseMouse
Microsoft Comfort Curve 2000 Corsair CX600 Custom twin full tower, 12 - 5 1/4 bays total Logitech M510 
Mouse PadAudioAudio
Combo Mouse Pad, Calculator, USB ports USB stereo speakers Custom 5.1 digital sound system 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
FX-6300 @ 4.9ghz M5A99X EVO R2.0 PNY 2gb NVIDIA GeForce GTX 650 PNY DDR3-1600 9-9-9-24 2X4gb 
Hard DriveHard DriveHard DriveHard Drive
Intel 330 SSD Samsung HD103SI Samsung HD204UI X 2 esata externals  Western Digital WD5000AAKX  
Optical DriveCoolingOSMonitor
Optiarc DVD RW AD-7280S Cooler Master Hyper 212 plus Windows 8.1.1 pro with media center Funai 32inch LED HDTV 
KeyboardPowerCaseMouse
Microsoft Comfort Curve 2000 Corsair CX600 Custom twin full tower, 12 - 5 1/4 bays total Logitech M510 
Mouse PadAudioAudio
Combo Mouse Pad, Calculator, USB ports USB stereo speakers Custom 5.1 digital sound system 
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post #8 of 23
Thread Starter 
With it set to 22% the vcore stays the same all the time, on 100% llc the vcore jumps all over the place.
post #9 of 23
Looks like its overcompensating too much at 100%. The idea is to keep vcore steady, so 22% looks to be a good number for you.
    
CPUMotherboardGraphicsRAM
FX-6300 @ 4.9ghz M5A99X EVO R2.0 PNY 2gb NVIDIA GeForce GTX 650 PNY DDR3-1600 9-9-9-24 2X4gb 
Hard DriveHard DriveHard DriveHard Drive
Intel 330 SSD Samsung HD103SI Samsung HD204UI X 2 esata externals  Western Digital WD5000AAKX  
Optical DriveCoolingOSMonitor
Optiarc DVD RW AD-7280S Cooler Master Hyper 212 plus Windows 8.1.1 pro with media center Funai 32inch LED HDTV 
KeyboardPowerCaseMouse
Microsoft Comfort Curve 2000 Corsair CX600 Custom twin full tower, 12 - 5 1/4 bays total Logitech M510 
Mouse PadAudioAudio
Combo Mouse Pad, Calculator, USB ports USB stereo speakers Custom 5.1 digital sound system 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
FX-6300 @ 4.9ghz M5A99X EVO R2.0 PNY 2gb NVIDIA GeForce GTX 650 PNY DDR3-1600 9-9-9-24 2X4gb 
Hard DriveHard DriveHard DriveHard Drive
Intel 330 SSD Samsung HD103SI Samsung HD204UI X 2 esata externals  Western Digital WD5000AAKX  
Optical DriveCoolingOSMonitor
Optiarc DVD RW AD-7280S Cooler Master Hyper 212 plus Windows 8.1.1 pro with media center Funai 32inch LED HDTV 
KeyboardPowerCaseMouse
Microsoft Comfort Curve 2000 Corsair CX600 Custom twin full tower, 12 - 5 1/4 bays total Logitech M510 
Mouse PadAudioAudio
Combo Mouse Pad, Calculator, USB ports USB stereo speakers Custom 5.1 digital sound system 
  hide details  
Reply
post #10 of 23
Thread Starter 
So I've ran prime for 4 hours fft at 200 x 22.5 with 1.44v vcore and it's stable. If I up the multiplier by .5 to 23 then it fails in prime within seconds even at 1.55v vcore. Any ideas?
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