Gigabyte 990FXA-UD3 Questions

Hardware Hub Overclocking
1

I recently built my own system with a 990FXA-UD3 / 8350 combo coupled with a noctua nh-d14. My PSU is a Coolermaster 750W Bronze+. I have been looking around for information on overclocking and have found several guides for either the 8350 and asus motherboards, such as this one.

http://www.overclock.net/t/1348623/amd-bulldozer-and-piledriver-overclocking-guide-asus-motherboard

I'm a little unsure with the settings that need to be tweaked and how to manage the voltages for the cpu because of the quality difference between the boards.

So far, this is what I have as my edited settings:

Frequency Settings

BLCK Clock Control: set to 200 MHz

CPU Northbridge Frequency: set to 2200 MHz

HT Link Frequency: Set to 2600 MHz

CPU Clock Ratio: Auto

Advanced Frequency Settings

CPU Clock Ratio: Set to 20

Cpu Performance Boost: Disabled

CPU Unlock: Enabled

Cool and Quiet: Disabled

C1E Support: Disabled

SVM: Disabled

CPU Core Control: Automatic

Core C6 State: Disabled

HPC Mode: Enabled

 

Voltage Settings

CPU Vcore: +0.000V

NB Core: +0.000V

DRAM Voltage: Auto

HT Link Voltage : Auto

NB/PCIe/PLL Voltage: Auto

NB Voltage: Auto

Vcore Loadline Calibration: Ultra High (Second Highest)

For the actual OC, I was going to follow these steps:

  1. In the BIOS, set the Recommended Settings. Then Save and Exit. (Do not adjust the CPU Manual Voltage, or CPU Ratio yet.)
  2. Back in the BIOS, scroll to CPU Manual Voltage and Manually Set it to whatever value it shows for your CPU. 
  3. Exit and Save changes, and boot into your Operating System.
  4. Load and run Prime95 Small FFT for 10 Minutes.
  • If no Cores Fail, then increase another point on the CPU Ratio and run Prime95 again.
  • If a Core Fails then increase the CPU Manual Voltage one point and run Prime95 again.
  • If your system Freezes or BSOD, then reduce you CPU Ratio by one point and run Prime95 again.
  • If your system Freezes or BSOD after increasing the CPU Ratio by one point then increase your CPU Manual Voltage by three points and run Prime95 again.


For step 1, when I save the settings mentioned above and reboot, my computer takes a very long time, and seems to power on and off a few times before getting to the bios splash screen. When I enter the bios I get the message:

"Boot Failure detected

The system has experienced a boot failure possibly due to incorrect configuration"

What would be causing this error?

 

Also just for clarification (assuming that the error is trivial), when I would be upping the voltage by 'one point', does that mean the 0.025V increment by hitting the '+' key on Vcore? The reason I ask is because in the last bullet it mentions increasing the voltage by 3 points, which would bring it close to 1.5V.

 Thanks

2

simple turn up clock set voltage to manual offset set what you want for the ratio clock reboot if crash increase voltage done.

3

Just to clarify, I should set CPU Vcore to manual (which will then show +0.000V), then put the ratio at something desirable (like 23-24 to get a 4.6 or 4.8 GHz oc) and increase the voltage by one point (or 0.025V) until I get it to boot?

If I leave the cpu multiplier on auto and put the voltage to +0.000V, it fails to boot telling me that my Current CPU speed is 0 MHz, and the BCLK is 201 MHz. Also, would you happen to know why it my computer seems to go on and off a few times before actually reaching this screen?

4

http://www.overclock.net/t/1140459/bulldozer-overclocking-guide-performance-scaling-charts-max-ocs-ln2-results-coming

Just follow that. It's a great guide. That's what started me off for overclocking my 8350. I have the exact same motherboard as you, by the way. Really like it. Oh, and I can get about 4.7GHZ at 1.4ISH volts... This is the second 990FXA-UD3 I've had, but it's only a rev 1.1, and I have to say, 3.0 was better. This one seems a little trippy.

5

What cooler are you using? That sounds quite promising.

It says to keep it under 1.4V for a 24/7 OC, but isn't the stock voltage at 1.38 already?

So far the guide is working for me, but i'll post if I run in into any more problems.

Thanks for the help!

 

Edit:

So I've found that I can get 4.5GHz by just setting changing the multiplier to 22.5 with the BLCK control at 200MHz and the Vcore at +0.000V (which is 1.384V). The next instruction indicates I should lower the multiplier and increase the BLCK Clock Control and then change the CPU Northbridge frequency and HT Link Frequency. I set the multiplier to 19, the clock control to 240 MHz (which gives a clock speed of 4.56), the Northbridge frequency to 2600 MHz, and the HT Link frequency to 2600 MHz. My confusion lies in how to change my voltages to make these (or other) settings work. I've left my Vcore at +0.000V and the LLC at Ultra high. Is the CPU-NB Voltage referenced in step 5 the same thing as  NB core? If so, how would I monitor the actual value if all I see is the increment (+0.000V) and what are safe values?  Finally, are there any other voltage settings I should be changing to increase stability?

Thanks again!