overclocking AMD FX-8320 on Gigabyte 990fxa-ud3

[I am Crawley]

what voltages do I need for overclocking @ 4.0ghz - 4.4ghz. I am currently @ 4.0ghz and 1.33v is this ok or should I lower / raise my voltages.

by the way right now with my clock @4.0ghz and 1.33v. My pc won't boot for the 1st time. It will boot for 1sec then turn off then turn on automatically. is this an overclocking problem?

full spec:

AMD FX-8320
MB - Gigabyte 990fxa-ud3 (rev.4)
PSU - Seasonic M12II 620w
Cooler - CM Hyper 212x
GPU - 7770

 

[Darkbreeze]

Try bumping it up to 1.35 and see if it will boot. If so, drop down incrementally until it fails to boot again. 1.345, 1.34, etc. You can fine tune even more than that but it's a start to find a stable voltage. If it still won't boot at 1.35 try bumping up slightly until stable and then check temps and stability with whatever stress test you use. You realize every chip is different so what works for one 8320 may not work for another. Make sure that application power management is enabled and that high performance computing mode is disabled in the BIOS. That's really probably not related, just a side note really.

Once you get it stable at 4 if you desire to go higher increase the multiplier by a step and repeat the procedure. You may find at some point that the voltage required to remain stable exceeds the CM 212's ability to keep the cpu below TJmax so if you find thermal limits are going to be a problem then drop back down a step in the process until you get a better cooler. You may not encounter that issue, but you may.

Also, are you adjusting only the multiplier and voltage or are you changing FSB or other values too? For now, I'd leave everything else on auto until you find your sweet spot. Also, you might want to keep the other voltages set to "offset" until you become more familiar with your setup and then you can play with some of the other settings. Manual settings for everything might cause you some issues.

 

[Psykocys]

The off and on cycle happens when you turn off turbo boost

 

[Darkbreeze]

The off and on cycle happens when you turn off turbo boost

No, it doesn't. I've used that same board, and currently am using an ASUS sabertooth board, and have built a pretty substantial number of systems for clients without having ever had that issue after disabling turbo core. That's just not correct.

 

[TheMagicalWallaby]

By the way, check to make sure your VRM's don't overheat as this board has vrm overheating issues.

 

[Psykocys]

The off and on cycle happens when you turn off turbo boost

No, it doesn't. I've used that same board, and currently am using an ASUS sabertooth board, and have built a pretty substantial number of systems for clients without having ever had that issue after disabling turbo core. That's just not correct.

I had the same board on my 8320 build that I gave to my dad leaving all the recommended stuff for overclocking off, I'd turn turbo boost off in the bios and the computer would boot then power down and reboot turn turbo boost back on and wallah it stops cutting off, tell me how that isn't related. Google it search around a couple other forums other have the same issue and most have found it related to the turbo boost feature

 

[Darkbreeze]

Psykocys

I'm not gonna argue with you about it, so, whatever.



Wallaby,

I think that was only in the Rev.3 and back versions of the board. Pretty sure in Rev.4 the heatsinks and VRM components were entirely changed out with upgraded components due to all the complaints about the VRM failures, especially in Rev.3. I wouldn't bet anybody's life on it, but I'm fairly sure that's the case.

990FXA-UD3 Rev. 4 features a host of changes over its UEFI-equipped predecessor, beginning with a refreshed 10-phase CPU VRM (Digital Power Engine), a different selection of chokes, capacitors, and MOSFETs, newer VRM and chipset heatsinks capable of handling higher thermal loads, and Gigabyte's newest UEFI setup program. The board is otherwise identical to the 990FXA-UD3 Rev 3.

 

[coolcole01]

By the way, check to make sure your VRM's don't overheat as this board has vrm overheating issues.

this guy is speaking the truth had the vrm on that board go crazy on me

 

[Darkbreeze]

By the way, check to make sure your VRM's don't overheat as this board has vrm overheating issues.

this guy is speaking the truth had the vrm on that board go crazy on me

Was it a Rev 3 or Rev 4 board?

 

[coolcole01]

rev 1 then rev4 but a small spot cooler made a huge difference spend like 10 bucks for a good one and your golden

 

[Darkbreeze]

I hadn't heard of anybody having the VRM problems on the Rev 4. I think ANY board could benefit from a spot cooler though if it doesn't have a top down (Downdraft) style cooler. Somebody needs to invent a tower cooler than has a few of the bottom fins angled where they direct air over the VRMs for this issue.

 

[TheMagicalWallaby]

Psykocys

I'm not gonna argue with you about it, so, whatever.



Wallaby,

I think that was only in the Rev.3 and back versions of the board. Pretty sure in Rev.4 the heatsinks and VRM components were entirely changed out with upgraded components due to all the complaints about the VRM failures, especially in Rev.3. I wouldn't bet anybody's life on it, but I'm fairly sure that's the case.

990FXA-UD3 Rev. 4 features a host of changes over its UEFI-equipped predecessor, beginning with a refreshed 10-phase CPU VRM (Digital Power Engine), a different selection of chokes, capacitors, and MOSFETs, newer VRM and chipset heatsinks capable of handling higher thermal loads, and Gigabyte's newest UEFI setup program. The board is otherwise identical to the 990FXA-UD3 Rev 3.

I have checked reviews online from people on places such as amazon and apparently the revision 4 still has issues.

 

[Darkbreeze]

At 4 Ghz, most of the 8320 builds I've worked on had to be at around 1.35-1.36 to be stable. Of course every chip is different but I'd try 1.35 and then bump up or down from there until you find the sweet spot. 1.35 might even be it. Keep an eye on your temps though as Wallaby said that board apparently DOES still have overheating issues with the VRMs. I think most of those are likely to have been on systems with bigger overclocks than yours but still, keep an eye. It might also not hurt to get an 80-100mm cooler and rig it as a spot cooler to blow on the VRMs. You can probably google how to do this. Of course, the correct course of action would be to get a suitable motherboard, but in lieu of that using 1.35 might be a good starting point.

 

[con635]

Somebody needs to invent a tower cooler than has a few of the bottom fins angled where they direct air over the VRMs for this issue.

My old arctic freezer 64 had this feature on the bottom fins, so there must exist other coolers the same?

 

[Ero_Sennin]

Hey friends. I am using the AMD FX 8320 and the Gigabyte 990 FXA-UD3. I am running my RAM 8GB DDR3 CL8 4x2GB Dual Channel in 1600MHz that is the max limit they support in 1.65V and i have overclocked the CPU in 4.5GHz by only changed the CPU Voltage in 1.32V. I have disabled the Core Boost, Cool & Quiet, C1, C6, APM and i enabled the HPC. I run for 3 hours the Aida64 and the results are the following:

https://www.dropbox.com/s/lgj4x05g1um8b15/IMG_20151122_210754.jpg?dl=0

I just want to ask how it's possible to increase the NB Frequency. I changed its value to 2400 or 2600 but nothing changing at all in windows. It still stays to 2200 while the HT is in 2600. Does anyone knows?